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40,041 commits

Author SHA1 Message Date
Linus Torvalds
507bd4b66c soc: late changes for 7.1
These are the contents that arrived during the easter vacation and didn't
 make it into the last 7.0 bugfixes or the first set of branches for the
 merge window. Aside from a reset controller bugfix and an update to the
 MAINTAINERS entry, this is all devicetree changes.
 
 The Marvell devicetree updates contain the usual minor updates and bugfixes,
 along with a two larger but trivial patches to drop unused dtsi files,
 the single broadcom fix addresses a build time warning introduced during
 the merge window.
 
 The freescale, amlogic, and apple changes missed the last fixes branch
 for 7.0.
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Merge tag 'soc-late-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull more SoC updates from Arnd Bergmann:
 "These are the contents that arrived during the easter vacation and
  didn't make it into the last 7.0 bugfixes or the first set of branches
  for the merge window. Aside from a reset controller bugfix and an
  update to the MAINTAINERS entry, this is all devicetree changes.

  The Marvell devicetree updates contain the usual minor updates and
  bugfixes, along with a two larger but trivial patches to drop unused
  dtsi files, the single broadcom fix addresses a build time warning
  introduced during the merge window.

  The freescale, amlogic, and apple changes missed the last fixes branch
  for 7.0"

* tag 'soc-late-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
  arm64: dts: meson-gxl-p230: fix ethernet PHY interrupt number
  arm64: dts: amlogic: meson-axg: Add missing cache information to cpu0
  arm64: dts: amlogic: t7: khadas-vim4: fix board model name
  arm64: dts: amlogic: Fix GIC register ranges for Amlogic T7
  arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM
  arm64: dts: amlogic: s6: Drop CPU masks from GICv3 PPI interrupts
  Documentation/process: maintainer-soc: Document purpose of defconfigs
  Documentation/process: maintainer-soc: Trim from trivial ask-DT
  ARM: dts: bcm4709: fix bus range assignment
  arm64: dts: apple: Fix spelling error
  dt-bindings: Update Sasha Finkelstein's email address
  mailmap: Update Sasha Finkelstein's email address
  arm64: dts: marvell: armada-37xx: swap PHYs' order in USB3 controller node
  arm64: dts: marvell: armada-37xx: use 'usb2-phy' in USB3 controller's phy-names
  arm64: dts: imx8mm-tqma8mqml: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mn-tqma8mqnl: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mm-emtop-som: Correct PAD settings for PMIC_nINT
  reset: amlogic: t7: Fix null reset ops
  arm64: dts: imx8mp-data-modul-edm-sbc: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-dhcom-som: Correct PAD settings for PMIC_nINT
  ...
2026-04-23 08:57:24 -07:00
Arnd Bergmann
dd5dc19174 Amlogic DT Fixes for v7.1:
- Fix ethernet PHY interrupt number for P230 reference board
 - Add missing cache information to cpu0 for Amlogic AXG
 - Fix Khadas VIM4 board model name
 - Fix GIC register ranges for Amlogic T7
 - Fix Khadas VIM4 memory layout for 8GB RAM
 - Drop CPU masks from GICv3 PPI interrupts for Amlogic S6
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Merge tag 'amlogic-fixes-v7.1-rc' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/late2

Amlogic DT Fixes for v7.1:
- Fix ethernet PHY interrupt number for P230 reference board
- Add missing cache information to cpu0 for Amlogic AXG
- Fix Khadas VIM4 board model name
- Fix GIC register ranges for Amlogic T7
- Fix Khadas VIM4 memory layout for 8GB RAM
- Drop CPU masks from GICv3 PPI interrupts for Amlogic S6

* tag 'amlogic-fixes-v7.1-rc' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
  arm64: dts: meson-gxl-p230: fix ethernet PHY interrupt number
  arm64: dts: amlogic: meson-axg: Add missing cache information to cpu0
  arm64: dts: amlogic: t7: khadas-vim4: fix board model name
  arm64: dts: amlogic: Fix GIC register ranges for Amlogic T7
  arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM
  arm64: dts: amlogic: s6: Drop CPU masks from GICv3 PPI interrupts

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-04-23 10:02:27 +02:00
Linus Torvalds
2a4c0c11c0 s390 updates for 7.1 merge window
- Add support for CONFIG_PAGE_TABLE_CHECK and enable it in
   debug_defconfig. s390 can only tell user from kernel PTEs via the mm,
   so mm_struct is now passed into pxx_user_accessible_page() callbacks
 
 - Expose the PCI function UID as an arch-specific slot attribute in
   sysfs so a function can be identified by its user-defined id while
   still in standby. Introduces a generic ARCH_PCI_SLOT_GROUPS hook in
   drivers/pci/slot.c
 
 - Refresh s390 PCI documentation to reflect current behavior and cover
   previously undocumented sysfs attributes
 
 - zcrypt device driver cleanup series: consistent field types, clearer
   variable naming, a kernel-doc warning fix, and a comment explaining
   the intentional synchronize_rcu() in pkey_handler_register()
 
 - Provide an s390 arch_raw_cpu_ptr() that avoids the detour via
   get_lowcore() using alternatives, shrinking defconfig by ~27 kB
 
 - Guard identity-base randomization with kaslr_enabled() so nokaslr
   keeps the identity mapping at 0 even with
   CONFIG_RANDOMIZE_IDENTITY_BASE=y
 
 - Build S390_MODULES_SANITY_TEST as a module only by requiring
   KUNIT && m, since built-in would not exercise module loading
 
 - Remove the permanently commented-out HMCDRV_DEV_CLASS create_class()
   code in the hmcdrv driver
 
 - Drop stale ident_map_size extern conflicting with asm/page.h
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Merge tag 's390-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add support for CONFIG_PAGE_TABLE_CHECK and enable it in
   debug_defconfig. s390 can only tell user from kernel PTEs via the mm,
   so mm_struct is now passed into pxx_user_accessible_page() callbacks

 - Expose the PCI function UID as an arch-specific slot attribute in
   sysfs so a function can be identified by its user-defined id while
   still in standby. Introduces a generic ARCH_PCI_SLOT_GROUPS hook in
   drivers/pci/slot.c

 - Refresh s390 PCI documentation to reflect current behavior and cover
   previously undocumented sysfs attributes

 - zcrypt device driver cleanup series: consistent field types, clearer
   variable naming, a kernel-doc warning fix, and a comment explaining
   the intentional synchronize_rcu() in pkey_handler_register()

 - Provide an s390 arch_raw_cpu_ptr() that avoids the detour via
   get_lowcore() using alternatives, shrinking defconfig by ~27 kB

 - Guard identity-base randomization with kaslr_enabled() so nokaslr
   keeps the identity mapping at 0 even with RANDOMIZE_IDENTITY_BASE=y

 - Build S390_MODULES_SANITY_TEST as a module only by requiring KUNIT &&
   m, since built-in would not exercise module loading

 - Remove the permanently commented-out HMCDRV_DEV_CLASS create_class()
   code in the hmcdrv driver

 - Drop stale ident_map_size extern conflicting with asm/page.h

* tag 's390-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/zcrypt: Fix warning about wrong kernel doc comment
  PCI: s390: Expose the UID as an arch specific PCI slot attribute
  docs: s390/pci: Improve and update PCI documentation
  s390/pkey: Add comment about synchronize_rcu() to pkey base
  s390/hmcdrv: Remove commented out code
  s390/zcrypt: Slight rework on the agent_id field
  s390/zcrypt: Explicitly use a card variable in _zcrypt_send_cprb
  s390/zcrypt: Rework MKVP fields and handling
  s390/zcrypt: Make apfs a real unsigned int field
  s390/zcrypt: Rework domain processing within zcrypt device driver
  s390/zcrypt: Move inline function rng_type6cprb_msgx from header to code
  s390/percpu: Provide arch_raw_cpu_ptr()
  s390: Enable page table check for debug_defconfig
  s390/pgtable: Add s390 support for page table check
  s390/pgtable: Use set_pmd_bit() to invalidate PMD entry
  mm/page_table_check: Pass mm_struct to pxx_user_accessible_page()
  s390/boot: Respect kaslr_enabled() for identity randomization
  s390/Kconfig: Make modules sanity test a module-only option
  s390/setup: Drop stale ident_map_size declaration
2026-04-22 11:13:45 -07:00
Jun Yan
174a0ef3b3 arm64: dts: meson-gxl-p230: fix ethernet PHY interrupt number
Correct the interrupt number assigned to the Realtek PHY in the p230

following the same logic as commit 3106507e10 ("ARM64: dts: meson-gxm:
fix q200 interrupt number"),as reported in [PATCH 0/2] Ethernet PHY
interrupt improvements [1].

[1] https://lore.kernel.org/all/20171202214037.17017-1-martin.blumenstingl@googlemail.com/

Fixes: b94d22d94a ("ARM64: dts: meson-gx: add external PHY interrupt on some platforms")
Signed-off-by: Jun Yan <jerrysteve1101@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260330145111.115318-1-jerrysteve1101@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:29 +02:00
Anand Moon
918273be08 arm64: dts: amlogic: meson-axg: Add missing cache information to cpu0
Add missing L1 data and instruction cache parameters to the CPU node 0
for the Cortex-A53 caches on the Meson AXG SoC.

Fixes: 3b6ad2a433 ("arm64: dts: amlogic: Add cache information to the Amlogic AXG SoCS")
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://patch.msgid.link/20260219103548.18392-1-linux.amoon@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:22 +02:00
Nick Xie
28e4a49a28 arm64: dts: amlogic: t7: khadas-vim4: fix board model name
Update the model property to "Khadas VIM4" to match the official
product branding and maintain consistency with other Khadas boards
(e.g., VIM1, VIM2, VIM3) in the kernel tree.

Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260306030756.2421841-1-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:22 +02:00
Ronald Claveau
232eb5dc61 arm64: dts: amlogic: Fix GIC register ranges for Amlogic T7
This patch aims to fix the GIC register ranges for Amlogic T7 SoC family.

- Context
Kernel log shows a warning about GIC
[    0.000000] GIC: GICv2 detected, but range too small and irqchip.gicv2_force_probe not set

Using cat /proc/interrupts command shows GIC as GIC-0

Adding some peripherals sometimes causes hangs on interrupts.

- According to the GIC-400 ARM doc, the memory map is like:
0x1000-0x1FFF Distributor
0x2000-0x3FFF CPU interfaces
0x4000-0x5FFF Virtual interface control block
0x6000-0x7FFF Virtual CPU interfaces

- Identify GIC model from distributor register

Offset | Name | Type | Reset
0x008 | GICD_IIDR | RO | 0x0200143B

kvim4# md.l 0xFFF01008 1
fff01008: 0200143b

- Identify CPU interface from CPU interface register

Offset | Name | Type | Reset
0x00FC | GICC_IIDR | RO | 0x0202143B

kvim4# md.l 0xFFF020FC 1
fff020fc: 0202143b

- Virtual interface control register check

Offset | Name | Type | Reset
0x004 | GICH_VTR | RO | 0x90000003

kvim4# md.l 0xFFF04004 1
fff04004: 90000003

- Virtual CPU interfaces check

Offset | Name | Type | Reset
0x00FC | GICV_IIDR | RO | 0x0202143B

kvim4# md.l 0xFFF060FC 1
fff060fc: 0202143b

- After this patch there is no warning anymore.
GICv2 is correctly identified.

[    0.000000] GIC: Using split EOI/Deactivate mode

Using cat /proc/interrupts command shows GIC as GICv2

Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260305-fix-amlt7-gic-dts-v1-1-5944415c74bf@aliel.fr
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:22 +02:00
Nick Xie
124d5e138a arm64: dts: amlogic: t7: khadas-vim4: fix memory layout for 8GB RAM
The Khadas VIM4 features 8GB of LPDDR4X RAM. The previous memory node
mapped a single incorrect region. This caused the kernel to map MMIO
and secure firmware (ATF/TrustZone) memory holes as standard RAM,
leading to an Asynchronous SError Interrupt during early boot
(paging_init) when the kernel attempted to clear those pages.

Fix this by splitting the 8GB memory layout into three separate
regions to properly avoid the memory holes (e.g., 0xe0000000 -
0xffffffff):
- 3.5GB @ 0x000000000
- 3.5GB @ 0x100000000
- 1.0GB @ 0x200000000

Signed-off-by: Nick Xie <nick@khadas.com>
Suggested-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Link: https://patch.msgid.link/20260319023446.3422695-1-nick@khadas.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:22 +02:00
Geert Uytterhoeven
5ecee47dc9 arm64: dts: amlogic: s6: Drop CPU masks from GICv3 PPI interrupts
Unlike older GIC variants, the GICv3 DT bindings do not support
specifying a CPU mask in PPI interrupt specifiers.  Drop the masks.
While at it, replace the magic number for IRQ_TYPE_LEVEL_HIGH by its
symbolic definition.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/f9c6eddebebcd2e128edd2dbc51706e23589f9e8.1772643434.git.geert+renesas@glider.be
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2026-04-21 15:46:22 +02:00
Linus Torvalds
13f24586a2 arm64 updates for 7.1 (second round):
Core features:
 
  - Add workaround for C1-Pro erratum 4193714 - early CME (SME unit)
    DVMSync acknowledgement. The fix consists of sending IPIs on TLB
    maintenance to those CPUs running in user space with SME enabled
 
  - Include kernel-hwcap.h in list of generated files (missed in a recent
    commit generating the KERNEL_HWCAP_* macros)
 
 CCA:
 
  - Fix RSI_INCOMPLETE error check in arm-cca-guest
 
 MPAM:
 
  - Fix an unmount->remount problem with the CDP emulation, uninitialised
    variable and checker warnings
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull more arm64 updates from Catalin Marinas:
 "The main 'feature' is a workaround for C1-Pro erratum 4193714
  requiring IPIs during TLB maintenance if a process is running in user
  space with SME enabled.

  The hardware acknowledges the DVMSync messages before completing
  in-flight SME accesses, with security implications. The workaround
  makes use of the mm_cpumask() to track the cores that need
  interrupting (arm64 hasn't used this mask before).

  The rest are fixes for MPAM, CCA and generated header that turned up
  during the merging window or shortly before.

  Summary:

  Core features:

   - Add workaround for C1-Pro erratum 4193714 - early CME (SME unit)
     DVMSync acknowledgement. The fix consists of sending IPIs on TLB
     maintenance to those CPUs running in user space with SME enabled

   - Include kernel-hwcap.h in list of generated files (missed in a
     recent commit generating the KERNEL_HWCAP_* macros)

  CCA:

   - Fix RSI_INCOMPLETE error check in arm-cca-guest

  MPAM:

   - Fix an unmount->remount problem with the CDP emulation,
     uninitialised variable and checker warnings"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm_mpam: resctrl: Make resctrl_mon_ctx_waiters static
  arm_mpam: resctrl: Fix the check for no monitor components found
  arm_mpam: resctrl: Fix MBA CDP alloc_capable handling on unmount
  virt: arm-cca-guest: fix error check for RSI_INCOMPLETE
  arm64/hwcap: Include kernel-hwcap.h in list of generated files
  arm64: errata: Work around early CME DVMSync acknowledgement
  arm64: cputype: Add C1-Pro definitions
  arm64: tlb: Pass the corresponding mm to __tlbi_sync_s1ish()
  arm64: tlb: Introduce __tlbi_sync_s1ish_{kernel,batch}() for TLB maintenance
2026-04-20 16:46:22 -07:00
Arnd Bergmann
d21877ac27 Apple SoC fixes for 7.0
Two commits without any functional changes that arrived just before the
 merge window opened:
 - Update Sasha's email address in all dt-bindings, MAINTAINERS and add
   him to mailmap
 - Fix a typo in spi1-nvram.dtsi
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Merge tag 'apple-soc-fixes-7.0' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux into soc/late2

Apple SoC fixes for 7.0

Two commits without any functional changes that arrived just before the
merge window opened:
- Update Sasha's email address in all dt-bindings, MAINTAINERS and add
  him to mailmap
- Fix a typo in spi1-nvram.dtsi

* tag 'apple-soc-fixes-7.0' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux:
  arm64: dts: apple: Fix spelling error
  dt-bindings: Update Sasha Finkelstein's email address
  mailmap: Update Sasha Finkelstein's email address

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-04-20 17:26:46 +02:00
Arnd Bergmann
de65fe9160 mvebu dt64 for 7.1 (part 1)
- Armada 37xx/3720 device tree fixes:
    - Reorder USB PHYs, standardize names, drop undocumented
      properties, fix schema alignment
 
 - Add Marvell 7k COMe board bindings and uDPU ethernet aliases
 
 - Cleanup: drop unused .dtsi files
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Merge tag 'mvebu-dt64-7.1-1' of https://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into soc/late2

mvebu dt64 for 7.1 (part 1)

- Armada 37xx/3720 device tree fixes:
   - Reorder USB PHYs, standardize names, drop undocumented
     properties, fix schema alignment

- Add Marvell 7k COMe board bindings and uDPU ethernet aliases

- Cleanup: drop unused .dtsi files

* tag 'mvebu-dt64-7.1-1' of https://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
  arm64: dts: marvell: armada-37xx: swap PHYs' order in USB3 controller node
  arm64: dts: marvell: armada-37xx: use 'usb2-phy' in USB3 controller's phy-names
  arm64: dts: marvell: armada-37xx: drop 'marvell,usb-misc-reg' from USB host nodes
  arm64: dts: marvell: armada-37xx: drop redundant status property
  arm64: dts: marvell: armada-37xx: align 'phy-names' of EHCI node with DT schema
  dt-bindings: arm64: add Marvell 7k COMe boards
  arm64: dts: marvell: armada-3720: drop 'marvell,xenon-emmc' properties
  arm64: dts: marvell: uDPU: add ethernet aliases
  arm/arm64: dts: marvell: Drop unused .dtsi
  arm64: dts: a7k: use phy handle

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-04-20 17:03:16 +02:00
Arnd Bergmann
7b82df3368 Merge branch 'arm/fixes' into soc/late2
* arm/fixes:
  arm64: dts: imx8mm-tqma8mqml: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mn-tqma8mqnl: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mm-emtop-som: Correct PAD settings for PMIC_nINT
  reset: amlogic: t7: Fix null reset ops
  arm64: dts: imx8mp-data-modul-edm-sbc: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-dhcom-som: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-ultra-mach-sbc: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-sr-som: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-nitrogen-som: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-aristainetos3a-som-v1: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-edm-g: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-icore-mx8mp: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-navqp: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-debix-som-a: Correct PAD settings for PMIC_nINT
  arm64: dts: imx8mp-debix-model-a: Correct PAD settings for PMIC_nINT
  dt-bindings: arm64: add Marvell 7k COMe boards
2026-04-20 17:02:56 +02:00
Catalin Marinas
858fbd7248 Merge branch 'for-next/c1-pro-erratum-4193714' into for-next/core
* for-next/c1-pro-erratum-4193714:
  : Work around C1-Pro erratum 4193714 (CVE-2026-0995)
  arm64: errata: Work around early CME DVMSync acknowledgement
  arm64: cputype: Add C1-Pro definitions
  arm64: tlb: Pass the corresponding mm to __tlbi_sync_s1ish()
  arm64: tlb: Introduce __tlbi_sync_s1ish_{kernel,batch}() for TLB maintenance
2026-04-20 13:12:35 +01:00
Catalin Marinas
818f644ec6 Merge branches 'for-next/misc' and 'for-next/mpam' into for-next/core
* for-next/misc:
  : Miscellaneous cleanups/fixes
  virt: arm-cca-guest: fix error check for RSI_INCOMPLETE
  arm64/hwcap: Include kernel-hwcap.h in list of generated files

* for-next/mpam:
  : Fix an unmount->remount problem with the CDP emulation, uninitialised
  : variable and checker warnings
  arm_mpam: resctrl: Make resctrl_mon_ctx_waiters static
  arm_mpam: resctrl: Fix the check for no monitor components found
  arm_mpam: resctrl: Fix MBA CDP alloc_capable handling on unmount
2026-04-20 13:11:50 +01:00
Linus Torvalds
9055c64567 memblock: updates for 7.0-rc1
* improve debugability of reserve_mem kernel parameter handling with print
   outs in case of a failure and debugfs info showing what was actually
   reserved
 * Make memblock_free_late() and free_reserved_area() use the same core
   logic for freeing the memory to buddy and ensure it takes care of
   updating memblock arrays when ARCH_KEEP_MEMBLOCK is enabled.
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Merge tag 'memblock-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock updates from Mike Rapoport:

 - improve debuggability of reserve_mem kernel parameter handling with
   print outs in case of a failure and debugfs info showing what was
   actually reserved

 - Make memblock_free_late() and free_reserved_area() use the same core
   logic for freeing the memory to buddy and ensure it takes care of
   updating memblock arrays when ARCH_KEEP_MEMBLOCK is enabled.

* tag 'memblock-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  x86/alternative: delay freeing of smp_locks section
  memblock: warn when freeing reserved memory before memory map is initialized
  memblock, treewide: make memblock_free() handle late freeing
  memblock: make free_reserved_area() update memblock if ARCH_KEEP_MEMBLOCK=y
  memblock: extract page freeing from free_reserved_area() into a helper
  memblock: make free_reserved_area() more robust
  mm: move free_reserved_area() to mm/memblock.c
  powerpc: opal-core: pair alloc_pages_exact() with free_pages_exact()
  powerpc: fadump: pair alloc_pages_exact() with free_pages_exact()
  memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name()
  memblock: move reserve_bootmem_range() to memblock.c and make it static
  memblock: Add reserve_mem debugfs info
  memblock: Print out errors on reserve_mem parser
2026-04-18 11:29:14 -07:00
Linus Torvalds
eb0d6d97c2 bpf-fixes
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Alexei Starovoitov:
 "Most of the diff stat comes from Xu Kuohai's fix to emit ENDBR/BTI,
  since all JITs had to be touched to move constant blinding out and
  pass bpf_verifier_env in.

   - Fix use-after-free in arena_vm_close on fork (Alexei Starovoitov)

   - Dissociate struct_ops program with map if map_update fails (Amery
     Hung)

   - Fix out-of-range and off-by-one bugs in arm64 JIT (Daniel Borkmann)

   - Fix precedence bug in convert_bpf_ld_abs alignment check (Daniel
     Borkmann)

   - Fix arg tracking for imprecise/multi-offset in BPF_ST/STX insns
     (Eduard Zingerman)

   - Copy token from main to subprogs to fix missing kallsyms (Eduard
     Zingerman)

   - Prevent double close and leak of btf objects in libbpf (Jiri Olsa)

   - Fix af_unix null-ptr-deref in sockmap (Michal Luczaj)

   - Fix NULL deref in map_kptr_match_type for scalar regs (Mykyta
     Yatsenko)

   - Avoid unnecessary IPIs. Remove redundant bpf_flush_icache() in
     arm64 and riscv JITs (Puranjay Mohan)

   - Fix out of bounds access. Validate node_id in arena_alloc_pages()
     (Puranjay Mohan)

   - Reject BPF-to-BPF calls and callbacks in arm32 JIT (Puranjay Mohan)

   - Refactor all JITs to pass bpf_verifier_env to emit ENDBR/BTI for
     indirect jump targets on x86-64, arm64 JITs (Xu Kuohai)

   - Allow UTF-8 literals in bpf_bprintf_prepare() (Yihan Ding)"

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (32 commits)
  bpf, arm32: Reject BPF-to-BPF calls and callbacks in the JIT
  bpf: Dissociate struct_ops program with map if map_update fails
  bpf: Validate node_id in arena_alloc_pages()
  libbpf: Prevent double close and leak of btf objects
  selftests/bpf: cover UTF-8 trace_printk output
  bpf: allow UTF-8 literals in bpf_bprintf_prepare()
  selftests/bpf: Reject scalar store into kptr slot
  bpf: Fix NULL deref in map_kptr_match_type for scalar regs
  bpf: Fix precedence bug in convert_bpf_ld_abs alignment check
  bpf, arm64: Emit BTI for indirect jump target
  bpf, x86: Emit ENDBR for indirect jump targets
  bpf: Add helper to detect indirect jump targets
  bpf: Pass bpf_verifier_env to JIT
  bpf: Move constants blinding out of arch-specific JITs
  bpf, sockmap: Take state lock for af_unix iter
  bpf, sockmap: Fix af_unix null-ptr-deref in proto update
  selftests/bpf: Extend bpf_iter_unix to attempt deadlocking
  bpf, sockmap: Fix af_unix iter deadlock
  bpf, sockmap: Annotate af_unix sock:: Sk_state data-races
  selftests/bpf: verify kallsyms entries for token-loaded subprograms
  ...
2026-04-17 15:58:22 -07:00
Linus Torvalds
87768582a4 dma-mapping updates for Linux 7.0:
- added support for batched cache sync, what improves performance of
   dma_map/unmap_sg() operations on ARM64 architecture (Barry Song)
 
 - introduced DMA_ATTR_CC_SHARED attribute for explicitly shared memory
   used in confidential computing (Jiri Pirko)
 
 - refactored spaghetti-like code in drivers/of/of_reserved_mem.c and its
   clients (Marek Szyprowski, shared branch with device-tree updates to
   avoid merge conflicts)
 
 - prepared Contiguous Memory Allocator related code for making dma-buf
   drivers modularized (Maxime Ripard)
 
 - added support for benchmarking dma_map_sg() calls to tools/dma utility
   (Qinxin Xia)
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Merge tag 'dma-mapping-7.1-2026-04-16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping updates from Marek Szyprowski:

 - added support for batched cache sync, what improves performance of
   dma_map/unmap_sg() operations on ARM64 architecture (Barry Song)

 - introduced DMA_ATTR_CC_SHARED attribute for explicitly shared memory
   used in confidential computing (Jiri Pirko)

 - refactored spaghetti-like code in drivers/of/of_reserved_mem.c and
   its clients (Marek Szyprowski, shared branch with device-tree updates
   to avoid merge conflicts)

 - prepared Contiguous Memory Allocator related code for making dma-buf
   drivers modularized (Maxime Ripard)

 - added support for benchmarking dma_map_sg() calls to tools/dma
   utility (Qinxin Xia)

* tag 'dma-mapping-7.1-2026-04-16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: (24 commits)
  dma-buf: heaps: system: document system_cc_shared heap
  dma-buf: heaps: system: add system_cc_shared heap for explicitly shared memory
  dma-mapping: introduce DMA_ATTR_CC_SHARED for shared memory
  mm: cma: Export cma_alloc(), cma_release() and cma_get_name()
  dma: contiguous: Export dev_get_cma_area()
  dma: contiguous: Make dma_contiguous_default_area static
  dma: contiguous: Make dev_get_cma_area() a proper function
  dma: contiguous: Turn heap registration logic around
  of: reserved_mem: rework fdt_init_reserved_mem_node()
  of: reserved_mem: clarify fdt_scan_reserved_mem*() functions
  of: reserved_mem: rearrange code a bit
  of: reserved_mem: replace CMA quirks by generic methods
  of: reserved_mem: switch to ops based OF_DECLARE()
  of: reserved_mem: use -ENODEV instead of -ENOENT
  of: reserved_mem: remove fdt node from the structure
  dma-mapping: fix false kernel-doc comment marker
  dma-mapping: Support batch mode for dma_direct_{map,unmap}_sg
  dma-mapping: Separate DMA sync issuing and completion waiting
  arm64: Provide dcache_inval_poc_nosync helper
  arm64: Provide dcache_clean_poc_nosync helper
  ...
2026-04-17 11:12:42 -07:00
Linus Torvalds
01f492e181 Arm:
- Add support for tracing in the standalone EL2 hypervisor code, which
   should help both debugging and performance analysis.  This uses the
   new infrastructure for 'remote' trace buffers that can be exposed
   by non-kernel entities such as firmware, and which came through the
   tracing tree.
 
 - Add support for GICv5 Per Processor Interrupts (PPIs), as the starting
   point for supporting the new GIC architecture in KVM.
 
 - Finally add support for pKVM protected guests, where pages are unmapped
   from the host as they are faulted into the guest and can be shared back
   from the guest using pKVM hypercalls.  Protected guests are created
   using a new machine type identifier.  As the elusive guestmem has not
   yet delivered on its promises, anonymous memory is also supported.
 
   This is only a first step towards full isolation from the host; for
   example, the CPU register state and DMA accesses are not yet isolated.
   Because this does not really yet bring fully what it promises, it is
   hidden behind CONFIG_ARM_PKVM_GUEST + 'kvm-arm.mode=protected', and
   also triggers TAINT_USER when a VM is created.  Caveat emptor.
 
 - Rework the dreaded user_mem_abort() function to make it more
   maintainable, reducing the amount of state being exposed to the
   various helpers and rendering a substantial amount of state immutable.
 
 - Expand the Stage-2 page table dumper to support NV shadow page tables
   on a per-VM basis.
 
 - Tidy up the pKVM PSCI proxy code to be slightly less hard to follow.
 
 - Fix both SPE and TRBE in non-VHE configurations so that they do not
   generate spurious, out of context table walks that ultimately lead
   to very bad HW lockups.
 
 - A small set of patches fixing the Stage-2 MMU freeing in error cases.
 
 - Tighten-up accepted SMC immediate value to be only #0 for host
   SMCCC calls.
 
 - The usual cleanups and other selftest churn.
 
 LoongArch:
 
 - Use CSR_CRMD_PLV for kvm_arch_vcpu_in_kernel().
 
 - Add DMSINTC irqchip in kernel support.
 
 RISC-V:
 
 - Fix steal time shared memory alignment checks
 
 - Fix vector context allocation leak
 
 - Fix array out-of-bounds in pmu_ctr_read() and pmu_fw_ctr_read_hi()
 
 - Fix double-free of sdata in kvm_pmu_clear_snapshot_area()
 
 - Fix integer overflow in kvm_pmu_validate_counter_mask()
 
 - Fix shift-out-of-bounds in make_xfence_request()
 
 - Fix lost write protection on huge pages during dirty logging
 
 - Split huge pages during fault handling for dirty logging
 
 - Skip CSR restore if VCPU is reloaded on the same core
 
 - Implement kvm_arch_has_default_irqchip() for KVM selftests
 
 - Factored-out ISA checks into separate sources
 
 - Added hideleg to struct kvm_vcpu_config
 
 - Factored-out VCPU config into separate sources
 
 - Support configuration of per-VM HGATP mode from KVM user space
 
 s390:
 
 - Support for ESA (31-bit) guests inside nested hypervisors.
 
 - Remove restriction on memslot alignment, which is not needed anymore with
   the new gmap code.
 
 - Fix LPSW/E to update the bear (which of course is the breaking event
   address register).
 
 x86:
 
 - Shut up various UBSAN warnings on reading module parameter before they
   were initialized.
 
 - Don't zero-allocate page tables that are used for splitting hugepages in
   the TDP MMU, as KVM is guaranteed to set all SPTEs in the page table and
   thus write all bytes.
 
 - As an optimization, bail early when trying to unsync 4KiB mappings if the
   target gfn can just be mapped with a 2MiB hugepage.
 
 x86 generic:
 
 - Copy single-chunk MMIO write values into struct kvm_vcpu (more precisely
   struct kvm_mmio_fragment) to fix use-after-free stack bugs where KVM
   would dereference stack pointer after an exit to userspace.
 
 - Clean up and comment the emulated MMIO code to try to make it easier to
   maintain (not necessarily "easy", but "easier").
 
 - Move VMXON+VMXOFF and EFER.SVME toggling out of KVM (not *all* of VMX
   and SVM enabling) as it is needed for trusted I/O.
 
 - Advertise support for AVX512 Bit Matrix Multiply (BMM) instructions
 
 - Immediately fail the build if a required #define is missing in one of
   KVM's headers that is included multiple times.
 
 - Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected
   exception, mostly to prevent syzkaller from abusing the uAPI to
   trigger WARNs, but also because it can help prevent userspace from
   unintentionally crashing the VM.
 
 - Exempt SMM from CPUID faulting on Intel, as per the spec.
 
 - Misc hardening and cleanup changes.
 
 x86 (AMD):
 
 - Fix and optimize IRQ window inhibit handling for AVIC; make it per-vCPU
   so that KVM doesn't prematurely re-enable AVIC if multiple
   vCPUs have to-be-injected IRQs.
 
 - Clean up and optimize the OSVW handling, avoiding a bug in which KVM would
   overwrite state when enabling virtualization on multiple CPUs in parallel.
   This should not be a problem because OSVW should usually be the same for
   all CPUs.
 
 - Drop a WARN in KVM_MEMORY_ENCRYPT_REG_REGION where KVM complains about a
   "too large" size based purely on user input.
 
 - Clean up and harden the pinning code for KVM_MEMORY_ENCRYPT_REG_REGION.
 
 - Disallow synchronizing a VMSA of an already-launched/encrypted vCPU, as
   doing so for an SNP guest will crash the host due to an RMP violation
   page fault.
 
 - Overhaul KVM's APIs for detecting SEV+ guests so that VM-scoped queries
   are required to hold kvm->lock, and enforce it by lockdep.  Fix various
   bugs where sev_guest() was not ensured to be stable for the whole
   duration of a function or ioctl.
 
 - Convert a pile of kvm->lock SEV code to guard().
 
 - Play nicer with userspace that does not enable KVM_CAP_EXCEPTION_PAYLOAD,
   for which KVM needs to set CR2 and DR6 as a response to ioctls such as
   KVM_GET_VCPU_EVENTS (even if the payload would end up in EXITINFO2
   rather than CR2, for example).  Only set CR2 and DR6 when consumption of
   the payload is imminent, but on the other hand force delivery of the
   payload in all paths where userspace retrieves CR2 or DR6.
 
 - Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT instead
   of vmcb02->save.cr2.  The value is out of sync after a save/restore
   or after a #PF is injected into L2.
 
 - Fix a class of nSVM bugs where some fields written by the CPU are not
   synchronized from vmcb02 to cached vmcb12 after VMRUN, and so are not
   up-to-date when saved by KVM_GET_NESTED_STATE.
 
 - Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE and
   KVM_SET_{S}REGS could cause vmcb02 to be incorrectly initialized after
   save+restore.
 
 - Add a variety of missing nSVM consistency checks.
 
 - Fix several bugs where KVM failed to correctly update VMCB fields on
   nested #VMEXIT.
 
 - Fix several bugs where KVM failed to correctly synthesize #UD or #GP for
   SVM-related instructions.
 
 - Add support for save+restore of virtualized LBRs (on SVM).
 
 - Refactor various helpers and macros to improve clarity and (hopefully)
   make the code easier to maintain.
 
 - Aggressively sanitize fields when copying from vmcb12, to guard against
   unintentionally allowing L1 to utilize yet-to-be-defined features.
 
 - Fix several bugs where KVM botched rAX legality checks when emulating SVM
   instructions.  There are remaining issues in that KVM doesn't handle size
   prefix overrides for 64-bit guests.
 
 - Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails instead of
   somewhat arbitrarily synthesizing #GP (i.e. don't double down on AMD's
   architectural but sketchy behavior of generating #GP for "unsupported"
   addresses).
 
 - Cache all used vmcb12 fields to further harden against TOCTOU bugs.
 
 x86 (Intel):
 
 - Drop obsolete branch hint prefixes from the VMX instruction macros.
 
 - Use ASM_INPUT_RM() in __vmcs_writel() to coerce clang into using a
   register input when appropriate.
 
 - Code cleanups.
 
 guest_memfd:
 
 - Don't mark guest_memfd folios as accessed, as guest_memfd doesn't support
   reclaim, the memory is unevictable, and there is no storage to write
   back to.
 
 LoongArch selftests:
 
 - Add KVM PMU test cases
 
 s390 selftests:
 
 - Enable more memory selftests.
 
 x86 selftests:
 
 - Add support for Hygon CPUs in KVM selftests.
 
 - Fix a bug in the MSR test where it would get false failures on AMD/Hygon
   CPUs with exactly one of RDPID or RDTSCP.
 
 - Add an MADV_COLLAPSE testcase for guest_memfd as a regression test for a
   bug where the kernel would attempt to collapse guest_memfd folios against
   KVM's will.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "Arm:

   - Add support for tracing in the standalone EL2 hypervisor code,
     which should help both debugging and performance analysis. This
     uses the new infrastructure for 'remote' trace buffers that can be
     exposed by non-kernel entities such as firmware, and which came
     through the tracing tree

   - Add support for GICv5 Per Processor Interrupts (PPIs), as the
     starting point for supporting the new GIC architecture in KVM

   - Finally add support for pKVM protected guests, where pages are
     unmapped from the host as they are faulted into the guest and can
     be shared back from the guest using pKVM hypercalls. Protected
     guests are created using a new machine type identifier. As the
     elusive guestmem has not yet delivered on its promises, anonymous
     memory is also supported

     This is only a first step towards full isolation from the host; for
     example, the CPU register state and DMA accesses are not yet
     isolated. Because this does not really yet bring fully what it
     promises, it is hidden behind CONFIG_ARM_PKVM_GUEST +
     'kvm-arm.mode=protected', and also triggers TAINT_USER when a VM is
     created. Caveat emptor

   - Rework the dreaded user_mem_abort() function to make it more
     maintainable, reducing the amount of state being exposed to the
     various helpers and rendering a substantial amount of state
     immutable

   - Expand the Stage-2 page table dumper to support NV shadow page
     tables on a per-VM basis

   - Tidy up the pKVM PSCI proxy code to be slightly less hard to
     follow

   - Fix both SPE and TRBE in non-VHE configurations so that they do not
     generate spurious, out of context table walks that ultimately lead
     to very bad HW lockups

   - A small set of patches fixing the Stage-2 MMU freeing in error
     cases

   - Tighten-up accepted SMC immediate value to be only #0 for host
     SMCCC calls

   - The usual cleanups and other selftest churn

  LoongArch:

   - Use CSR_CRMD_PLV for kvm_arch_vcpu_in_kernel()

   - Add DMSINTC irqchip in kernel support

  RISC-V:

   - Fix steal time shared memory alignment checks

   - Fix vector context allocation leak

   - Fix array out-of-bounds in pmu_ctr_read() and pmu_fw_ctr_read_hi()

   - Fix double-free of sdata in kvm_pmu_clear_snapshot_area()

   - Fix integer overflow in kvm_pmu_validate_counter_mask()

   - Fix shift-out-of-bounds in make_xfence_request()

   - Fix lost write protection on huge pages during dirty logging

   - Split huge pages during fault handling for dirty logging

   - Skip CSR restore if VCPU is reloaded on the same core

   - Implement kvm_arch_has_default_irqchip() for KVM selftests

   - Factored-out ISA checks into separate sources

   - Added hideleg to struct kvm_vcpu_config

   - Factored-out VCPU config into separate sources

   - Support configuration of per-VM HGATP mode from KVM user space

  s390:

   - Support for ESA (31-bit) guests inside nested hypervisors

   - Remove restriction on memslot alignment, which is not needed
     anymore with the new gmap code

   - Fix LPSW/E to update the bear (which of course is the breaking
     event address register)

  x86:

   - Shut up various UBSAN warnings on reading module parameter before
     they were initialized

   - Don't zero-allocate page tables that are used for splitting
     hugepages in the TDP MMU, as KVM is guaranteed to set all SPTEs in
     the page table and thus write all bytes

   - As an optimization, bail early when trying to unsync 4KiB mappings
     if the target gfn can just be mapped with a 2MiB hugepage

  x86 generic:

   - Copy single-chunk MMIO write values into struct kvm_vcpu (more
     precisely struct kvm_mmio_fragment) to fix use-after-free stack
     bugs where KVM would dereference stack pointer after an exit to
     userspace

   - Clean up and comment the emulated MMIO code to try to make it
     easier to maintain (not necessarily "easy", but "easier")

   - Move VMXON+VMXOFF and EFER.SVME toggling out of KVM (not *all* of
     VMX and SVM enabling) as it is needed for trusted I/O

   - Advertise support for AVX512 Bit Matrix Multiply (BMM) instructions

   - Immediately fail the build if a required #define is missing in one
     of KVM's headers that is included multiple times

   - Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected
     exception, mostly to prevent syzkaller from abusing the uAPI to
     trigger WARNs, but also because it can help prevent userspace from
     unintentionally crashing the VM

   - Exempt SMM from CPUID faulting on Intel, as per the spec

   - Misc hardening and cleanup changes

  x86 (AMD):

   - Fix and optimize IRQ window inhibit handling for AVIC; make it
     per-vCPU so that KVM doesn't prematurely re-enable AVIC if multiple
     vCPUs have to-be-injected IRQs

   - Clean up and optimize the OSVW handling, avoiding a bug in which
     KVM would overwrite state when enabling virtualization on multiple
     CPUs in parallel. This should not be a problem because OSVW should
     usually be the same for all CPUs

   - Drop a WARN in KVM_MEMORY_ENCRYPT_REG_REGION where KVM complains
     about a "too large" size based purely on user input

   - Clean up and harden the pinning code for KVM_MEMORY_ENCRYPT_REG_REGION

   - Disallow synchronizing a VMSA of an already-launched/encrypted
     vCPU, as doing so for an SNP guest will crash the host due to an
     RMP violation page fault

   - Overhaul KVM's APIs for detecting SEV+ guests so that VM-scoped
     queries are required to hold kvm->lock, and enforce it by lockdep.
     Fix various bugs where sev_guest() was not ensured to be stable for
     the whole duration of a function or ioctl

   - Convert a pile of kvm->lock SEV code to guard()

   - Play nicer with userspace that does not enable
     KVM_CAP_EXCEPTION_PAYLOAD, for which KVM needs to set CR2 and DR6
     as a response to ioctls such as KVM_GET_VCPU_EVENTS (even if the
     payload would end up in EXITINFO2 rather than CR2, for example).
     Only set CR2 and DR6 when consumption of the payload is imminent,
     but on the other hand force delivery of the payload in all paths
     where userspace retrieves CR2 or DR6

   - Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT
     instead of vmcb02->save.cr2. The value is out of sync after a
     save/restore or after a #PF is injected into L2

   - Fix a class of nSVM bugs where some fields written by the CPU are
     not synchronized from vmcb02 to cached vmcb12 after VMRUN, and so
     are not up-to-date when saved by KVM_GET_NESTED_STATE

   - Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE
     and KVM_SET_{S}REGS could cause vmcb02 to be incorrectly
     initialized after save+restore

   - Add a variety of missing nSVM consistency checks

   - Fix several bugs where KVM failed to correctly update VMCB fields
     on nested #VMEXIT

   - Fix several bugs where KVM failed to correctly synthesize #UD or
     #GP for SVM-related instructions

   - Add support for save+restore of virtualized LBRs (on SVM)

   - Refactor various helpers and macros to improve clarity and
     (hopefully) make the code easier to maintain

   - Aggressively sanitize fields when copying from vmcb12, to guard
     against unintentionally allowing L1 to utilize yet-to-be-defined
     features

   - Fix several bugs where KVM botched rAX legality checks when
     emulating SVM instructions. There are remaining issues in that KVM
     doesn't handle size prefix overrides for 64-bit guests

   - Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails
     instead of somewhat arbitrarily synthesizing #GP (i.e. don't double
     down on AMD's architectural but sketchy behavior of generating #GP
     for "unsupported" addresses)

   - Cache all used vmcb12 fields to further harden against TOCTOU bugs

  x86 (Intel):

   - Drop obsolete branch hint prefixes from the VMX instruction macros

   - Use ASM_INPUT_RM() in __vmcs_writel() to coerce clang into using a
     register input when appropriate

   - Code cleanups

  guest_memfd:

   - Don't mark guest_memfd folios as accessed, as guest_memfd doesn't
     support reclaim, the memory is unevictable, and there is no storage
     to write back to

  LoongArch selftests:

   - Add KVM PMU test cases

  s390 selftests:

   - Enable more memory selftests

  x86 selftests:

   - Add support for Hygon CPUs in KVM selftests

   - Fix a bug in the MSR test where it would get false failures on
     AMD/Hygon CPUs with exactly one of RDPID or RDTSCP

   - Add an MADV_COLLAPSE testcase for guest_memfd as a regression test
     for a bug where the kernel would attempt to collapse guest_memfd
     folios against KVM's will"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (373 commits)
  KVM: x86: use inlines instead of macros for is_sev_*guest
  x86/virt: Treat SVM as unsupported when running as an SEV+ guest
  KVM: SEV: Goto an existing error label if charging misc_cg for an ASID fails
  KVM: SVM: Move lock-protected allocation of SEV ASID into a separate helper
  KVM: SEV: use mutex guard in snp_handle_guest_req()
  KVM: SEV: use mutex guard in sev_mem_enc_unregister_region()
  KVM: SEV: use mutex guard in sev_mem_enc_ioctl()
  KVM: SEV: use mutex guard in snp_launch_update()
  KVM: SEV: Assert that kvm->lock is held when querying SEV+ support
  KVM: SEV: Document that checking for SEV+ guests when reclaiming memory is "safe"
  KVM: SEV: Hide "struct kvm_sev_info" behind CONFIG_KVM_AMD_SEV=y
  KVM: SEV: WARN on unhandled VM type when initializing VM
  KVM: LoongArch: selftests: Add PMU overflow interrupt test
  KVM: LoongArch: selftests: Add basic PMU event counting test
  KVM: LoongArch: selftests: Add cpucfg read/write helpers
  LoongArch: KVM: Add DMSINTC inject msi to vCPU
  LoongArch: KVM: Add DMSINTC device support
  LoongArch: KVM: Make vcpu_is_preempted() as a macro rather than function
  LoongArch: KVM: Move host CSR_GSTAT save and restore in context switch
  LoongArch: KVM: Move host CSR_EENTRY save and restore in context switch
  ...
2026-04-17 07:18:03 -07:00
Linus Torvalds
8242c709d4 soc: ARM code changes for 7.1
These are again very minimal updates:
 
  - A workaround for firmware on Google Nexus 10
  - A fix for early debugging on OMAP1
  - A rework for Microchip SoC configuration
  - Cleanups on OMAP2 an R-Car-Gen2
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Merge tag 'soc-arm-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC ARM code updates from Arnd Bergmann:
 "These are again very minimal updates:

   - A workaround for firmware on Google Nexus 10

   - A fix for early debugging on OMAP1

   - A rework for Microchip SoC configuration

   - Cleanups on OMAP2 an R-Car-Gen2"

* tag 'soc-arm-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: omap2: dead code cleanup in kconfig for ARCH_OMAP4
  ARM: OMAP1: Fix DEBUG_LL and earlyprintk on OMAP16XX
  arm64: Kconfig: provide a top-level switch for Microchip platforms
  ARM: shmobile: rcar-gen2: Use of_phandle_args_equal() helper
  ARM: omap: fix all kernel-doc warnings
  ARM: omap2: Replace scnprintf with strscpy in omap3_cpuinfo
  ARM: samsung: exynos5250: Allow CPU1 to boot
2026-04-16 20:45:14 -07:00
Linus Torvalds
231d703058 soc: defconfig updates for 7.1
As usual, we enable a number of additional device drivers as loadable
 modules, to support the added platforms. The largest change this time
 is for OMAP2/3, which were not that well supported in the generic arm32
 defconfig.
 
 The Tegra SoC platforms are now enabled by default in Kconfig when
 ARCH_TEGRA is enabled, which means the defconfig change is done at
 the same time as the Kconfig change here.
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Merge tag 'soc-defconfig-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC defconfig updates from Arnd Bergmann:
 "As usual, we enable a number of additional device drivers as loadable
  modules, to support the added platforms. The largest change this time
  is for OMAP2/3, which were not that well supported in the generic
  arm32 defconfig.

  The Tegra SoC platforms are now enabled by default in Kconfig when
  ARCH_TEGRA is enabled, which means the defconfig change is done at the
  same time as the Kconfig change here"

* tag 'soc-defconfig-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
  arch/arm: Drop CONFIG_FIRMWARE_EDID from defconfig files
  arm64: defconfig: Enable DP83TG720 PHY driver
  arm64: tegra: defconfig: Drop redundant ARCH_TEGRA_foo_SOC
  ARM: tegra: defconfig: Drop redundant ARCH_TEGRA_foo_SOC
  arm64: defconfig: enable pci-pwrctrl-generic as module
  arm64: defconfig: Enable Lontium LT8713sx driver
  arm64: defconfig: Enable Qualcomm Eliza SoC display clock controller
  arm64: defconfig: enable IPQ5210 RDP504 base configs
  arm64: defconfig: Enable Milos LPASS LPI pinctrl driver
  arm64: defconfig: Enable Kaanapali clock controllers
  arm64: defconfig: Enable configs for Arduino VENTUNO Q
  arm64: defconfig: Enable Qualcomm Eliza basic resource providers
  arm64: defconfig: Enable S5KJN1 camera sensor
  arm64: defconfig: Enable configurations for Toradex Aquila AM69
  arm64: defconfig: remove SENSORS_SA67MCU
  arm64: defconfig: Enable Qualcomm WCD937x headphone codec as module
  arm64: defconfig: Enable QCOMTEE module for QTEE-enabled Qualcomm SoCs
  ARM: shmobile: defconfig: Refresh for v7.0-rc1
  arm: multi_v7_defconfig: Enable more OMAP 3/4 related configs
  ARM: multi_v7_defconfig: omap2plus_defconfig: Enable ITE IT66121 driver
  ...
2026-04-16 20:40:20 -07:00
Linus Torvalds
e65f4718a5 soc: dt changes for 7.1
A number of SoC platforms are adding modernized variants of their
 already supported chips time, with a total of 12 new SoCs,
 and two older SoC getting removed:
 
  - Qualcomm Glymur is a compute SoC using 18 Oryon-2 CPU cores
  - Qualcomm Mahua is a variant of Glymur with only 12 CPU cores, but
    largely identical.
  - Qualcomm Eliza is an embeded platform for mobile phone (SM7750) and IOT
    (QC7790S/M) workloads
  - Qualcomm IPQ5210 is a wireless networking SoC using Cortex-A53 cores
  - Qualcomm apq8084 and ipq806x had only rudimentary support but no
    actual products using them, so they are now gone.
  - Axis ARTPEC-9 is a follow-up to the ARTPEC-8 embedded SoC, using
    the Samsung SoC platform but now with Cortex-A55 cores
  - ARM Zena is a virtual platform in FVP using Cortex-A720AE cores, with
    additional versions planned to be merged in the future.
  - ARM corstone-1000-a320 is a reference platform for IOT, using low-end
    Cortex-A320 cores
  - Microchip LAN9691 is an updated 64-bit variant of the arm32 lan966x
    series of networking SoCs
  - Microchip PIC64GX is an embedded RISC-V chip using SIFIVE U54 CPU cores
  - Rockchip RV1103B is the low-end 32-bit single-core vision processor
  - Renesas RZ/G3L (r9a08g046) is an industrial embedded chip using
    Cortex-A55 cores, similar to the G3E and G3S variants we already
    supported.
  - NXP S32N79 is an automotive SoC using Cortex-A78AE cores, a
    significant upgrade from the older S32V and S32G series
 
 These all come with at least one reference board or an initial product
 using these, in total there are 67 newly added boards. The ones for
 already supported SoCs are:
 
  - Two more Aspeed BMC based boards
  - Three older tablets based on 32-bit OMAP4 and Exynos5 SoCs
  - One Set-top-box based on Allwinner H6
  - 22 additional industrial/embedded boards using 64-bit NXP i.MX8M
    or i.MX9 SoCs
  - 20 Qualcomm SoC based machines across all possible markets:
    workstation, gaming, laptop, phone, networking, reference, ...
  - Three more Rockchips rk35xx based boards
  - Four variants of the Toradex Verdin using TI AM62
 
 Other notable bits are:
 
  - A cleanup for the 32-bit Tegra paz00 board moved the last
    board specific code on Tegra into equivalent dts syntax.
  - There continues to be a significant number of fixes for static
    checking of dtc syntax, but it feels like this is slowing down,
    hopefully getting into a state where most known issues are
    addressed
  - Additional hardware support for many existing boards across SoC
    families, notably Qualcomm, Broadcom, i.MX2, i.MX6, Rockchips,
    STM32, Mediatek, Tegra, TI and Microchip
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Merge tag 'soc-dt-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC devicetree updates from Arnd Bergmann:
 "A number of SoC platforms are adding modernized variants of their
  already supported chips time, with a total of 12 new SoCs, and two
  older SoC getting removed:

   - Qualcomm Glymur is a compute SoC using 18 Oryon-2 CPU cores
   - Qualcomm Mahua is a variant of Glymur with only 12 CPU cores, but
     largely identical.
   - Qualcomm Eliza is an embeded platform for mobile phone (SM7750) and
     IOT (QC7790S/M) workloads
   - Qualcomm IPQ5210 is a wireless networking SoC using Cortex-A53
     cores
   - Qualcomm apq8084 and ipq806x had only rudimentary support but no
     actual products using them, so they are now gone.
   - Axis ARTPEC-9 is a follow-up to the ARTPEC-8 embedded SoC, using
     the Samsung SoC platform but now with Cortex-A55 cores
   - ARM Zena is a virtual platform in FVP using Cortex-A720AE cores,
     with additional versions planned to be merged in the future.
   - ARM corstone-1000-a320 is a reference platform for IOT, using
     low-end Cortex-A320 cores
   - Microchip LAN9691 is an updated 64-bit variant of the arm32 lan966x
     series of networking SoCs
   - Microchip PIC64GX is an embedded RISC-V chip using SIFIVE U54 CPU
     cores
   - Rockchip RV1103B is the low-end 32-bit single-core vision processor
   - Renesas RZ/G3L (r9a08g046) is an industrial embedded chip using
     Cortex-A55 cores, similar to the G3E and G3S variants we already
     supported.
   - NXP S32N79 is an automotive SoC using Cortex-A78AE cores, a
     significant upgrade from the older S32V and S32G series

  These all come with at least one reference board or an initial product
  using these, in total there are 67 newly added boards. The ones for
  already supported SoCs are:

   - Two more Aspeed BMC based boards
   - Three older tablets based on 32-bit OMAP4 and Exynos5 SoCs
   - One Set-top-box based on Allwinner H6
   - 22 additional industrial/embedded boards using 64-bit NXP i.MX8M or
     i.MX9 SoCs
   - 20 Qualcomm SoC based machines across all possible markets:
     workstation, gaming, laptop, phone, networking, reference, ...
   - Three more Rockchips rk35xx based boards
   - Four variants of the Toradex Verdin using TI AM62

  Other notable bits are:

   - A cleanup for the 32-bit Tegra paz00 board moved the last board
     specific code on Tegra into equivalent dts syntax.
   - There continues to be a significant number of fixes for static
     checking of dtc syntax, but it feels like this is slowing down,
     hopefully getting into a state where most known issues are
     addressed
   - Additional hardware support for many existing boards across SoC
     families, notably Qualcomm, Broadcom, i.MX2, i.MX6, Rockchips,
     STM32, Mediatek, Tegra, TI and Microchip"

* tag 'soc-dt-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (841 commits)
  arm64: dts: ti: k3: Use memory-region-names for r5f
  ARM: dts: imx: Add DT overlays for DH i.MX6 DHCOM SoM and boards
  ARM: dts: imx6sx: remove fallback compatible string fsl,imx28-lcdif
  ARM: dts: imx25: rename node name tcq to touchscreen
  ARM: dts: imx: b850v3: Disable unused usdhc4
  ARM: dts: imx: b850v3: Define GPIO line names
  ARM: dts: imx: b850v3: Use alphabetical sorting
  ARM: dts: imx: bx50v3: Configure phy-mode to eliminate a warning
  ARM: dts: imx: bx50v3: Configure switch PHY max-speed to 100Mbps
  ARM: dts: imx7ulp: Add CPU clock and OPP table support
  ARM: dts: imx7-mba7: Deassert BOOT_EN after boot
  ARM: dts: tqma7: add boot phase properties
  ARM: dts: imx7s: add boot phase properties
  ARM: dts: tqma6ul[l]: correct spelling of TQ-Systems
  ARM: dts: mba6ulx: add boot phase properties
  ARM: dts: imx6ul[l]-tqma6ul[l]: add boot phase properties
  ARM: dts: imx6ul/imx6ull: add boot phase properties
  ARM: dts: imx6qdl-mba6: add boot phase properties
  ARM: dts: imx6qdl-tqma6: add boot phase properties
  ARM: dts: imx6qdl: add boot phase properties
  ...
2026-04-16 20:28:48 -07:00
Linus Torvalds
440d6635b2 mm.git review status for linus..mm-nonmm-stable
Total patches:       126
 Reviews/patch:       0.92
 Reviewed rate:       76%
 
 - The 2 patch series "pid: make sub-init creation retryable" from Oleg
   Nesterov increases the robustness of our creation of init in a new
   namespace.  By clearing away some historical cruft which is no longer
   needed.  Also some documentation fixups are provided.
 
 - The 2 patch series "selftests/fchmodat2: Error handling and general"
   from Mark Brown has a fixup and a cleanup for the fchmodat2() syscall
   selftest.
 
 - The 3 patch series "lib: polynomial: Move to math/ and clean up" from
   Andy Shevchenko does as advertised.
 
 - The 3 patch series "hung_task: Provide runtime reset interface for
   hung task detector" from Aaron Tomlin gives administrators the ability
   to zero out /proc/sys/kernel/hung_task_detect_count.
 
 - The 2 patch series "tools/getdelays: use the static UAPI headers from
   tools/include/uapi" from Thomas Weißschuh teaches getdelays to use the
   in-kernel UAPI headers rather than the system-provided ones.
 
 - The 5 patch series "watchdog/hardlockup: Improvements to hardlockup"
   from Mayank Rungta provides several cleanups and fixups to the
   hardlockup detector code and its documentation.
 
 - The 2 patch series "lib/bch: fix undefined behavior from signed
   left-shifts" from Josh Law provides a couple of small/theoretical fixes
   in the bch code.
 
 - The 2 patch series "ocfs2/dlm: fix two bugs in dlm_match_regions()"
   from Junrui Luo does what is claims.
 
 - The 27 patch series "cleanup the RAID5 XOR library" from Christoph
   Hellwig is a quite far-reaching cleanup to this code.  I can't do better
   than to quote Christoph:
 
     The XOR library used for the RAID5 parity is a bit of a mess right
     now.  The main file sits in crypto/ despite not being cryptography and
     not using the crypto API, with the generic implementations sitting in
     include/asm-generic and the arch implementations sitting in an asm/
     header in theory.  The latter doesn't work for many cases, so
     architectures often build the code directly into the core kernel, or
     create another module for the architecture code.
 
     Change this to a single module in lib/ that also contains the
     architecture optimizations, similar to the library work Eric Biggers
     has done for the CRC and crypto libraries later.  After that it
     changes to better calling conventions that allow for smarter
     architecture implementations (although none is contained here yet),
     and uses static_call to avoid indirection function call overhead.
 
 - The 2 patch series "lib/list_sort: Clean up list_sort() scheduling
   workarounds" from Kuan-Wei Chiu cleans up this library code by removing
   a hacky thing which was added for UBIFS, which UBIFS doesn't actually
   need.
 
 - The 5 patch series "Fix bugs in extract_iter_to_sg()" from Christian
   Ehrhardt fixes a few bugs in the scatterlist code, adds in-kernel tests
   for the now-fixed bugs and fixes a leak in the test itself.
 
 - The 3 patch series "kdump: Enable LUKS-encrypted dump target support
   in ARM64 and PowerPC" from Coiby Xu eenables support of the
   LUKS-encrypted device dump target on arm64 and powerpc.
 
 - The 4 patch series "ocfs2: consolidate extent list validation into
   block read callbacks" from Joseph Qi addresses ocfs2's validation of
   extent list fields - cleanup, simplification, robustness.  (Kernel test
   robot loves mounting corrupted fs images!)
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Merge tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "pid: make sub-init creation retryable" (Oleg Nesterov)

   Make creation of init in a new namespace more robust by clearing away
   some historical cruft which is no longer needed. Also some
   documentation fixups

 - "selftests/fchmodat2: Error handling and general" (Mark Brown)

   Fix and a cleanup for the fchmodat2() syscall selftest

 - "lib: polynomial: Move to math/ and clean up" (Andy Shevchenko)

 - "hung_task: Provide runtime reset interface for hung task detector"
   (Aaron Tomlin)

   Give administrators the ability to zero out
   /proc/sys/kernel/hung_task_detect_count

 - "tools/getdelays: use the static UAPI headers from
   tools/include/uapi" (Thomas Weißschuh)

   Teach getdelays to use the in-kernel UAPI headers rather than the
   system-provided ones

 - "watchdog/hardlockup: Improvements to hardlockup" (Mayank Rungta)

   Several cleanups and fixups to the hardlockup detector code and its
   documentation

 - "lib/bch: fix undefined behavior from signed left-shifts" (Josh Law)

   A couple of small/theoretical fixes in the bch code

 - "ocfs2/dlm: fix two bugs in dlm_match_regions()" (Junrui Luo)

 - "cleanup the RAID5 XOR library" (Christoph Hellwig)

   A quite far-reaching cleanup to this code. I can't do better than to
   quote Christoph:

     "The XOR library used for the RAID5 parity is a bit of a mess right
      now. The main file sits in crypto/ despite not being cryptography
      and not using the crypto API, with the generic implementations
      sitting in include/asm-generic and the arch implementations
      sitting in an asm/ header in theory. The latter doesn't work for
      many cases, so architectures often build the code directly into
      the core kernel, or create another module for the architecture
      code.

      Change this to a single module in lib/ that also contains the
      architecture optimizations, similar to the library work Eric
      Biggers has done for the CRC and crypto libraries later. After
      that it changes to better calling conventions that allow for
      smarter architecture implementations (although none is contained
      here yet), and uses static_call to avoid indirection function call
      overhead"

 - "lib/list_sort: Clean up list_sort() scheduling workarounds"
   (Kuan-Wei Chiu)

   Clean up this library code by removing a hacky thing which was added
   for UBIFS, which UBIFS doesn't actually need

 - "Fix bugs in extract_iter_to_sg()" (Christian Ehrhardt)

   Fix a few bugs in the scatterlist code, add in-kernel tests for the
   now-fixed bugs and fix a leak in the test itself

 - "kdump: Enable LUKS-encrypted dump target support in ARM64 and
   PowerPC" (Coiby Xu)

   Enable support of the LUKS-encrypted device dump target on arm64 and
   powerpc

 - "ocfs2: consolidate extent list validation into block read callbacks"
   (Joseph Qi)

   Cleanup, simplify, and make more robust ocfs2's validation of extent
   list fields (Kernel test robot loves mounting corrupted fs images!)

* tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (127 commits)
  ocfs2: validate group add input before caching
  ocfs2: validate bg_bits during freefrag scan
  ocfs2: fix listxattr handling when the buffer is full
  doc: watchdog: fix typos etc
  update Sean's email address
  ocfs2: use get_random_u32() where appropriate
  ocfs2: split transactions in dio completion to avoid credit exhaustion
  ocfs2: remove redundant l_next_free_rec check in __ocfs2_find_path()
  ocfs2: validate extent block list fields during block read
  ocfs2: remove empty extent list check in ocfs2_dx_dir_lookup_rec()
  ocfs2: validate dx_root extent list fields during block read
  ocfs2: fix use-after-free in ocfs2_fault() when VM_FAULT_RETRY
  ocfs2: handle invalid dinode in ocfs2_group_extend
  .get_maintainer.ignore: add Askar
  ocfs2: validate bg_list extent bounds in discontig groups
  checkpatch: exclude forward declarations of const structs
  tools/accounting: handle truncated taskstats netlink messages
  taskstats: set version in TGID exit notifications
  ocfs2/heartbeat: fix slot mapping rollback leaks on error paths
  arm64,ppc64le/kdump: pass dm-crypt keys to kdump kernel
  ...
2026-04-16 20:11:56 -07:00
Xu Kuohai
f6606a44bc bpf, arm64: Emit BTI for indirect jump target
On CPUs that support BTI, the indirect jump selftest triggers a kernel
panic because there is no BTI instructions at the indirect jump targets.

Fix it by emitting a BTI instruction for each indirect jump target.

For reference, below is a sample panic log.

Internal error: Oops - BTI: 0000000036000003 [#1]  SMP
...
Call trace:
 bpf_prog_2e5f1c71c13ac3e0_big_jump_table+0x54/0xf8 (P)
 bpf_prog_run_pin_on_cpu+0x140/0x468
 bpf_prog_test_run_syscall+0x280/0x3b8
 bpf_prog_test_run+0x22c/0x2c0

Fixes: f4a66cf1cb ("bpf: arm64: Add support for indirect jumps")
Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> # v12
Acked-by: Leon Hwang <leon.hwang@linux.dev>
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-6-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 07:03:41 -07:00
Xu Kuohai
d9ef13f727 bpf: Pass bpf_verifier_env to JIT
Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will
use env->insn_aux_data in the JIT stage to detect indirect jump targets.

Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c
code without verifier, introduce helper __bpf_prog_select_runtime()
to accept the env parameter.

Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and
switch to call __bpf_prog_select_runtime() in the verifier, with env
variable passed. The original bpf_prog_select_runtime() is preserved for
cbpf and lib/test_bpf.c, where env is NULL.

Now all constants blinding calls are moved into the verifier, except
the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted
by bpf_patch_insn_data() function for normal cases, so there is no need
to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it.

Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> # v12
Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # v14
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 07:03:40 -07:00
Xu Kuohai
d3e945223e bpf: Move constants blinding out of arch-specific JITs
During the JIT stage, constants blinding rewrites instructions but only
rewrites the private instruction copy of the JITed subprog, leaving the
global env->prog->insnsi and env->insn_aux_data untouched. This causes a
mismatch between subprog instructions and the global state, making it
difficult to use the global data in the JIT.

To avoid this mismatch, and given that all arch-specific JITs already
support constants blinding, move it to the generic verifier code, and
switch to rewrite the global env->prog->insnsi with the global states
adjusted, as other rewrites in the verifier do.

This removes the constants blinding calls in each JIT, which are largely
duplicated code across architectures.

Since constants blinding is only required for JIT, and there are two
JIT entry functions, jit_subprogs() for BPF programs with multiple
subprogs and bpf_prog_select_runtime() for programs with no subprogs,
move the constants blinding invocation into these two functions.

In the verifier path, bpf_patch_insn_data() is used to keep global
verifier auxiliary data in sync with patched instructions. A key
question is whether this global auxiliary data should be restored
on the failure path.

Besides instructions, bpf_patch_insn_data() adjusts:
  - prog->aux->poke_tab
  - env->insn_array_maps
  - env->subprog_info
  - env->insn_aux_data

For prog->aux->poke_tab, it is only used by JIT or only meaningful after
JIT succeeds, so it does not need to be restored on the failure path.

For env->insn_array_maps, when JIT fails, programs using insn arrays
are rejected by bpf_insn_array_ready() due to missing JIT addresses.
Hence, env->insn_array_maps is only meaningful for JIT and does not need
to be restored.

For subprog_info, if jit_subprogs fails and CONFIG_BPF_JIT_ALWAYS_ON
is not enabled, kernel falls back to interpreter. In this case,
env->subprog_info is used to determine subprogram stack depth. So it
must be restored on failure.

For env->insn_aux_data, it is freed by clear_insn_aux_data() at the
end of bpf_check(). Before freeing, clear_insn_aux_data() loops over
env->insn_aux_data to release jump targets recorded in it. The loop
uses env->prog->len as the array length, but this length no longer
matches the actual size of the adjusted env->insn_aux_data array after
constants blinding.

To address it, a simple approach is to keep insn_aux_data as adjusted
after failure, since it will be freed shortly, and record its actual size
for the loop in clear_insn_aux_data(). But since clear_insn_aux_data()
uses the same index to loop over both env->prog->insnsi and env->insn_aux_data,
this approach results in incorrect index for the insnsi array. So an
alternative approach is adopted: clone the original env->insn_aux_data
before blinding and restore it after failure, similar to env->prog.

For classic BPF programs, constants blinding works as before since it
is still invoked from bpf_prog_select_runtime().

Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Hari Bathini <hbathini@linux.ibm.com> # powerpc jit
Reviewed-by: Pu Lehui <pulehui@huawei.com> # riscv jit
Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # loongarch jit
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 07:03:40 -07:00
Linus Torvalds
4ddd4f0651 MMC core:
- Add NXP vendor and IW61x device IDs for WiFi chips over SDIO
  - Add quirk for incorrect manufacturing date
  - Add support for manufacturing date beyond 2025
  - Optimize support for secure erase/trim for some Kingston eMMCs
  - Remove support for the legacy "enable-sdio-wakeup" DT property
  - Use single block writes in the retry path
 
 MMC host:
  - dw_mmc: A great amount of cleanups/simplifications to improve the code
  - dw_mmc: Add clk_phase_map support
  - dw_mmc: Remove mshc DT alias support
  - dw_mmc-rockchip: Fix runtime PM support for internal phase
  - dw_mmc-rockchip: Add support for the RV1103B variant
  - loongson2: Add support for the Loongson-2K0300 SD/SDIO/eMMC controller
  - mtk-sd: Add support for the MT8189 variant
  - renesas_sdhi_core: Add support for selecting an optional mux
  - rtsx_pci_sdmmc: Simplify voltage switch handling
  - sdhci: Stop advertising the driver in dmesg
  - sdhci-esdhc-imx: Add 1-bit bus width support
  - sdhci-esdhc-imx: Add support for the NXP S32N79 variant
  - sdhci-msm: Add support for the IPQ5210 and IPQ9650 variants
  - sdhci-msm: Add support for wrapped keys
  - sdhci-msm: Enable ICE for CQE-capable controllers with non-CQE cards
  - sdhci-of-arasan: Add support for the Axiado AX3000 variant
  - sdhci-of-aspeed: Add support for the AST2700 variant
  - sdhci-of-bst: Add driver for the Black Sesame Technologies C1200 controller
  - sdhci-of-dwcmshc: Add support for the Canaan K230 variant
  - sdhci-of-dwcmshc: Add support for the HPE GSC variant
  - sdhci-of-dwcmshc: Prevent clock glitches to avoid malfunction
  - sdhci-of-k1: Add support for the K3 variant
 
 mux core/consumers:
  - core: Add helper functions for getting optional and selected mux-state
  - i2c-omap: Convert to devm_mux_state_get_optional_selected()
  - phy-renesas: Convert to devm_mux_state_get_optional_selected()
  - phy-can-transceiver: Convert to devm_mux_state_get_optional()
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Merge tag 'mmc-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add NXP vendor and IW61x device IDs for WiFi chips over SDIO
   - Add quirk for incorrect manufacturing date
   - Add support for manufacturing date beyond 2025
   - Optimize support for secure erase/trim for some Kingston eMMCs
   - Remove support for the legacy "enable-sdio-wakeup" DT property
   - Use single block writes in the retry path

  MMC host:
   - dw_mmc:
      - A great amount of cleanups/simplifications to improve the code
      - Add clk_phase_map support
      - Remove mshc DT alias support
   - dw_mmc-rockchip:
      - Fix runtime PM support for internal phase
      - Add support for the RV1103B variant
   - loongson2:
      - Add support for the Loongson-2K0300 SD/SDIO/eMMC controller
   - mtk-sd:
      - Add support for the MT8189 variant
   - renesas_sdhi_core:
      - Add support for selecting an optional mux
   - rtsx_pci_sdmmc:
      - Simplify voltage switch handling
   - sdhci:
      - Stop advertising the driver in dmesg
   - sdhci-esdhc-imx:
      - Add 1-bit bus width support
      - Add support for the NXP S32N79 variant
   - sdhci-msm:
      - Add support for the IPQ5210 and IPQ9650 variants
      - Add support for wrapped keys
      - Enable ICE for CQE-capable controllers with non-CQE cards
   - sdhci-of-arasan:
      - Add support for the Axiado AX3000 variant
   - sdhci-of-aspeed:
      - Add support for the AST2700 variant
   - sdhci-of-bst:
      - Add driver for the Black Sesame Technologies C1200 controller
   - sdhci-of-dwcmshc:
      - Add support for the Canaan K230 variant
      - Add support for the HPE GSC variant
      - Prevent clock glitches to avoid malfunction
   - sdhci-of-k1:
      - Add support for the K3 variant

  mux core/consumers:
   - core:
      - Add helper functions for getting optional and selected mux-state
   - i2c-omap:
      - Convert to devm_mux_state_get_optional_selected()
   - phy-renesas:
      - Convert to devm_mux_state_get_optional_selected()
   - phy-can-transceiver:
      - Convert to devm_mux_state_get_optional()"

* tag 'mmc-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (131 commits)
  mmc: sdhci-msm: Fix the wrapped key handling
  mmc: sdhci-of-dwcmshc: Disable clock before DLL configuration
  mmc: core: Simplify with scoped for each OF child loop
  mmc: core: Optimize size of struct mmc_queue_req
  mmc: vub300: clean up module init
  mmc: vub300: rename probe error labels
  mmc: dw_mmc: Remove dw_mci_start_request wrapper and rename core function
  mmc: dw_mmc: Inline dw_mci_queue_request() into dw_mci_request()
  mmc: block: Use MQRQ_XFER_SINGLE_BLOCK for both read and write recovery
  mmc: mmc_test: Replace hard-coded values with macros and consolidate test parameters
  mmc: block: Convert to use DEFINE_SIMPLE_DEV_PM_OPS()
  mmc: core: Replace the hard-coded shift value 9 with SECTOR_SHIFT
  mmc: sdhci-dwcmshc: Refactor Rockchip platform data for controller revisions
  mmc: core: Switch to use pm_ptr() for mmc_host_class_dev_pm_ops
  mmc: core: Remove legacy 'enable-sdio-wakeup' DT property support
  mmc: mmc_test: use kzalloc_flex
  mmc: mtk-sd: disable new_tx/rx and modify related settings for mt8189
  dt-bindings: mmc: hisilicon,hi3660-dw-mshc: Convert to DT schema
  dt-bindings: mmc: sdhci-msm: add IPQ9650 compatible
  mmc: block: use single block write in retry
  ...
2026-04-15 14:15:25 -07:00
Linus Torvalds
334fbe734e mm.git review status for linus..mm-stable
Everything:
 
 Total patches:       368
 Reviews/patch:       1.56
 Reviewed rate:       74%
 
 Excluding DAMON:
 
 Total patches:       316
 Reviews/patch:       1.77
 Reviewed rate:       81%
 
 Excluding DAMON and zram:
 
 Total patches:       306
 Reviews/patch:       1.81
 Reviewed rate:       82%
 
 Excluding DAMON, zram and maple_tree:
 
 Total patches:       276
 Reviews/patch:       2.01
 Reviewed rate:       91%
 
 Significant patch series in this merge:
 
 - The 30 patch series "maple_tree: Replace big node with maple copy"
   from Liam Howlett is mainly prepararatory work for ongoing development
   but it does reduce stack usage and is an improvement.
 
 - The 12 patch series "mm, swap: swap table phase III: remove swap_map"
   from Kairui Song offers memory savings by removing the static swap_map.
   It also yields some CPU savings and implements several cleanups.
 
 - The 2 patch series "mm: memfd_luo: preserve file seals" from Pratyush
   Yadav adds file seal preservation to LUO's memfd code.
 
 - The 2 patch series "mm: zswap: add per-memcg stat for incompressible
   pages" from Jiayuan Chen adds additional userspace stats reportng to
   zswap.
 
 - The 4 patch series "arch, mm: consolidate empty_zero_page" from Mike
   Rapoport implements some cleanups for our handling of ZERO_PAGE() and
   zero_pfn.
 
 - The 2 patch series "mm/kmemleak: Improve scan_should_stop()
   implementation" from Zhongqiu Han provides an robustness improvement and
   some cleanups in the kmemleak code.
 
 - The 4 patch series "Improve khugepaged scan logic" from Vernon Yang
   "improves the khugepaged scan logic and reduces CPU consumption by
   prioritizing scanning tasks that access memory frequently".
 
 - The 2 patch series "Make KHO Stateless" from Jason Miu simplifies
   Kexec Handover by "transitioning KHO from an xarray-based metadata
   tracking system with serialization to a radix tree data structure that
   can be passed directly to the next kernel"
 
 - The 3 patch series "mm: vmscan: add PID and cgroup ID to vmscan
   tracepoints" from Thomas Ballasi and Steven Rostedt enhances vmscan's
   tracepointing.
 
 - The 5 patch series "mm: arch/shstk: Common shadow stack mapping helper
   and VM_NOHUGEPAGE" from Catalin Marinas is a cleanup for the shadow
   stack code: remove per-arch code in favour of a generic implementation.
 
 - The 2 patch series "Fix KASAN support for KHO restored vmalloc
   regions" from Pasha Tatashin fixes a WARN() which can be emitted the KHO
   restores a vmalloc area.
 
 - The 4 patch series "mm: Remove stray references to pagevec" from Tal
   Zussman provides several cleanups, mainly udpating references to "struct
   pagevec", which became folio_batch three years ago.
 
 - The 17 patch series "mm: Eliminate fake head pages from vmemmap
   optimization" from Kiryl Shutsemau simplifies the HugeTLB vmemmap
   optimization (HVO) by changing how tail pages encode their relationship
   to the head page.
 
 - The 2 patch series "mm/damon/core: improve DAMOS quota efficiency for
   core layer filters" from SeongJae Park improves two problematic
   behaviors of DAMOS that makes it less efficient when core layer filters
   are used.
 
 - The 3 patch series "mm/damon: strictly respect min_nr_regions" from
   SeongJae Park improves DAMON usability by extending the treatment of the
   min_nr_regions user-settable parameter.
 
 - The 3 patch series "mm/page_alloc: pcp locking cleanup" from Vlastimil
   Babka is a proper fix for a previously hotfixed SMP=n issue.  Code
   simplifications and cleanups ennsed.
 
 - The 16 patch series "mm: cleanups around unmapping / zapping" from
   David Hildenbrand implements "a bunch of cleanups around unmapping and
   zapping.  Mostly simplifications, code movements, documentation and
   renaming of zapping functions".
 
 - The 6 patch series "support batched checking of the young flag for
   MGLRU" from Baolin Wang supports batched checking of the young flag for
   MGLRU.  It's part cleanups; one benchmark shows large performance
   benefits for arm64.
 
 - The 5 patch series "memcg: obj stock and slab stat caching cleanups"
   from Johannes Weiner provides memcg cleanup and robustness improvements.
 
 - The 5 patch series "Allow order zero pages in page reporting" from
   Yuvraj Sakshith enhances page_reporting's free page reporting - it is
   presently and undesirably order-0 pages when reporting free memory.
 
 - The 6 patch series "mm: vma flag tweaks" from Lorenzo Stoakes is
   cleanup work following from the recent conversion of the VMA flags to a
   bitmap.
 
 - The 10 patch series "mm/damon: add optional debugging-purpose sanity
   checks" from SeongJae Park adds some more developer-facing debug checks
   into DAMON core.
 
 - The 2 patch series "mm/damon: test and document power-of-2
   min_region_sz requirement" from SeongJae Park adds an additional DAMON
   kunit test and makes some adjustments to the addr_unit parameter
   handling.
 
 - The 3 patch series "mm/damon/core: make passed_sample_intervals
   comparisons overflow-safe" from SeongJae Park fixes a hard-to-hit time
   overflow issue in DAMON core.
 
 - The 7 patch series "mm/damon: improve/fixup/update ratio calculation,
   test and documentation" from SeongJae Park is a "batch of misc/minor
   improvements and fixups" for DAMON.
 
 - The 4 patch series "mm: move vma_(kernel|mmu)_pagesize() out of
   hugetlb.c" from David Hildenbrand fixes a possible issue with dax-device
   when CONFIG_HUGETLB=n.  Some code movement was required.
 
 - The 6 patch series "zram: recompression cleanups and tweaks" from
   Sergey Senozhatsky provides "a somewhat random mix of fixups,
   recompression cleanups and improvements" in the zram code.
 
 - The 11 patch series "mm/damon: support multiple goal-based quota
   tuning algorithms" from SeongJae Park extend DAMOS quotas goal
   auto-tuning to support multiple tuning algorithms that users can select.
 
 - The 4 patch series "mm: thp: reduce unnecessary
   start_stop_khugepaged()" from Breno Leitao fixes the khugpaged sysfs
   handling so we no longer spam the logs with reams of junk when
   starting/stopping khugepaged.
 
 - The 3 patch series "mm: improve map count checks" from Lorenzo Stoakes
   provides some cleanups and slight fixes in the mremap, mmap and vma
   code.
 
 - The 5 patch series "mm/damon: support addr_unit on default monitoring
   targets for modules" from SeongJae Park extends the use of DAMON core's
   addr_unit tunable.
 
 - The 5 patch series "mm: khugepaged cleanups and mTHP prerequisites"
   from Nico Pache provides cleanups in the khugepaged and is a base for
   Nico's planned khugepaged mTHP support.
 
 - The 15 patch series "mm: memory hot(un)plug and SPARSEMEM cleanups"
   from David Hildenbrand implements code movement and cleanups in the
   memhotplug and sparsemem code.
 
 - The 2 patch series "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and
   cleanup CONFIG_MIGRATION" from David Hildenbrand rationalizes some
   memhotplug Kconfig support.
 
 - The 6 patch series "change young flag check functions to return bool"
   from Baolin Wang is "a cleanup patchset to change all young flag check
   functions to return bool".
 
 - The 3 patch series "mm/damon/sysfs: fix memory leak and NULL
   dereference issues" from Josh Law and SeongJae Park fixes a few
   potential DAMON bugs.
 
 - The 25 patch series "mm/vma: convert vm_flags_t to vma_flags_t in vma
   code" from "converts a lot of the existing use of the legacy vm_flags_t
   data type to the new vma_flags_t type which replaces it".  Mainly in the
   vma code.
 
 - The 21 patch series "mm: expand mmap_prepare functionality and usage"
   from Lorenzo Stoakes "expands the mmap_prepare functionality, which is
   intended to replace the deprecated f_op->mmap hook which has been the
   source of bugs and security issues for some time".  Cleanups,
   documentation, extension of mmap_prepare into filesystem drivers.
 
 - The 13 patch series "mm/huge_memory: refactor zap_huge_pmd()" from
   Lorenzo Stoakes simplifies and cleans up zap_huge_pmd().  Additional
   cleanups around vm_normal_folio_pmd() and the softleaf functionality are
   performed.
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Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - "maple_tree: Replace big node with maple copy" (Liam Howlett)

   Mainly prepararatory work for ongoing development but it does reduce
   stack usage and is an improvement.

 - "mm, swap: swap table phase III: remove swap_map" (Kairui Song)

   Offers memory savings by removing the static swap_map. It also yields
   some CPU savings and implements several cleanups.

 - "mm: memfd_luo: preserve file seals" (Pratyush Yadav)

   File seal preservation to LUO's memfd code

 - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan
   Chen)

   Additional userspace stats reportng to zswap

 - "arch, mm: consolidate empty_zero_page" (Mike Rapoport)

   Some cleanups for our handling of ZERO_PAGE() and zero_pfn

 - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu
   Han)

   A robustness improvement and some cleanups in the kmemleak code

 - "Improve khugepaged scan logic" (Vernon Yang)

   Improve khugepaged scan logic and reduce CPU consumption by
   prioritizing scanning tasks that access memory frequently

 - "Make KHO Stateless" (Jason Miu)

   Simplify Kexec Handover by transitioning KHO from an xarray-based
   metadata tracking system with serialization to a radix tree data
   structure that can be passed directly to the next kernel

 - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas
   Ballasi and Steven Rostedt)

   Enhance vmscan's tracepointing

 - "mm: arch/shstk: Common shadow stack mapping helper and
   VM_NOHUGEPAGE" (Catalin Marinas)

   Cleanup for the shadow stack code: remove per-arch code in favour of
   a generic implementation

 - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin)

   Fix a WARN() which can be emitted the KHO restores a vmalloc area

 - "mm: Remove stray references to pagevec" (Tal Zussman)

   Several cleanups, mainly udpating references to "struct pagevec",
   which became folio_batch three years ago

 - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl
   Shutsemau)

   Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail
   pages encode their relationship to the head page

 - "mm/damon/core: improve DAMOS quota efficiency for core layer
   filters" (SeongJae Park)

   Improve two problematic behaviors of DAMOS that makes it less
   efficient when core layer filters are used

 - "mm/damon: strictly respect min_nr_regions" (SeongJae Park)

   Improve DAMON usability by extending the treatment of the
   min_nr_regions user-settable parameter

 - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka)

   The proper fix for a previously hotfixed SMP=n issue. Code
   simplifications and cleanups ensued

 - "mm: cleanups around unmapping / zapping" (David Hildenbrand)

   A bunch of cleanups around unmapping and zapping. Mostly
   simplifications, code movements, documentation and renaming of
   zapping functions

 - "support batched checking of the young flag for MGLRU" (Baolin Wang)

   Batched checking of the young flag for MGLRU. It's part cleanups; one
   benchmark shows large performance benefits for arm64

 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner)

   memcg cleanup and robustness improvements

 - "Allow order zero pages in page reporting" (Yuvraj Sakshith)

   Enhance free page reporting - it is presently and undesirably order-0
   pages when reporting free memory.

 - "mm: vma flag tweaks" (Lorenzo Stoakes)

   Cleanup work following from the recent conversion of the VMA flags to
   a bitmap

 - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae
   Park)

   Add some more developer-facing debug checks into DAMON core

 - "mm/damon: test and document power-of-2 min_region_sz requirement"
   (SeongJae Park)

   An additional DAMON kunit test and makes some adjustments to the
   addr_unit parameter handling

 - "mm/damon/core: make passed_sample_intervals comparisons
   overflow-safe" (SeongJae Park)

   Fix a hard-to-hit time overflow issue in DAMON core

 - "mm/damon: improve/fixup/update ratio calculation, test and
   documentation" (SeongJae Park)

   A batch of misc/minor improvements and fixups for DAMON

 - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David
   Hildenbrand)

   Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code
   movement was required.

 - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky)

   A somewhat random mix of fixups, recompression cleanups and
   improvements in the zram code

 - "mm/damon: support multiple goal-based quota tuning algorithms"
   (SeongJae Park)

   Extend DAMOS quotas goal auto-tuning to support multiple tuning
   algorithms that users can select

 - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao)

   Fix the khugpaged sysfs handling so we no longer spam the logs with
   reams of junk when starting/stopping khugepaged

 - "mm: improve map count checks" (Lorenzo Stoakes)

   Provide some cleanups and slight fixes in the mremap, mmap and vma
   code

 - "mm/damon: support addr_unit on default monitoring targets for
   modules" (SeongJae Park)

   Extend the use of DAMON core's addr_unit tunable

 - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache)

   Cleanups to khugepaged and is a base for Nico's planned khugepaged
   mTHP support

 - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand)

   Code movement and cleanups in the memhotplug and sparsemem code

 - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup
   CONFIG_MIGRATION" (David Hildenbrand)

   Rationalize some memhotplug Kconfig support

 - "change young flag check functions to return bool" (Baolin Wang)

   Cleanups to change all young flag check functions to return bool

 - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh
   Law and SeongJae Park)

   Fix a few potential DAMON bugs

 - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo
   Stoakes)

   Convert a lot of the existing use of the legacy vm_flags_t data type
   to the new vma_flags_t type which replaces it. Mainly in the vma
   code.

 - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes)

   Expand the mmap_prepare functionality, which is intended to replace
   the deprecated f_op->mmap hook which has been the source of bugs and
   security issues for some time. Cleanups, documentation, extension of
   mmap_prepare into filesystem drivers

 - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes)

   Simplify and clean up zap_huge_pmd(). Additional cleanups around
   vm_normal_folio_pmd() and the softleaf functionality are performed.

* tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
  mm: fix deferred split queue races during migration
  mm/khugepaged: fix issue with tracking lock
  mm/huge_memory: add and use has_deposited_pgtable()
  mm/huge_memory: add and use normal_or_softleaf_folio_pmd()
  mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio()
  mm/huge_memory: separate out the folio part of zap_huge_pmd()
  mm/huge_memory: use mm instead of tlb->mm
  mm/huge_memory: remove unnecessary sanity checks
  mm/huge_memory: deduplicate zap deposited table call
  mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE()
  mm/huge_memory: add a common exit path to zap_huge_pmd()
  mm/huge_memory: handle buggy PMD entry in zap_huge_pmd()
  mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc
  mm/huge: avoid big else branch in zap_huge_pmd()
  mm/huge_memory: simplify vma_is_specal_huge()
  mm: on remap assert that input range within the proposed VMA
  mm: add mmap_action_map_kernel_pages[_full]()
  uio: replace deprecated mmap hook with mmap_prepare in uio_info
  drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare
  mm: allow handling of stacked mmap_prepare hooks in more drivers
  ...
2026-04-15 12:59:16 -07:00
Puranjay Mohan
42f18ae530 bpf, arm64: Remove redundant bpf_flush_icache() after pack allocator finalize
bpf_flush_icache() calls flush_icache_range() to clean the data cache
and invalidate the instruction cache for the JITed code region. However,
since commit 1dad391dae ("bpf, arm64: use bpf_prog_pack for memory
management"), this flush is redundant.

bpf_jit_binary_pack_finalize() copies the JITed instructions to the ROX
region via bpf_arch_text_copy() -> aarch64_insn_copy() -> __text_poke(),
and __text_poke() already calls flush_icache_range() on the written
range. The subsequent bpf_flush_icache() repeats the same cache
maintenance on an overlapping range, including an unnecessary second
synchronous IPI to all CPUs via kick_all_cpus_sync().

Remove the redundant bpf_flush_icache() call and its now-unused
definition.

Fixes: 1dad391dae ("bpf, arm64: use bpf_prog_pack for memory management")
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20260413191111.3426023-2-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:09:46 -07:00
Daniel Borkmann
1dd8be4ec7 bpf, arm64: Fix off-by-one in check_imm signed range check
check_imm(bits, imm) is used in the arm64 BPF JIT to verify that
a branch displacement (in arm64 instruction units) fits into the
signed N-bit immediate field of a B, B.cond or CBZ/CBNZ encoding
before it is handed to the encoder. The macro currently tests for
(imm > 0 && imm >> bits) || (imm < 0 && ~imm >> bits) which admits
values in [-2^N, 2^N) — effectively a signed (N+1)-bit range. A
signed N-bit field only holds [-2^(N-1), 2^(N-1)), so the check
admits one extra bit of range on each side.

In particular, for check_imm19(), values in [2^18, 2^19) slip past
the check but do not fit into the 19-bit signed imm19 field of
B.cond. aarch64_insn_encode_immediate() then masks the raw value
into the 19-bit field, setting bit 18 (the sign bit) and flipping
a forward branch into a backward one. Same class of issue exists
for check_imm26() and the B/BL encoding. Shift by (bits - 1)
instead of bits so the actual signed N-bit range is enforced.

Fixes: e54bcde3d6 ("arm64: eBPF JIT compiler")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20260415121403.639619-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:08:03 -07:00
Daniel Borkmann
48d83d9493 bpf, arm64: Reject out-of-range B.cond targets
aarch64_insn_gen_cond_branch_imm() calls label_imm_common() to
compute a 19-bit signed byte offset for a conditional branch,
but unlike its siblings aarch64_insn_gen_branch_imm() and
aarch64_insn_gen_comp_branch_imm(), it does not check whether
label_imm_common() returned its out-of-range sentinel (range)
before feeding the value to aarch64_insn_encode_immediate().

aarch64_insn_encode_immediate() unconditionally masks the value
with the 19-bit field mask, so an offset that was rejected by
label_imm_common() gets silently truncated. With the sentinel
value SZ_1M, the resulting field ends up with bit 18 (the sign
bit of the 19-bit signed displacement) set, and the CPU decodes
it as a ~1 MiB *backward* branch, producing an incorrectly
targeted B.cond instruction. For code-gen locations like the
emit_bpf_tail_call() this function is the only barrier between
an overflowing displacement and a silently miscompiled branch.

Fix it by returning AARCH64_BREAK_FAULT when the offset is out
of range, so callers see a loud failure instead of a silently
misencoded branch. validate_code() scans the generated image
for any AARCH64_BREAK_FAULT and then lets the JIT fail.

Fixes: 345e0d35ec ("arm64: introduce aarch64_insn_gen_cond_branch_imm()")
Fixes: c94ae4f7c5 ("arm64: insn: remove BUG_ON from codegen")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20260415121403.639619-1-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:07:57 -07:00
Linus Torvalds
91a4855d6c Networking changes for 7.1.
Core & protocols
 ----------------
 
  - Support HW queue leasing, allowing containers to be granted access
    to HW queues for zero-copy operations and AF_XDP.
 
  - Number of code moves to help the compiler with inlining.
    Avoid output arguments for returning drop reason where possible.
 
  - Rework drop handling within qdiscs to include more metadata
    about the reason and dropping qdisc in the tracepoints.
 
  - Remove the rtnl_lock use from IP Multicast Routing.
 
  - Pack size information into the Rx Flow Steering table pointer
    itself. This allows making the table itself a flat array of u32s,
    thus making the table allocation size a power of two.
 
  - Report TCP delayed ack timer information via socket diag.
 
  - Add ip_local_port_step_width sysctl to allow distributing the randomly
    selected ports more evenly throughout the allowed space.
 
  - Add support for per-route tunsrc in IPv6 segment routing.
 
  - Start work of switching sockopt handling to iov_iter.
 
  - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
    buffer size drifting up.
 
  - Support MSG_EOR in MPTCP.
 
  - Add stp_mode attribute to the bridge driver for STP mode selection.
    This addresses concerns about call_usermodehelper() usage.
 
  - Remove UDP-Lite support (as announced in 2023).
 
  - Remove support for building IPv6 as a module.
    Remove the now unnecessary function calling indirection.
 
 Cross-tree stuff
 ----------------
 
  - Move Michael MIC code from generic crypto into wireless,
    it's considered insecure but some WiFi networks still need it.
 
 Netfilter
 ---------
 
  - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
    object allocations by using fib6_lookup() + RCU.
    Florian W reports this gets us ~13% higher packet rate.
 
  - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
    switch the service tables to be per-net. Convert some code that
    walks the service lists to use RCU instead of the service_mutex.
 
  - Add more opinionated input validation to lower security exposure.
 
  - Make IPVS hash tables to be per-netns and resizable.
 
 Wireless
 --------
 
  - Finished assoc frame encryption/EPPKE/802.1X-over-auth.
 
  - Radar detection improvements.
 
  - Add 6 GHz incumbent signal detection APIs.
 
  - Multi-link support for FILS, probe response templates and
    client probing.
 
  - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
    aka Wi-Fi Aware) so less work must be in firmware.
 
 Driver API
 ----------
 
  - Add numerical ID for devlink instances (to avoid having to create
    fake bus/device pairs just to have an ID). Support shared devlink
    instances which span multiple PFs.
 
  - Add standard counters for reporting pause storm events
    (implement in mlx5 and fbnic).
 
  - Add configuration API for completion writeback buffering
    (implement in mana).
 
  - Support driver-initiated change of RSS context sizes.
 
  - Support DPLL monitoring input frequency (implement in zl3073x).
 
  - Support per-port resources in devlink (implement in mlx5).
 
 Misc
 ----
 
  - Expand the YAML spec for Netfilter.
 
 Drivers
 -------
 
  - Software:
    - macvlan: support multicast rx for bridge ports with shared source
      MAC address
    - team: decouple receive and transmit enablement for IEEE 802.3ad
      LACP "independent control"
 
  - Ethernet high-speed NICs:
    - nVidia/Mellanox:
      - support high order pages in zero-copy mode (for payload
        coalescing)
      - support multiple packets in a page (for systems with 64kB pages)
    - Broadcom 25-400GE (bnxt):
      - implement XDP RSS hash metadata extraction
      - add software fallback for UDP GSO, lowering the IOMMU cost
    - Broadcom 800GE (bnge):
      - add link status and configuration handling
      - add various HW and SW statistics
    - Marvell/Cavium:
      - NPC HW block support for cn20k
    - Huawei (hinic3):
      - add mailbox / control queue
      - add rx VLAN offload
      - add driver info and link management
 
  - Ethernet NICs:
    - Marvell/Aquantia:
      - support reading SFP module info on some AQC100 cards
    - Realtek PCI (r8169):
      - add support for RTL8125cp
    - Realtek USB (r8152):
      - support for the RTL8157 5Gbit chip
      - add 2500baseT EEE status/configuration support
 
  - Ethernet NICs embedded and off-the-shelf IP:
    - Synopsys (stmmac):
      - cleanup and reorganize SerDes handling and PCS support
      - cleanup descriptor handling and per-platform data
      - cleanup and consolidate MDIO defines and handling
      - shrink driver memory use for internal structures
      - improve Tx IRQ coalescing
      - improve TCP segmentation handling
      - add support for Spacemit K3
    - Cadence (macb):
      - support PHYs that have inband autoneg disabled with GEM
      - support IEEE 802.3az EEE
      - rework usrio capabilities and handling
    - AMD (xgbe):
      - improve power management for S0i3
      - improve TX resilience for link-down handling
 
  - Virtual:
    - Google cloud vNIC:
      - support larger ring sizes in DQO-QPL mode
      - improve HW-GRO handling
      - support UDP GSO for DQO format
    - PCIe NTB:
      - support queue count configuration
 
  - Ethernet PHYs:
    - automatically disable PHY autonomous EEE if MAC is in charge
    - Broadcom:
      - add BCM84891/BCM84892 support
    - Micrel:
      - support for LAN9645X internal PHY
    - Realtek:
      - add RTL8224 pair order support
      - support PHY LEDs on RTL8211F-VD
      - support spread spectrum clocking (SSC)
    - Maxlinear:
      - add PHY-level statistics via ethtool
 
  - Ethernet switches:
    - Maxlinear (mxl862xx):
      - support for bridge offloading
      - support for VLANs
      - support driver statistics
 
  - Bluetooth:
    - large number of fixes and new device IDs
    - Mediatek:
      - support MT6639 (MT7927)
      - support MT7902 SDIO
 
  - WiFi:
    - Intel (iwlwifi):
      - UNII-9 and continuing UHR work
    - MediaTek (mt76):
      - mt7996/mt7925 MLO fixes/improvements
      - mt7996 NPU support (HW eth/wifi traffic offload)
    - Qualcomm (ath12k):
      - monitor mode support on IPQ5332
      - basic hwmon temperature reporting
      - support IPQ5424
    - Realtek:
      - add USB RX aggregation to improve performance
      - add USB TX flow control by tracking in-flight URBs
 
  - Cellular:
    - IPA v5.2 support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support HW queue leasing, allowing containers to be granted access
     to HW queues for zero-copy operations and AF_XDP

   - Number of code moves to help the compiler with inlining. Avoid
     output arguments for returning drop reason where possible

   - Rework drop handling within qdiscs to include more metadata about
     the reason and dropping qdisc in the tracepoints

   - Remove the rtnl_lock use from IP Multicast Routing

   - Pack size information into the Rx Flow Steering table pointer
     itself. This allows making the table itself a flat array of u32s,
     thus making the table allocation size a power of two

   - Report TCP delayed ack timer information via socket diag

   - Add ip_local_port_step_width sysctl to allow distributing the
     randomly selected ports more evenly throughout the allowed space

   - Add support for per-route tunsrc in IPv6 segment routing

   - Start work of switching sockopt handling to iov_iter

   - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
     buffer size drifting up

   - Support MSG_EOR in MPTCP

   - Add stp_mode attribute to the bridge driver for STP mode selection.
     This addresses concerns about call_usermodehelper() usage

   - Remove UDP-Lite support (as announced in 2023)

   - Remove support for building IPv6 as a module. Remove the now
     unnecessary function calling indirection

  Cross-tree stuff:

   - Move Michael MIC code from generic crypto into wireless, it's
     considered insecure but some WiFi networks still need it

  Netfilter:

   - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
     object allocations by using fib6_lookup() + RCU.

     Florian W reports this gets us ~13% higher packet rate

   - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
     switch the service tables to be per-net. Convert some code that
     walks the service lists to use RCU instead of the service_mutex

   - Add more opinionated input validation to lower security exposure

   - Make IPVS hash tables to be per-netns and resizable

  Wireless:

   - Finished assoc frame encryption/EPPKE/802.1X-over-auth

   - Radar detection improvements

   - Add 6 GHz incumbent signal detection APIs

   - Multi-link support for FILS, probe response templates and client
     probing

   - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
     aka Wi-Fi Aware) so less work must be in firmware

  Driver API:

   - Add numerical ID for devlink instances (to avoid having to create
     fake bus/device pairs just to have an ID). Support shared devlink
     instances which span multiple PFs

   - Add standard counters for reporting pause storm events (implement
     in mlx5 and fbnic)

   - Add configuration API for completion writeback buffering (implement
     in mana)

   - Support driver-initiated change of RSS context sizes

   - Support DPLL monitoring input frequency (implement in zl3073x)

   - Support per-port resources in devlink (implement in mlx5)

  Misc:

   - Expand the YAML spec for Netfilter

  Drivers

   - Software:
      - macvlan: support multicast rx for bridge ports with shared
        source MAC address
      - team: decouple receive and transmit enablement for IEEE 802.3ad
        LACP "independent control"

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - support high order pages in zero-copy mode (for payload
           coalescing)
         - support multiple packets in a page (for systems with 64kB
           pages)
      - Broadcom 25-400GE (bnxt):
         - implement XDP RSS hash metadata extraction
         - add software fallback for UDP GSO, lowering the IOMMU cost
      - Broadcom 800GE (bnge):
         - add link status and configuration handling
         - add various HW and SW statistics
      - Marvell/Cavium:
         - NPC HW block support for cn20k
      - Huawei (hinic3):
         - add mailbox / control queue
         - add rx VLAN offload
         - add driver info and link management

   - Ethernet NICs:
      - Marvell/Aquantia:
         - support reading SFP module info on some AQC100 cards
      - Realtek PCI (r8169):
         - add support for RTL8125cp
      - Realtek USB (r8152):
         - support for the RTL8157 5Gbit chip
         - add 2500baseT EEE status/configuration support

   - Ethernet NICs embedded and off-the-shelf IP:
      - Synopsys (stmmac):
         - cleanup and reorganize SerDes handling and PCS support
         - cleanup descriptor handling and per-platform data
         - cleanup and consolidate MDIO defines and handling
         - shrink driver memory use for internal structures
         - improve Tx IRQ coalescing
         - improve TCP segmentation handling
         - add support for Spacemit K3
      - Cadence (macb):
         - support PHYs that have inband autoneg disabled with GEM
         - support IEEE 802.3az EEE
         - rework usrio capabilities and handling
      - AMD (xgbe):
         - improve power management for S0i3
         - improve TX resilience for link-down handling

   - Virtual:
      - Google cloud vNIC:
         - support larger ring sizes in DQO-QPL mode
         - improve HW-GRO handling
         - support UDP GSO for DQO format
      - PCIe NTB:
         - support queue count configuration

   - Ethernet PHYs:
      - automatically disable PHY autonomous EEE if MAC is in charge
      - Broadcom:
         - add BCM84891/BCM84892 support
      - Micrel:
         - support for LAN9645X internal PHY
      - Realtek:
         - add RTL8224 pair order support
         - support PHY LEDs on RTL8211F-VD
         - support spread spectrum clocking (SSC)
      - Maxlinear:
         - add PHY-level statistics via ethtool

   - Ethernet switches:
      - Maxlinear (mxl862xx):
         - support for bridge offloading
         - support for VLANs
         - support driver statistics

   - Bluetooth:
      - large number of fixes and new device IDs
      - Mediatek:
         - support MT6639 (MT7927)
         - support MT7902 SDIO

   - WiFi:
      - Intel (iwlwifi):
         - UNII-9 and continuing UHR work
      - MediaTek (mt76):
         - mt7996/mt7925 MLO fixes/improvements
         - mt7996 NPU support (HW eth/wifi traffic offload)
      - Qualcomm (ath12k):
         - monitor mode support on IPQ5332
         - basic hwmon temperature reporting
         - support IPQ5424
      - Realtek:
         - add USB RX aggregation to improve performance
         - add USB TX flow control by tracking in-flight URBs

   - Cellular:
      - IPA v5.2 support"

* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
  net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
  wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
  wireguard: allowedips: remove redundant space
  tools: ynl: add sample for wireguard
  wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
  MAINTAINERS: Add netkit selftest files
  selftests/net: Add additional test coverage in nk_qlease
  selftests/net: Split netdevsim tests from HW tests in nk_qlease
  tools/ynl: Make YnlFamily closeable as a context manager
  net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
  net: airoha: Fix VIP configuration for AN7583 SoC
  net: caif: clear client service pointer on teardown
  net: strparser: fix skb_head leak in strp_abort_strp()
  net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
  selftests/bpf: add test for xdp_master_redirect with bond not up
  net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
  net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
  sctp: disable BH before calling udp_tunnel_xmit_skb()
  sctp: fix missing encap_port propagation for GSO fragments
  net: airoha: Rely on net_device pointer in ETS callbacks
  ...
2026-04-14 18:36:10 -07:00
Linus Torvalds
f5ad410100 bpf-next-7.1
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Merge tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

 - Welcome new BPF maintainers: Kumar Kartikeya Dwivedi, Eduard
   Zingerman while Martin KaFai Lau reduced his load to Reviwer.

 - Lots of fixes everywhere from many first time contributors. Thank you
   All.

 - Diff stat is dominated by mechanical split of verifier.c into
   multiple components:

    - backtrack.c: backtracking logic and jump history
    - states.c:    state equivalence
    - cfg.c:       control flow graph, postorder, strongly connected
                   components
    - liveness.c:  register and stack liveness
    - fixups.c:    post-verification passes: instruction patching, dead
                   code removal, bpf_loop inlining, finalize fastcall

   8k line were moved. verifier.c still stands at 20k lines.

   Further refactoring is planned for the next release.

 - Replace dynamic stack liveness with static stack liveness based on
   data flow analysis.

   This improved the verification time by 2x for some programs and
   equally reduced memory consumption. New logic is in liveness.c and
   supported by constant folding in const_fold.c (Eduard Zingerman,
   Alexei Starovoitov)

 - Introduce BTF layout to ease addition of new BTF kinds (Alan Maguire)

 - Use kmalloc_nolock() universally in BPF local storage (Amery Hung)

 - Fix several bugs in linked registers delta tracking (Daniel Borkmann)

 - Improve verifier support of arena pointers (Emil Tsalapatis)

 - Improve verifier tracking of register bounds in min/max and tnum
   domains (Harishankar Vishwanathan, Paul Chaignon, Hao Sun)

 - Further extend support for implicit arguments in the verifier (Ihor
   Solodrai)

 - Add support for nop,nop5 instruction combo for USDT probes in libbpf
   (Jiri Olsa)

 - Support merging multiple module BTFs (Josef Bacik)

 - Extend applicability of bpf_kptr_xchg (Kaitao Cheng)

 - Retire rcu_trace_implies_rcu_gp() (Kumar Kartikeya Dwivedi)

 - Support variable offset context access for 'syscall' programs (Kumar
   Kartikeya Dwivedi)

 - Migrate bpf_task_work and dynptr to kmalloc_nolock() (Mykyta
   Yatsenko)

 - Fix UAF in in open-coded task_vma iterator (Puranjay Mohan)

* tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (241 commits)
  selftests/bpf: cover short IPv4/IPv6 inputs with adjust_room
  bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb
  selftests/bpf: Use memfd_create instead of shm_open in cgroup_iter_memcg
  selftests/bpf: Add test for cgroup storage OOB read
  bpf: Fix OOB in pcpu_init_value
  selftests/bpf: Fix reg_bounds to match new tnum-based refinement
  selftests/bpf: Add tests for non-arena/arena operations
  bpf: Allow instructions with arena source and non-arena dest registers
  bpftool: add missing fsession to the usage and docs of bpftool
  docs/bpf: add missing fsession attach type to docs
  bpf: add missing fsession to the verifier log
  bpf: Move BTF checking logic into check_btf.c
  bpf: Move backtracking logic to backtrack.c
  bpf: Move state equivalence logic to states.c
  bpf: Move check_cfg() into cfg.c
  bpf: Move compute_insn_live_regs() into liveness.c
  bpf: Move fixup/post-processing logic from verifier.c into fixups.c
  bpf: Simplify do_check_insn()
  bpf: Move checks for reserved fields out of the main pass
  bpf: Delete unused variable
  ...
2026-04-14 18:04:04 -07:00
Linus Torvalds
c43267e679 arm64 updates for 7.1:
Core features:
 
  - Add support for FEAT_LSUI, allowing futex atomic operations without
    toggling Privileged Access Never (PAN)
 
  - Further refactor the arm64 exception handling code towards the
    generic entry infrastructure
 
  - Optimise __READ_ONCE() with CONFIG_LTO=y and allow alias analysis
    through it
 
 Memory management:
 
  - Refactor the arm64 TLB invalidation API and implementation for better
    control over barrier placement and level-hinted invalidation
 
  - Enable batched TLB flushes during memory hot-unplug
 
  - Fix rodata=full block mapping support for realm guests (when
    BBML2_NOABORT is available)
 
 Perf and PMU:
 
  - Add support for a whole bunch of system PMUs featured in NVIDIA's
    Tegra410 SoC (cspmu extensions for the fabric and PCIe, new drivers
    for CPU/C2C memory latency PMUs)
 
  - Clean up iomem resource handling in the Arm CMN driver
 
  - Fix signedness handling of AA64DFR0.{PMUVer,PerfMon}
 
 MPAM (Memory Partitioning And Monitoring):
 
  - Add architecture context-switch and hiding of the feature from KVM
 
  - Add interface to allow MPAM to be exposed to user-space using resctrl
 
  - Add errata workaround for some existing platforms
 
  - Add documentation for using MPAM and what shape of platforms can use
    resctrl
 
 Miscellaneous:
 
  - Check DAIF (and PMR, where relevant) at task-switch time
 
  - Skip TFSR_EL1 checks and barriers in synchronous MTE tag check mode
    (only relevant to asynchronous or asymmetric tag check modes)
 
  - Remove a duplicate allocation in the kexec code
 
  - Remove redundant save/restore of SCS SP on entry to/from EL0
 
  - Generate the KERNEL_HWCAP_ definitions from the arm64 hwcap
    descriptions
 
  - Add kselftest coverage for cmpbr_sigill()
 
  - Update sysreg definitions
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:
 "The biggest changes are MPAM enablement in drivers/resctrl and new PMU
  support under drivers/perf.

  On the core side, FEAT_LSUI lets futex atomic operations with EL0
  permissions, avoiding PAN toggling.

  The rest is mostly TLB invalidation refactoring, further generic entry
  work, sysreg updates and a few fixes.

  Core features:

   - Add support for FEAT_LSUI, allowing futex atomic operations without
     toggling Privileged Access Never (PAN)

   - Further refactor the arm64 exception handling code towards the
     generic entry infrastructure

   - Optimise __READ_ONCE() with CONFIG_LTO=y and allow alias analysis
     through it

  Memory management:

   - Refactor the arm64 TLB invalidation API and implementation for
     better control over barrier placement and level-hinted invalidation

   - Enable batched TLB flushes during memory hot-unplug

   - Fix rodata=full block mapping support for realm guests (when
     BBML2_NOABORT is available)

  Perf and PMU:

   - Add support for a whole bunch of system PMUs featured in NVIDIA's
     Tegra410 SoC (cspmu extensions for the fabric and PCIe, new drivers
     for CPU/C2C memory latency PMUs)

   - Clean up iomem resource handling in the Arm CMN driver

   - Fix signedness handling of AA64DFR0.{PMUVer,PerfMon}

  MPAM (Memory Partitioning And Monitoring):

   - Add architecture context-switch and hiding of the feature from KVM

   - Add interface to allow MPAM to be exposed to user-space using
     resctrl

   - Add errata workaround for some existing platforms

   - Add documentation for using MPAM and what shape of platforms can
     use resctrl

  Miscellaneous:

   - Check DAIF (and PMR, where relevant) at task-switch time

   - Skip TFSR_EL1 checks and barriers in synchronous MTE tag check mode
     (only relevant to asynchronous or asymmetric tag check modes)

   - Remove a duplicate allocation in the kexec code

   - Remove redundant save/restore of SCS SP on entry to/from EL0

   - Generate the KERNEL_HWCAP_ definitions from the arm64 hwcap
     descriptions

   - Add kselftest coverage for cmpbr_sigill()

   - Update sysreg definitions"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (109 commits)
  arm64: rsi: use linear-map alias for realm config buffer
  arm64: Kconfig: fix duplicate word in CMDLINE help text
  arm64: mte: Skip TFSR_EL1 checks and barriers in synchronous tag check mode
  arm64/sysreg: Update ID_AA64SMFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64FPFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ISAR2_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ISAR0_EL1 description to DDI0601 2025-12
  arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps
  arm64: kexec: Remove duplicate allocation for trans_pgd
  ACPI: AGDI: fix missing newline in error message
  arm64: Check DAIF (and PMR) at task-switch time
  arm64: entry: Use split preemption logic
  arm64: entry: Use irqentry_{enter_from,exit_to}_kernel_mode()
  arm64: entry: Consistently prefix arm64-specific wrappers
  arm64: entry: Don't preempt with SError or Debug masked
  entry: Split preemption from irqentry_exit_to_kernel_mode()
  entry: Split kernel mode logic from irqentry_{enter,exit}()
  entry: Move irqentry_enter() prototype later
  entry: Remove local_irq_{enable,disable}_exit_to_user()
  ...
2026-04-14 16:48:56 -07:00
Axel Flordal
c7ff53ef45 arm64: dts: apple: Fix spelling error
Change "configiguration" to "configuration".

Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Axel Flordal <axel@flordal.net>
Link: https://patch.msgid.link/2338500.vFx2qVVIhK@fedora
Signed-off-by: Sven Peter <sven@kernel.org>
2026-04-14 22:13:19 +02:00
Linus Torvalds
7393febcb1 Locking updates for v7.1:
Mutexes:
 
  - Add killable flavor to guard definitions (Davidlohr Bueso)
  - Remove the list_head from struct mutex (Matthew Wilcox)
  - Rename mutex_init_lockep() (Davidlohr Bueso)
 
 rwsems:
 
  - Remove the list_head from struct rw_semaphore and
    replace it with a single pointer (Matthew Wilcox)
  - Fix logic error in rwsem_del_waiter() (Andrei Vagin)
 
 Semaphores:
 
  - Remove the list_head from struct semaphore (Matthew Wilcox)
 
 Jump labels:
 
  - Use ATOMIC_INIT() for initialization of .enabled (Thomas Weißschuh)
  - Remove workaround for old compilers in initializations
    (Thomas Weißschuh)
 
 Lock context analysis changes and improvements:
 
  - Add context analysis for rwsems (Peter Zijlstra)
  - Fix rwlock and spinlock lock context annotations (Bart Van Assche)
  - Fix rwlock support in <linux/spinlock_up.h> (Bart Van Assche)
  - Add lock context annotations in the spinlock implementation
    (Bart Van Assche)
  - signal: Fix the lock_task_sighand() annotation (Bart Van Assche)
  - ww-mutex: Fix the ww_acquire_ctx function annotations
    (Bart Van Assche)
  - Add lock context support in do_raw_{read,write}_trylock()
    (Bart Van Assche)
  - arm64, compiler-context-analysis: Permit alias analysis through
    __READ_ONCE() with CONFIG_LTO=y (Marco Elver)
  - Add __cond_releases() (Peter Zijlstra)
  - Add context analysis for mutexes (Peter Zijlstra)
  - Add context analysis for rtmutexes (Peter Zijlstra)
  - Convert futexes to compiler context analysis (Peter Zijlstra)
 
 Rust integration updates:
 
  - Add atomic fetch_sub() implementation (Andreas Hindborg)
  - Refactor various rust_helper_ methods for expansion (Boqun Feng)
  - Add Atomic<*{mut,const} T> support (Boqun Feng)
  - Add atomic operation helpers over raw pointers (Boqun Feng)
  - Add performance-optimal Flag type for atomic booleans, to avoid
    slow byte-sized RMWs on architectures that don't support them.
    (FUJITA Tomonori)
  - Misc cleanups and fixes (Andreas Hindborg, Boqun Feng,
    FUJITA Tomonori)
 
 LTO support updates:
 
  - arm64: Optimize __READ_ONCE() with CONFIG_LTO=y (Marco Elver)
  - compiler: Simplify generic RELOC_HIDE() (Marco Elver)
 
 Miscellaneous fixes and cleanups by Peter Zijlstra, Randy Dunlap,
 Thomas Weißschuh, Davidlohr Bueso and Mikhail Gavrilov.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Mutexes:

   - Add killable flavor to guard definitions (Davidlohr Bueso)

   - Remove the list_head from struct mutex (Matthew Wilcox)

   - Rename mutex_init_lockep() (Davidlohr Bueso)

  rwsems:

   - Remove the list_head from struct rw_semaphore and
     replace it with a single pointer (Matthew Wilcox)

   - Fix logic error in rwsem_del_waiter() (Andrei Vagin)

  Semaphores:

   - Remove the list_head from struct semaphore (Matthew Wilcox)

  Jump labels:

   - Use ATOMIC_INIT() for initialization of .enabled (Thomas Weißschuh)

   - Remove workaround for old compilers in initializations
     (Thomas Weißschuh)

  Lock context analysis changes and improvements:

   - Add context analysis for rwsems (Peter Zijlstra)

   - Fix rwlock and spinlock lock context annotations (Bart Van Assche)

   - Fix rwlock support in <linux/spinlock_up.h> (Bart Van Assche)

   - Add lock context annotations in the spinlock implementation
     (Bart Van Assche)

   - signal: Fix the lock_task_sighand() annotation (Bart Van Assche)

   - ww-mutex: Fix the ww_acquire_ctx function annotations
     (Bart Van Assche)

   - Add lock context support in do_raw_{read,write}_trylock()
     (Bart Van Assche)

   - arm64, compiler-context-analysis: Permit alias analysis through
     __READ_ONCE() with CONFIG_LTO=y (Marco Elver)

   - Add __cond_releases() (Peter Zijlstra)

   - Add context analysis for mutexes (Peter Zijlstra)

   - Add context analysis for rtmutexes (Peter Zijlstra)

   - Convert futexes to compiler context analysis (Peter Zijlstra)

  Rust integration updates:

   - Add atomic fetch_sub() implementation (Andreas Hindborg)

   - Refactor various rust_helper_ methods for expansion (Boqun Feng)

   - Add Atomic<*{mut,const} T> support (Boqun Feng)

   - Add atomic operation helpers over raw pointers (Boqun Feng)

   - Add performance-optimal Flag type for atomic booleans, to avoid
     slow byte-sized RMWs on architectures that don't support them.
     (FUJITA Tomonori)

   - Misc cleanups and fixes (Andreas Hindborg, Boqun Feng, FUJITA
     Tomonori)

  LTO support updates:

   - arm64: Optimize __READ_ONCE() with CONFIG_LTO=y (Marco Elver)

   - compiler: Simplify generic RELOC_HIDE() (Marco Elver)

  Miscellaneous fixes and cleanups by Peter Zijlstra, Randy Dunlap,
  Thomas Weißschuh, Davidlohr Bueso and Mikhail Gavrilov"

* tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
  compiler: Simplify generic RELOC_HIDE()
  locking: Add lock context annotations in the spinlock implementation
  locking: Add lock context support in do_raw_{read,write}_trylock()
  locking: Fix rwlock support in <linux/spinlock_up.h>
  lockdep: Raise default stack trace limits when KASAN is enabled
  cleanup: Optimize guards
  jump_label: remove workaround for old compilers in initializations
  jump_label: use ATOMIC_INIT() for initialization of .enabled
  futex: Convert to compiler context analysis
  locking/rwsem: Fix logic error in rwsem_del_waiter()
  locking/rwsem: Add context analysis
  locking/rtmutex: Add context analysis
  locking/mutex: Add context analysis
  compiler-context-analysys: Add __cond_releases()
  locking/mutex: Remove the list_head from struct mutex
  locking/semaphore: Remove the list_head from struct semaphore
  locking/rwsem: Remove the list_head from struct rw_semaphore
  rust: atomic: Update a safety comment in impl of `fetch_add()`
  rust: sync: atomic: Update documentation for `fetch_add()`
  rust: sync: atomic: Add fetch_sub()
  ...
2026-04-14 12:36:25 -07:00
Linus Torvalds
f21f7b5162 Update to the VDSO subsystem:
- Make the handling of compat functions consistent and more robust
 
      - Rework the underlying data store so that it is dynamically
        allocated, which allows the conversion of the last holdout SPARC64
        to the generic VDSO implementation
 
      - Rework the SPARC64 VDSO to utilize the generic implementation
 
      - Mop up the left overs of the non-generic VDSO support in the core
        code.
 
      - Expand the VDSO selftest and make them more robust
 
      - Allow time namespaces to be enabled independently of the generic
        VDSO support, which was not possible before due to SPARC64 not
        using it.
 
      - Various cleanups and improvements in the related code.
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Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull vdso updates from Thomas Gleixner:

 - Make the handling of compat functions consistent and more robust

 - Rework the underlying data store so that it is dynamically allocated,
   which allows the conversion of the last holdout SPARC64 to the
   generic VDSO implementation

 - Rework the SPARC64 VDSO to utilize the generic implementation

 - Mop up the left overs of the non-generic VDSO support in the core
   code

 - Expand the VDSO selftest and make them more robust

 - Allow time namespaces to be enabled independently of the generic VDSO
   support, which was not possible before due to SPARC64 not using it

 - Various cleanups and improvements in the related code

* tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
  timens: Use task_lock guard in timens_get*()
  timens: Use mutex guard in proc_timens_set_offset()
  timens: Simplify some calls to put_time_ns()
  timens: Add a __free() wrapper for put_time_ns()
  timens: Remove dependency on the vDSO
  vdso/timens: Move functions to new file
  selftests: vDSO: vdso_test_correctness: Add a test for time()
  selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c
  selftests: vDSO: vdso_test_correctness: Handle different tv_usec types
  selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks
  selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks
  Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers"
  random: vDSO: Remove ifdeffery
  random: vDSO: Trim vDSO includes
  vdso/datapage: Trim down unnecessary includes
  vdso/datapage: Remove inclusion of gettimeofday.h
  vdso/helpers: Explicitly include vdso/processor.h
  vdso/gettimeofday: Add explicit includes
  random: vDSO: Add explicit includes
  MIPS: vdso: Explicitly include asm/vdso/vdso.h
  ...
2026-04-14 10:53:44 -07:00
Krzysztof Kozlowski
41d7004ab4 TI K3 device tree updates for v7.1 part2
Late addition:
 - Use memory-region-names for r5f across K3 SoCs
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Merge tag 'ti-k3-dt-for-v7.1-part2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/ti/linux into soc/dt

TI K3 device tree updates for v7.1 part2

Late addition:
- Use memory-region-names for r5f across K3 SoCs

* tag 'ti-k3-dt-for-v7.1-part2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/ti/linux:
  arm64: dts: ti: k3: Use memory-region-names for r5f

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2026-04-14 18:43:28 +02:00
Linus Torvalds
5d0d362330 Kbuild/Kconfig updates for 7.1
Kbuild changes
 ==============
 
   * tools/build: Reject unexpected values for LLVM=
 
   * kbuild: uapi: remove usage of toolchain headers
 
   * kbuild: Switch from '-fms-extensions' to '-fms-anonymous-structs'
     when available (currently: clang >= 23.0.0)
 
   * kbuild: Reduce the number of compiler-generated suffixes for clang
     thin-lto build
 
   * kbuild: reduce output spam ("GEN Makefile") when building out of tree
 
   * check-uapi: improve portability for testing headers
 
   * uapi: also test UAPI headers against C++ compilers
 
   * kbuild: vdso_install: drop build ID architecture allow-list
 
   * checksyscalls: only run when necessary
 
   * Documentation: kbuild: Update the debug information notes in
     reproducible-builds.rst
 
   * kconfig: forbid multiple entries with the same symbol in a choice
 
   * kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain
 
 Kconfig changes
 ===============
 
   * kconfig: Error out on duplicated kconfig inclusion
 
 Cc: Alexander Coffin <alex@cyberialabs.net>
 Cc: Ard Biesheuvel <ardb@kernel.org>
 Cc: Arnd Bergmann <arnd@arndb.de>
 Cc: Bill Wendling <morbo@google.com>
 Cc: David Howells <dhowells@redhat.com>
 Cc: Dodji Seketeli <dodji@seketeli.org>
 Cc: H. Peter Anvin <hpa@zytor.com>
 Cc: Helge Deller <deller@gmx.de>
 Cc: John Moon <john@jmoon.dev>
 Cc: Jonathan Corbet <corbet@lwn.net>
 Cc: Josh Poimboeuf <jpoimboe@kernel.org>
 Cc: Justin Stitt <justinstitt@google.com>
 Cc: Kees Cook <kees@kernel.org>
 Cc: Masahiro Yamada <masahiroy@kernel.org>
 Cc: Nathan Chancellor <nathan@kernel.org>
 Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com>
 Cc: Shuah Khan <skhan@linuxfoundation.org>
 Cc: Song Liu <song@kernel.org>
 Cc: Thomas Weißschuh <linux@weissschuh.net>
 Cc: Yonghong Song <yonghong.song@linux.dev>
 Cc: kernel-team@fb.com
 Cc: linux-arm-kernel@lists.infradead.org
 Cc: linux-efi@vger.kernel.org
 Cc: linux-hexagon@vger.kernel.org
 Cc: linux-kbuild@vger.kernel.org
 Cc: linux-kernel@vger.kernel.org
 Cc: linux-parisc@vger.kernel.org
 Cc: linux-s390@vger.kernel.org
 Cc: linuxppc-dev@lists.ozlabs.org
 Cc: llvm@lists.linux.dev
 Cc: loongarch@lists.linux.dev
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Merge tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild/Kconfig updates from Nicolas Schier:
 "Kbuild:
   - reject unexpected values for LLVM=
   - uapi: remove usage of toolchain headers
   - switch from '-fms-extensions' to '-fms-anonymous-structs' when
     available (currently: clang >= 23.0.0)
   - reduce the number of compiler-generated suffixes for clang thin-lto
     build
   - reduce output spam ("GEN Makefile") when building out of tree
   - improve portability for testing headers
   - also test UAPI headers against C++ compilers
   - drop build ID architecture allow-list in vdso_install
   - only run checksyscalls when necessary
   - update the debug information notes in reproducible-builds.rst
   - expand inlining hints with -fdiagnostics-show-inlining-chain

  Kconfig:
   - forbid multiple entries with the same symbol in a choice
   - error out on duplicated kconfig inclusion"

* tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (35 commits)
  kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain
  kconfig: forbid multiple entries with the same symbol in a choice
  Documentation: kbuild: Update the debug information notes in reproducible-builds.rst
  checksyscalls: move instance functionality into generic code
  checksyscalls: only run when necessary
  checksyscalls: fail on all intermediate errors
  checksyscalls: move path to reference table to a variable
  kbuild: vdso_install: drop build ID architecture allow-list
  kbuild: vdso_install: gracefully handle images without build ID
  kbuild: vdso_install: hide readelf warnings
  kbuild: vdso_install: split out the readelf invocation
  kbuild: uapi: also test UAPI headers against C++ compilers
  kbuild: uapi: provide a C++ compatible dummy definition of NULL
  kbuild: uapi: handle UML in architecture-specific exclusion lists
  kbuild: uapi: move all include path flags together
  kbuild: uapi: move some compiler arguments out of the command definition
  check-uapi: use dummy libc includes
  check-uapi: honor ${CROSS_COMPILE} setting
  check-uapi: link into shared objects
  kbuild: reduce output spam when building out of tree
  ...
2026-04-14 09:18:40 -07:00
Mark Brown
680b961ebf arm64/hwcap: Include kernel-hwcap.h in list of generated files
When adding generation for the kernel internal constants for hwcaps the
generated file was not explicitly flagged as such in the build system,
causing it to be regenerated on each build. This wasn't obvious when the
series the change was included in was developed since it was all about
changes that trigger rebuilds anyway.

Fixes: abed23c3c4 ("arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps")
Reported-by: Marek Vasut <marex@nabladev.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2026-04-14 16:23:40 +01:00
Linus Torvalds
2e31b16101 ACPI support updates for 7.1-rc1
- Update maintainers information regarding ACPICA (Rafael Wysocki)
 
  - Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy() (Kees
    Cook)
 
  - Trigger an ordered system power off after encountering a fatal error
    operator in AML (Armin Wolf)
 
  - Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)
 
  - Remove the temporary stop-gap acpi_pptt_cache_v1_full structure from
    the ACPI PPTT parser (Ben Horgan)
 
  - Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
    DeSimone)
 
  - Address multiple assorted issues and clean up the code in the ACPI
    processor idle driver (Huisong Li)
 
  - Replace strlcat() in the ACPI processor idle drive with a better
    alternative (Andy Shevchenko)
 
  - Rearrange and clean up acpi_processor_errata_piix4() (Rafael Wysocki)
 
  - Move reference performance to capabilities and fix an uninitialized
    variable in the ACPI CPPC library (Pengjie Zhang)
 
  - Add support for the Performance Limited Register to the ACPI CPPC
    library (Sumit Gupta)
 
  - Add cppc_get_perf() API to read performance controls, extend
    cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
    library warn on missing mandatory DESIRED_PERF register (Sumit Gupta)
 
  - Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in target
    callbacks to allow it to control performance bounds via standard
    scaling_min_freq and scaling_max_freq sysfs attributes and add sysfs
    documentation for the Performance Limited Register to it (Sumit Gupta)
 
  - Add ACPI support to the platform device interface in the CMOS RTC
    driver, make the ACPI core device enumeration code create a platform
    device for the CMOS RTC, and drop CMOS RTC PNP device support (Rafael
    Wysocki)
 
  - Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
    driver and clean up the CMOS RTC ACPI address space handler (Rafael
    Wysocki)
 
  - Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
    and allow that driver to work without a dedicated IRQ if the ACPI
    alarm is used (Rafael Wysocki)
 
  - Clean up the ACPI TAD driver in various ways and add an RTC class
    device interface, including both the RTC setting/reading and alarm
    timer support, to it (Rafael Wysocki)
 
  - Clean up the ACPI AC and ACPI PAD (processor aggregator device)
    drivers (Rafael Wysocki)
 
  - Rework checking for duplicate video bus devices and consolidate
    pnp.bus_id workarounds handling in the ACPI video bus driver (Rafael
    Wysocki)
 
  - Update the ACPI core device drivers to stop setting acpi_device_name()
    unnecessarily (Rafael Wysocki)
 
  - Rearrange code using acpi_device_class() in the ACPI core device
    drivers and update them to stop setting acpi_device_class()
    unnecessarily (Rafael Wysocki)
 
  - Define ACPI_AC_CLASS in one place (Rafael Wysocki)
 
  - Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver to
    bind to platform devices instead of ACPI devices (Rafael Wysocki)
 
  - Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
    hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
    Feng)
 
  - Consolidate the interface for obtaining a CPU UID from ACPI across
    architectures and use it to address incorrect PCI TPH Steering Tag
    on ARM64 resulting from the invalid assumption that the ACPI
    Processor UID would always be the same as the corresponding logical
    CPU ID in Linux (Chengwen Feng)
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Merge tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI support updates from Rafael Wysocki:
 "These include an update of the CMOS RTC driver and the related ACPI
  and x86 code that, among other things, switches it over to using the
  platform device interface for device binding on x86 instead of the PNP
  device driver interface (which allows the code in question to be
  simplified quite a bit), a major update of the ACPI Time and Alarm
  Device (TAD) driver adding an RTC class device interface to it, and
  updates of core ACPI drivers that remove some unnecessary and not
  really useful code from them.

  Apart from that, two drivers are converted to using the platform
  driver interface for device binding instead of the ACPI driver one,
  which is slated for removal, support for the Performance Limited
  register is added to the ACPI CPPC library and there are some
  janitorial updates of it and the related cpufreq CPPC driver, the ACPI
  processor driver is fixed and cleaned up, and NVIDIA vendor CPER
  record handler is added to the APEI GHES code.

  Also, the interface for obtaining a CPU UID from ACPI is consolidated
  across architectures and used for fixing a problem with the PCI TPH
  Steering Tag on ARM64, there are two updates related to ACPICA, a
  minor ACPI OS Services Layer (OSL) update, and a few assorted updates
  related to ACPI tables parsing.

  Specifics:

   - Update maintainers information regarding ACPICA (Rafael Wysocki)

   - Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()
     (Kees Cook)

   - Trigger an ordered system power off after encountering a fatal
     error operator in AML (Armin Wolf)

   - Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)

   - Remove the temporary stop-gap acpi_pptt_cache_v1_full structure
     from the ACPI PPTT parser (Ben Horgan)

   - Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
     DeSimone)

   - Address multiple assorted issues and clean up the code in the ACPI
     processor idle driver (Huisong Li)

   - Replace strlcat() in the ACPI processor idle drive with a better
     alternative (Andy Shevchenko)

   - Rearrange and clean up acpi_processor_errata_piix4() (Rafael
     Wysocki)

   - Move reference performance to capabilities and fix an uninitialized
     variable in the ACPI CPPC library (Pengjie Zhang)

   - Add support for the Performance Limited Register to the ACPI CPPC
     library (Sumit Gupta)

   - Add cppc_get_perf() API to read performance controls, extend
     cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
     library warn on missing mandatory DESIRED_PERF register (Sumit
     Gupta)

   - Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in
     target callbacks to allow it to control performance bounds via
     standard scaling_min_freq and scaling_max_freq sysfs attributes and
     add sysfs documentation for the Performance Limited Register to it
     (Sumit Gupta)

   - Add ACPI support to the platform device interface in the CMOS RTC
     driver, make the ACPI core device enumeration code create a
     platform device for the CMOS RTC, and drop CMOS RTC PNP device
     support (Rafael Wysocki)

   - Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
     driver and clean up the CMOS RTC ACPI address space handler (Rafael
     Wysocki)

   - Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
     and allow that driver to work without a dedicated IRQ if the ACPI
     alarm is used (Rafael Wysocki)

   - Clean up the ACPI TAD driver in various ways and add an RTC class
     device interface, including both the RTC setting/reading and alarm
     timer support, to it (Rafael Wysocki)

   - Clean up the ACPI AC and ACPI PAD (processor aggregator device)
     drivers (Rafael Wysocki)

   - Rework checking for duplicate video bus devices and consolidate
     pnp.bus_id workarounds handling in the ACPI video bus driver
     (Rafael Wysocki)

   - Update the ACPI core device drivers to stop setting
     acpi_device_name() unnecessarily (Rafael Wysocki)

   - Rearrange code using acpi_device_class() in the ACPI core device
     drivers and update them to stop setting acpi_device_class()
     unnecessarily (Rafael Wysocki)

   - Define ACPI_AC_CLASS in one place (Rafael Wysocki)

   - Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver
     to bind to platform devices instead of ACPI devices (Rafael
     Wysocki)

   - Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
     hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
     Feng)

   - Consolidate the interface for obtaining a CPU UID from ACPI across
     architectures and use it to address incorrect PCI TPH Steering Tag
     on ARM64 resulting from the invalid assumption that the ACPI
     Processor UID would always be the same as the corresponding logical
     CPU ID in Linux (Chengwen Feng)"

* tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (73 commits)
  ACPICA: Update maintainers information
  watchdog: ni903x_wdt: Convert to a platform driver
  ACPI: PAD: xen: Convert to a platform driver
  ACPI: processor: idle: Reset cpuidle on C-state list changes
  cpuidle: Extract and export no-lock variants of cpuidle_unregister_device()
  PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
  ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
  perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu()
  ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
  x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler
  PCI: hisi: Use devm_ghes_register_vendor_record_notifier()
  ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier()
  ACPI: tables: Enable FPDT on LoongArch
  ACPI: processor: idle: Fix NULL pointer dereference in hotplug path
  ACPI: processor: idle: Reset power_setup_done flag on initialization failure
  ACPI: TAD: Add alarm support to the RTC class device interface
  ...
2026-04-13 19:25:07 -07:00
Linus Torvalds
d568788baa hardening updates for v7.1-rc1
- randomize_kstack: Improve implementation across arches (Ryan Roberts)
 
 - lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test
 
 - refcount: Remove unused __signed_wrap function annotations
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Merge tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:

 - randomize_kstack: Improve implementation across arches (Ryan Roberts)

 - lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test

 - refcount: Remove unused __signed_wrap function annotations

* tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test
  refcount: Remove unused __signed_wrap function annotations
  randomize_kstack: Unify random source across arches
  randomize_kstack: Maintain kstack_offset per task
2026-04-13 17:52:29 -07:00
Linus Torvalds
370c388319 Crypto library updates for 7.1
- Migrate more hash algorithms from the traditional crypto subsystem
   to lib/crypto/.
 
   Like the algorithms migrated earlier (e.g. SHA-*), this simplifies
   the implementations, improves performance, enables further
   simplifications in calling code, and solves various other issues:
 
     - AES CBC-based MACs (AES-CMAC, AES-XCBC-MAC, and AES-CBC-MAC)
 
         - Support these algorithms in lib/crypto/ using the AES
           library and the existing arm64 assembly code
 
         - Reimplement the traditional crypto API's "cmac(aes)",
           "xcbc(aes)", and "cbcmac(aes)" on top of the library
 
         - Convert mac80211 to use the AES-CMAC library. Note: several
           other subsystems can use it too and will be converted later
 
         - Drop the broken, nonstandard, and likely unused support for
           "xcbc(aes)" with key lengths other than 128 bits
 
         - Enable optimizations by default
 
     - GHASH
 
         - Migrate the standalone GHASH code into lib/crypto/
 
         - Integrate the GHASH code more closely with the very similar
           POLYVAL code, and improve the generic GHASH implementation
           to resist cache-timing attacks and use much less memory
 
         - Reimplement the AES-GCM library and the "gcm" crypto_aead
           template on top of the GHASH library. Remove "ghash" from
           the crypto_shash API, as it's no longer needed
 
         - Enable optimizations by default
 
     - SM3
 
         - Migrate the kernel's existing SM3 code into lib/crypto/, and
           reimplement the traditional crypto API's "sm3" on top of it
 
         - I don't recommend using SM3, but this cleanup is worthwhile
           to organize the code the same way as other algorithms
 
 - Testing improvements
 
     - Add a KUnit test suite for each of the new library APIs
 
     - Migrate the existing ChaCha20Poly1305 test to KUnit
 
     - Make the KUnit all_tests.config enable all crypto library tests
 
     - Move the test kconfig options to the Runtime Testing menu
 
 - Other updates to arch-optimized crypto code
 
     - Optimize SHA-256 for Zhaoxin CPUs using the Padlock Hash Engine
 
     - Remove some MD5 implementations that are no longer worth keeping
 
     - Drop big endian and voluntary preemption support from the arm64
       code, as those configurations are no longer supported on arm64
 
 - Make jitterentropy and samples/tsm-mr use the crypto library APIs
 
 Note: the overall diffstat is neutral, but when the test code is
 excluded it is significantly negative:
 
     Tests:     13 files changed, 1982 insertions(+),  888 deletions(-)
     Non-test: 141 files changed, 2897 insertions(+), 3987 deletions(-)
     All:      154 files changed, 4879 insertions(+), 4875 deletions(-)
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Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux

Pull crypto library updates from Eric Biggers:

 - Migrate more hash algorithms from the traditional crypto subsystem to
   lib/crypto/

   Like the algorithms migrated earlier (e.g. SHA-*), this simplifies
   the implementations, improves performance, enables further
   simplifications in calling code, and solves various other issues:

     - AES CBC-based MACs (AES-CMAC, AES-XCBC-MAC, and AES-CBC-MAC)

         - Support these algorithms in lib/crypto/ using the AES library
           and the existing arm64 assembly code

         - Reimplement the traditional crypto API's "cmac(aes)",
           "xcbc(aes)", and "cbcmac(aes)" on top of the library

         - Convert mac80211 to use the AES-CMAC library. Note: several
           other subsystems can use it too and will be converted later

         - Drop the broken, nonstandard, and likely unused support for
           "xcbc(aes)" with key lengths other than 128 bits

         - Enable optimizations by default

     - GHASH

         - Migrate the standalone GHASH code into lib/crypto/

         - Integrate the GHASH code more closely with the very similar
           POLYVAL code, and improve the generic GHASH implementation to
           resist cache-timing attacks and use much less memory

         - Reimplement the AES-GCM library and the "gcm" crypto_aead
           template on top of the GHASH library. Remove "ghash" from the
           crypto_shash API, as it's no longer needed

         - Enable optimizations by default

     - SM3

         - Migrate the kernel's existing SM3 code into lib/crypto/, and
           reimplement the traditional crypto API's "sm3" on top of it

         - I don't recommend using SM3, but this cleanup is worthwhile
           to organize the code the same way as other algorithms

 - Testing improvements:

     - Add a KUnit test suite for each of the new library APIs

     - Migrate the existing ChaCha20Poly1305 test to KUnit

     - Make the KUnit all_tests.config enable all crypto library tests

     - Move the test kconfig options to the Runtime Testing menu

 - Other updates to arch-optimized crypto code:

     - Optimize SHA-256 for Zhaoxin CPUs using the Padlock Hash Engine

     - Remove some MD5 implementations that are no longer worth keeping

     - Drop big endian and voluntary preemption support from the arm64
       code, as those configurations are no longer supported on arm64

 - Make jitterentropy and samples/tsm-mr use the crypto library APIs

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (66 commits)
  lib/crypto: arm64: Assume a little-endian kernel
  arm64: fpsimd: Remove obsolete cond_yield macro
  lib/crypto: arm64/sha3: Remove obsolete chunking logic
  lib/crypto: arm64/sha512: Remove obsolete chunking logic
  lib/crypto: arm64/sha256: Remove obsolete chunking logic
  lib/crypto: arm64/sha1: Remove obsolete chunking logic
  lib/crypto: arm64/poly1305: Remove obsolete chunking logic
  lib/crypto: arm64/gf128hash: Remove obsolete chunking logic
  lib/crypto: arm64/chacha: Remove obsolete chunking logic
  lib/crypto: arm64/aes: Remove obsolete chunking logic
  lib/crypto: Include <crypto/utils.h> instead of <crypto/algapi.h>
  lib/crypto: aesgcm: Don't disable IRQs during AES block encryption
  lib/crypto: aescfb: Don't disable IRQs during AES block encryption
  lib/crypto: tests: Migrate ChaCha20Poly1305 self-test to KUnit
  lib/crypto: sparc: Drop optimized MD5 code
  lib/crypto: mips: Drop optimized MD5 code
  lib: Move crypto library tests to Runtime Testing menu
  crypto: sm3 - Remove 'struct sm3_state'
  crypto: sm3 - Remove the original "sm3_block_generic()"
  crypto: sm3 - Remove sm3_base.h
  ...
2026-04-13 17:31:39 -07:00
Linus Torvalds
ef3da345cc vfs-7.1-rc1.misc
Please consider pulling these changes from the signed vfs-7.1-rc1.misc tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
 "Features:
   - coredump: add tracepoint for coredump events
   - fs: hide file and bfile caches behind runtime const machinery

  Fixes:
   - fix architecture-specific compat_ftruncate64 implementations
   - dcache: Limit the minimal number of bucket to two
   - fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START
   - fs/mbcache: cancel shrink work before destroying the cache
   - dcache: permit dynamic_dname()s up to NAME_MAX

  Cleanups:
   - remove or unexport unused fs_context infrastructure
   - trivial ->setattr cleanups
   - selftests/filesystems: Assume that TIOCGPTPEER is defined
   - writeback: fix kernel-doc function name mismatch for wb_put_many()
   - autofs: replace manual symlink buffer allocation in autofs_dir_symlink
   - init/initramfs.c: trivial fix: FSM -> Finite-state machine
   - fs: remove stale and duplicate forward declarations
   - readdir: Introduce dirent_size()
   - fs: Replace user_access_{begin/end} by scoped user access
   - kernel: acct: fix duplicate word in comment
   - fs: write a better comment in step_into() concerning .mnt assignment
   - fs: attr: fix comment formatting and spelling issues"

* tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits)
  dcache: permit dynamic_dname()s up to NAME_MAX
  fs: attr: fix comment formatting and spelling issues
  fs: hide file and bfile caches behind runtime const machinery
  fs: write a better comment in step_into() concerning .mnt assignment
  proc: rename proc_notify_change to proc_setattr
  proc: rename proc_setattr to proc_nochmod_setattr
  affs: rename affs_notify_change to affs_setattr
  adfs: rename adfs_notify_change to adfs_setattr
  hfs: update comments on hfs_inode_setattr
  kernel: acct: fix duplicate word in comment
  fs: Replace user_access_{begin/end} by scoped user access
  readdir: Introduce dirent_size()
  coredump: add tracepoint for coredump events
  fs: remove do_sys_truncate
  fs: pass on FTRUNCATE_* flags to do_truncate
  fs: fix archiecture-specific compat_ftruncate64
  fs: remove stale and duplicate forward declarations
  init/initramfs.c: trivial fix: FSM -> Finite-state machine
  autofs: replace manual symlink buffer allocation in autofs_dir_symlink
  fs/mbcache: cancel shrink work before destroying the cache
  ...
2026-04-13 14:20:11 -07:00
Linus Torvalds
26ff969926 Rust changes for v7.1
Toolchain and infrastructure:
 
  - Bump the minimum Rust version to 1.85.0 (and 'bindgen' to 0.71.1).
 
    As proposed in LPC 2025 and the Maintainers Summit [1], we are going
    to follow Debian Stable's Rust versions as our minimum versions.
 
    Debian Trixie was released on 2025-08-09 with a Rust 1.85.0 and
    'bindgen' 0.71.1 toolchain, which is a fair amount of time for e.g.
    kernel developers to upgrade.
 
    Other major distributions support a Rust version that is high enough
    as well, including:
 
      + Arch Linux.
      + Fedora Linux.
      + Gentoo Linux.
      + Nix.
      + openSUSE Slowroll and openSUSE Tumbleweed.
      + Ubuntu 25.10 and 26.04 LTS. In addition, 24.04 LTS using
        their versioned packages.
 
    The merged patch series comes with the associated cleanups and
    simplifications treewide that can be performed thanks to both bumps,
    as well as documentation updates.
 
    In addition, start using 'bindgen''s '--with-attribute-custom-enum'
    feature to set the 'cfi_encoding' attribute for the 'lru_status' enum
    used in Binder.
 
    Link: https://lwn.net/Articles/1050174/ [1]
 
  - Add experimental Kconfig option ('CONFIG_RUST_INLINE_HELPERS') that
    inlines C helpers into Rust.
 
    Essentially, it performs a step similar to LTO, but just for the
    helpers, i.e. very local and fast.
 
    It relies on 'llvm-link' and its '--internalize' flag, and requires
    a compatible LLVM between Clang and 'rustc' (i.e. same major version,
    'CONFIG_RUSTC_CLANG_LLVM_COMPATIBLE'). It is only enabled for two
    architectures for now.
 
    The result is a measurable speedup in different workloads that
    different users have tested. For instance, for the null block driver,
    it amounts to a 2%.
 
  - Support global per-version flags.
 
    While we already have per-version flags in many places, we didn't
    have a place to set global ones that depend on the compiler version,
    i.e. in 'rust_common_flags', which sometimes is needed to e.g. tweak
    the lints set per version.
 
    Use that to allow the 'clippy::precedence' lint for Rust < 1.86.0,
    since it had a change in behavior.
 
  - Support overriding the crate name and apply it to Rust Binder, which
    wanted the module to be called 'rust_binder'.
 
  - Add the remaining '__rust_helper' annotations (started in the
    previous cycle).
 
 'kernel' crate:
 
  - Introduce the 'const_assert!' macro: a more powerful version of
    'static_assert!' that can refer to generics inside functions or
    implementation bodies, e.g.:
 
        fn f<const N: usize>() {
            const_assert!(N > 1);
        }
 
        fn g<T>() {
            const_assert!(size_of::<T>() > 0, "T cannot be ZST");
        }
 
    In addition, reorganize our set of build-time assertion macros
    ('{build,const,static_assert}!') to live in the 'build_assert'
    module.
 
    Finally, improve the docs as well to clarify how these are different
    from one another and how to pick the right one to use, and their
    equivalence (if any) to the existing C ones for extra clarity.
 
  - 'sizes' module: add 'SizeConstants' trait.
 
    This gives us typed 'SZ_*' constants (avoiding casts) for use in
    device address spaces where the address width depends on the hardware
    (e.g. 32-bit MMIO windows, 64-bit GPU framebuffers, etc.), e.g.:
 
        let gpu_heap = 14 * u64::SZ_1M;
        let mmio_window = u32::SZ_16M;
 
  - 'clk' module: implement 'Send' and 'Sync' for 'Clk' and thus simplify
    the users in Tyr and PWM.
 
  - 'ptr' module: add 'const_align_up'.
 
  - 'str' module: improve the documentation of the 'c_str!' macro to
    explain that one should only use it for non-literal cases (for the
    other case we instead use C string literals, e.g. 'c"abc"').
 
  - Disallow the use of 'CStr::{as_ptr,from_ptr}' and clean one such use
    in the 'task' module.
 
  - 'sync' module: finish the move of 'ARef' and 'AlwaysRefCounted'
    outside of the 'types' module, i.e. update the last remaining
    instances and finally remove the re-exports.
 
  - 'error' module: clarify that 'from_err_ptr' can return 'Ok(NULL)',
    including runtime-tested examples.
 
    The intention is to hopefully prevent UB that assumes the result of
    the function is not 'NULL' if successful. This originated from a case
    of UB I noticed in 'regulator' that created a 'NonNull' on it.
 
 Timekeeping:
 
  - Expand the example section in the 'HrTimer' documentation.
 
  - Mark the 'ClockSource' trait as unsafe to ensure valid values for
    'ktime_get()'.
 
  - Add 'Delta::from_nanos()'.
 
 'pin-init' crate:
 
  - Replace the 'Zeroable' impls for 'Option<NonZero*>' with impls of
    'ZeroableOption' for 'NonZero*'.
 
  - Improve feature gate handling for unstable features.
 
  - Declutter the documentation of implementations of 'Zeroable' for
    tuples.
 
  - Replace uses of 'addr_of[_mut]!' with '&raw [mut]'.
 
 rust-analyzer:
 
  - Add type annotations to 'generate_rust_analyzer.py'.
 
  - Add support for scripts written in Rust ('generate_rust_target.rs',
    'rustdoc_test_builder.rs', 'rustdoc_test_gen.rs').
 
  - Refactor 'generate_rust_analyzer.py' to explicitly identify host and
    target crates, improve readability, and reduce duplication.
 
 And some other fixes, cleanups and improvements.
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Merge tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull Rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Bump the minimum Rust version to 1.85.0 (and 'bindgen' to 0.71.1).

     As proposed in LPC 2025 and the Maintainers Summit [1], we are
     going to follow Debian Stable's Rust versions as our minimum
     versions.

     Debian Trixie was released on 2025-08-09 with a Rust 1.85.0 and
     'bindgen' 0.71.1 toolchain, which is a fair amount of time for e.g.
     kernel developers to upgrade.

     Other major distributions support a Rust version that is high
     enough as well, including:

       + Arch Linux.
       + Fedora Linux.
       + Gentoo Linux.
       + Nix.
       + openSUSE Slowroll and openSUSE Tumbleweed.
       + Ubuntu 25.10 and 26.04 LTS. In addition, 24.04 LTS using
         their versioned packages.

     The merged patch series comes with the associated cleanups and
     simplifications treewide that can be performed thanks to both
     bumps, as well as documentation updates.

     In addition, start using 'bindgen''s '--with-attribute-custom-enum'
     feature to set the 'cfi_encoding' attribute for the 'lru_status'
     enum used in Binder.

     Link: https://lwn.net/Articles/1050174/ [1]

   - Add experimental Kconfig option ('CONFIG_RUST_INLINE_HELPERS') that
     inlines C helpers into Rust.

     Essentially, it performs a step similar to LTO, but just for the
     helpers, i.e. very local and fast.

     It relies on 'llvm-link' and its '--internalize' flag, and requires
     a compatible LLVM between Clang and 'rustc' (i.e. same major
     version, 'CONFIG_RUSTC_CLANG_LLVM_COMPATIBLE'). It is only enabled
     for two architectures for now.

     The result is a measurable speedup in different workloads that
     different users have tested. For instance, for the null block
     driver, it amounts to a 2%.

   - Support global per-version flags.

     While we already have per-version flags in many places, we didn't
     have a place to set global ones that depend on the compiler
     version, i.e. in 'rust_common_flags', which sometimes is needed to
     e.g. tweak the lints set per version.

     Use that to allow the 'clippy::precedence' lint for Rust < 1.86.0,
     since it had a change in behavior.

   - Support overriding the crate name and apply it to Rust Binder,
     which wanted the module to be called 'rust_binder'.

   - Add the remaining '__rust_helper' annotations (started in the
     previous cycle).

  'kernel' crate:

   - Introduce the 'const_assert!' macro: a more powerful version of
     'static_assert!' that can refer to generics inside functions or
     implementation bodies, e.g.:

         fn f<const N: usize>() {
             const_assert!(N > 1);
         }

         fn g<T>() {
             const_assert!(size_of::<T>() > 0, "T cannot be ZST");
         }

     In addition, reorganize our set of build-time assertion macros
     ('{build,const,static_assert}!') to live in the 'build_assert'
     module.

     Finally, improve the docs as well to clarify how these are
     different from one another and how to pick the right one to use,
     and their equivalence (if any) to the existing C ones for extra
     clarity.

   - 'sizes' module: add 'SizeConstants' trait.

     This gives us typed 'SZ_*' constants (avoiding casts) for use in
     device address spaces where the address width depends on the
     hardware (e.g. 32-bit MMIO windows, 64-bit GPU framebuffers, etc.),
     e.g.:

         let gpu_heap = 14 * u64::SZ_1M;
         let mmio_window = u32::SZ_16M;

   - 'clk' module: implement 'Send' and 'Sync' for 'Clk' and thus
     simplify the users in Tyr and PWM.

   - 'ptr' module: add 'const_align_up'.

   - 'str' module: improve the documentation of the 'c_str!' macro to
     explain that one should only use it for non-literal cases (for the
     other case we instead use C string literals, e.g. 'c"abc"').

   - Disallow the use of 'CStr::{as_ptr,from_ptr}' and clean one such
     use in the 'task' module.

   - 'sync' module: finish the move of 'ARef' and 'AlwaysRefCounted'
     outside of the 'types' module, i.e. update the last remaining
     instances and finally remove the re-exports.

   - 'error' module: clarify that 'from_err_ptr' can return 'Ok(NULL)',
     including runtime-tested examples.

     The intention is to hopefully prevent UB that assumes the result of
     the function is not 'NULL' if successful. This originated from a
     case of UB I noticed in 'regulator' that created a 'NonNull' on it.

  Timekeeping:

   - Expand the example section in the 'HrTimer' documentation.

   - Mark the 'ClockSource' trait as unsafe to ensure valid values for
     'ktime_get()'.

   - Add 'Delta::from_nanos()'.

  'pin-init' crate:

   - Replace the 'Zeroable' impls for 'Option<NonZero*>' with impls of
     'ZeroableOption' for 'NonZero*'.

   - Improve feature gate handling for unstable features.

   - Declutter the documentation of implementations of 'Zeroable' for
     tuples.

   - Replace uses of 'addr_of[_mut]!' with '&raw [mut]'.

  rust-analyzer:

   - Add type annotations to 'generate_rust_analyzer.py'.

   - Add support for scripts written in Rust ('generate_rust_target.rs',
     'rustdoc_test_builder.rs', 'rustdoc_test_gen.rs').

   - Refactor 'generate_rust_analyzer.py' to explicitly identify host
     and target crates, improve readability, and reduce duplication.

  And some other fixes, cleanups and improvements"

* tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (79 commits)
  rust: sizes: add SizeConstants trait for device address space constants
  rust: kernel: update `file_with_nul` comment
  rust: kbuild: allow `clippy::precedence` for Rust < 1.86.0
  rust: kbuild: support global per-version flags
  rust: declare cfi_encoding for lru_status
  docs: rust: general-information: use real example
  docs: rust: general-information: simplify Kconfig example
  docs: rust: quick-start: remove GDB/Binutils mention
  docs: rust: quick-start: remove Nix "unstable channel" note
  docs: rust: quick-start: remove Gentoo "testing" note
  docs: rust: quick-start: add Ubuntu 26.04 LTS and remove subsection title
  docs: rust: quick-start: update minimum Ubuntu version
  docs: rust: quick-start: update Ubuntu versioned packages
  docs: rust: quick-start: openSUSE provides `rust-src` package nowadays
  rust: kbuild: remove "dummy parameter" workaround for `bindgen` < 0.71.1
  rust: kbuild: update `bindgen --rust-target` version and replace comment
  rust: rust_is_available: remove warning for `bindgen` < 0.69.5 && libclang >= 19.1
  rust: rust_is_available: remove warning for `bindgen` 0.66.[01]
  rust: bump `bindgen` minimum supported version to 0.71.1 (Debian Trixie)
  rust: block: update `const_refs_to_static` MSRV TODO comment
  ...
2026-04-13 09:54:20 -07:00
Linus Torvalds
fdcbb1bc06 Merge branch 'nocache-cleanup'
This series cleans up some of the special user copy functions naming and
semantics.  In particular, get rid of the (very traditional) double
underscore names and behavior: the whole "optimize away the range check"
model has been largely excised from the other user accessors because
it's so subtle and can be unsafe, but also because it's just not a
relevant optimization any more.

To do that, a couple of drivers that misused the "user" copies as kernel
copies in order to get non-temporal stores had to be fixed up, but that
kind of code should never have been allowed anyway.

The x86-only "nocache" version was also renamed to more accurately
reflect what it actually does.

This was all done because I looked at this code due to a report by Jann
Horn, and I just couldn't stand the inconsistent naming, the horrible
semantics, and the random misuse of these functions.  This code should
probably be cleaned up further, but it's at least slightly closer to
normal semantics.

I had a more intrusive series that went even further in trying to
normalize the semantics, but that ended up hitting so many other
inconsistencies between different architectures in this area (eg
'size_t' vs 'unsigned long' vs 'int' as size arguments, and various
iovec check differences that Vasily Gorbik pointed out) that I ended up
with this more limited version that fixed the worst of the issues.

Reported-by: Jann Horn <jannh@google.com>
Tested-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/all/CAHk-=wgg1QVWNWG-UCFo1hx0zqrPnB3qhPzUTrWNft+MtXQXig@mail.gmail.com/

* nocache-cleanup:
  x86-64/arm64/powerpc: clean up and rename __copy_from_user_flushcache
  x86: rename and clean up __copy_from_user_inatomic_nocache()
  x86-64: rename misleadingly named '__copy_user_nocache()' function
2026-04-13 08:39:51 -07:00
Paolo Bonzini
e74c3a8891 KVM/arm64 updates for 7.1
* New features:
 
 - Add support for tracing in the standalone EL2 hypervisor code,
   which should help both debugging and performance analysis.
   This comes with a full infrastructure for 'remote' trace buffers
   that can be exposed by non-kernel entities such as firmware.
 
 - Add support for GICv5 Per Processor Interrupts (PPIs), as the
   starting point for supporting the new GIC architecture in KVM.
 
 - Finally add support for pKVM protected guests, with anonymous
   memory being used as a backing store. About time!
 
 * Improvements and bug fixes:
 
 - Rework the dreaded user_mem_abort() function to make it more
   maintainable, reducing the amount of state being exposed to
   the various helpers and rendering a substantial amount of
   state immutable.
 
 - Expand the Stage-2 page table dumper to support NV shadow
   page tables on a per-VM basis.
 
 - Tidy up the pKVM PSCI proxy code to be slightly less hard
   to follow.
 
 - Fix both SPE and TRBE in non-VHE configurations so that they
   do not generate spurious, out of context table walks that
   ultimately lead to very bad HW lockups.
 
 - A small set of patches fixing the Stage-2 MMU freeing in error
   cases.
 
 - Tighten-up accepted SMC immediate value to be only #0 for host
   SMCCC calls.
 
 - The usual cleanups and other selftest churn.
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Merge tag 'kvmarm-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for 7.1

* New features:

- Add support for tracing in the standalone EL2 hypervisor code,
  which should help both debugging and performance analysis.
  This comes with a full infrastructure for 'remote' trace buffers
  that can be exposed by non-kernel entities such as firmware.

- Add support for GICv5 Per Processor Interrupts (PPIs), as the
  starting point for supporting the new GIC architecture in KVM.

- Finally add support for pKVM protected guests, with anonymous
  memory being used as a backing store. About time!

* Improvements and bug fixes:

- Rework the dreaded user_mem_abort() function to make it more
  maintainable, reducing the amount of state being exposed to
  the various helpers and rendering a substantial amount of
  state immutable.

- Expand the Stage-2 page table dumper to support NV shadow
  page tables on a per-VM basis.

- Tidy up the pKVM PSCI proxy code to be slightly less hard
  to follow.

- Fix both SPE and TRBE in non-VHE configurations so that they
  do not generate spurious, out of context table walks that
  ultimately lead to very bad HW lockups.

- A small set of patches fixing the Stage-2 MMU freeing in error
  cases.

- Tighten-up accepted SMC immediate value to be only #0 for host
  SMCCC calls.

- The usual cleanups and other selftest churn.
2026-04-13 11:49:54 +02:00
Jakub Kicinski
118cbd428e Final updates, notably:
- crypto: move Michael MIC code into wireless (only)
  - mac80211:
    - multi-link 4-addr support
    - NAN data support (but no drivers yet)
  - ath10k: DT quirk to make it work on some devices
  - ath12k: IPQ5424 support
  - rtw89: USB improvements for performance
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Merge tag 'wireless-next-2026-04-10' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
Final updates, notably:
 - crypto: move Michael MIC code into wireless (only)
 - mac80211:
   - multi-link 4-addr support
   - NAN data support (but no drivers yet)
 - ath10k: DT quirk to make it work on some devices
 - ath12k: IPQ5424 support
 - rtw89: USB improvements for performance

* tag 'wireless-next-2026-04-10' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (124 commits)
  wifi: cfg80211: Explicitly include <linux/export.h> in michael-mic.c
  wifi: ath10k: Add device-tree quirk to skip host cap QMI requests
  dt-bindings: wireless: ath10k: Add quirk to skip host cap QMI requests
  crypto: Remove michael_mic from crypto_shash API
  wifi: ipw2x00: Use michael_mic() from cfg80211
  wifi: ath12k: Use michael_mic() from cfg80211
  wifi: ath11k: Use michael_mic() from cfg80211
  wifi: mac80211, cfg80211: Export michael_mic() and move it to cfg80211
  wifi: ipw2x00: Rename michael_mic() to libipw_michael_mic()
  wifi: libertas_tf: refactor endpoint lookup
  wifi: libertas: refactor endpoint lookup
  wifi: at76c50x: refactor endpoint lookup
  wifi: ath12k: Enable IPQ5424 WiFi device support
  wifi: ath12k: Add CE remap hardware parameters for IPQ5424
  wifi: ath12k: add ath12k_hw_regs for IPQ5424
  wifi: ath12k: add ath12k_hw_version_map entry for IPQ5424
  wifi: ath12k: Add ath12k_hw_params for IPQ5424
  dt-bindings: net: wireless: add ath12k wifi device IPQ5424
  wifi: ath10k: fix station lookup failure during disconnect
  wifi: ath12k: Create symlink for each radio in a wiphy
  ...
====================

Link: https://patch.msgid.link/20260410064703.735099-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-12 09:17:42 -07:00
Krzysztof Kozlowski
2bb665a217 Allwinner Device Tree Changes for 7.1 - Part 2
UART DMA channels added for A64 and H6. Standard resolution MMIO timer added
 for H616. This timer can be used as a broadcast timer for wakeup from idle
 states.
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Merge tag 'sunxi-dt-for-7.1-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into soc/dt

Allwinner Device Tree Changes for 7.1 - Part 2

UART DMA channels added for A64 and H6. Standard resolution MMIO timer added
for H616. This timer can be used as a broadcast timer for wakeup from idle
states.

* tag 'sunxi-dt-for-7.1-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: dts: allwinner: enable h616 timer support
  arm64: dts: allwinner: sun50i-h6: add UART DMA channels
  arm64: dts: allwinner: sun50i-a64: add UART DMA channels

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2026-04-11 10:42:27 +02:00
Krzysztof Kozlowski
b7e1557eb6 A few more Arm64 DeviceTree updates for v7.1
Introduce the Hamoa-based Lenovo IdeaCentre Mini X, the Dragonwing
 IQ-615 (Talos) EVK, and a Talos EVK camera overlay.
 
 Enable DisplayPort support on the Glymur CRD.
 
 Add WiFi, Bluetooh, LEDs, and venus on LG-based SDM845 devices. Add
 battery, charger, and display on the LG G7 ThinQ.
 
 Enable SD-card, describe the audio amplifier, and increase the speed of
 the i2c clock for touchscreen on the SHIFT SHIFT6mq.
 
 Add camera subsystem, camera control interface, GPU, GMU, and GPU
 cooling on the Talos platform. Enable the GPU on the Ride board.
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Merge tag 'qcom-arm64-for-7.1-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/dt

A few more Arm64 DeviceTree updates for v7.1

Introduce the Hamoa-based Lenovo IdeaCentre Mini X, the Dragonwing
IQ-615 (Talos) EVK, and a Talos EVK camera overlay.

Enable DisplayPort support on the Glymur CRD.

Add WiFi, Bluetooh, LEDs, and venus on LG-based SDM845 devices. Add
battery, charger, and display on the LG G7 ThinQ.

Enable SD-card, describe the audio amplifier, and increase the speed of
the i2c clock for touchscreen on the SHIFT SHIFT6mq.

Add camera subsystem, camera control interface, GPU, GMU, and GPU
cooling on the Talos platform. Enable the GPU on the Ride board.

* tag 'qcom-arm64-for-7.1-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (31 commits)
  arm64: dts: qcom: Add the Lenovo IdeaCentre Mini X
  dt-bindings: arm: qcom: Document the Lenovo IdeaCentre Mini X
  arm64: dts: qcom: sdm845-shift-axolotl: Enable TFA9890 codec
  arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock
  arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard
  arm64: dts: qcom: talos: Add clocks for QoS configuration
  arm64: dts: qcom: talos-evk-camera: Add DT overlay
  arm64: dts: qcom: talos: Add camera MCLK pinctrl
  arm64: dts: qcom: talos: Add CCI definitions
  arm64: dts: qcom: talos: Add camss node
  arm64: dts: qcom: talos: Add EL2 overlay
  arm64: dts: qcom: talos-evk: Add support for QCS615 talos evk board
  arm64: dts: qcom: talos/qcs615-ride: Fix inconsistent USB PHY node naming
  dt-bindings: arm: qcom: talos-evk: Add QCS615 Talos EVK SMARC platform
  arm64: dts: qcom: qcs615-ride: Enable Adreno 612 GPU
  arm64: dts: qcom: talos: Add GPU cooling
  arm64: dts: qcom: talos: Add gpu and rgmu nodes
  arm64: dts: qcom: talos: add the GPU SMMU node
  arm64: dts: qcom: sdm845-lg-common: Add chassis-type
  arm64: dts: qcom: sdm845-lg: Add wifi nodes
  ...

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2026-04-11 10:36:04 +02:00