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164,483 commits

Author SHA1 Message Date
Linus Torvalds
4a1d8ababd RISC-V Patches for the 6.15 Merge Window, Part 1
* The sub-architecture selection Kconfig system has been cleaned up,
   the documentation has been improved, and various detections have been
   fixed.
 * The vector-related extensions dependencies are now validated when
   parsing from device tree and in the DT bindings.
 * Misaligned access probing can be overridden via a kernel command-line
   parameter, along with various fixes to misalign access handling.
 * Support for relocatable !MMU kernels builds.
 * Support for hpge pfnmaps, which should improve TLB utilization.
 * Support for runtime constants, which improves the d_hash()
   performance.
 * Support for bfloat16, Zicbom, Zaamo, Zalrsc, Zicntr, Zihpm.
 * Various fixes, including:
       - We were missing a secondary mmu notifier call when flushing the
 	tlb which is required for IOMMU.
       - Fix ftrace panics by saving the registers as expected by ftrace.
       - Fix a couple of stimecmp usage related to cpu hotplug.
       - purgatory_start is now aligned as per the STVEC requirements.
       - A fix for hugetlb when calculating the size of non-present PTEs.
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Merge tag 'riscv-for-linus-6.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - The sub-architecture selection Kconfig system has been cleaned up,
   the documentation has been improved, and various detections have been
   fixed

 - The vector-related extensions dependencies are now validated when
   parsing from device tree and in the DT bindings

 - Misaligned access probing can be overridden via a kernel command-line
   parameter, along with various fixes to misalign access handling

 - Support for relocatable !MMU kernels builds

 - Support for hpge pfnmaps, which should improve TLB utilization

 - Support for runtime constants, which improves the d_hash()
   performance

 - Support for bfloat16, Zicbom, Zaamo, Zalrsc, Zicntr, Zihpm

 - Various fixes, including:
      - We were missing a secondary mmu notifier call when flushing the
        tlb which is required for IOMMU
      - Fix ftrace panics by saving the registers as expected by ftrace
      - Fix a couple of stimecmp usage related to cpu hotplug
      - purgatory_start is now aligned as per the STVEC requirements
      - A fix for hugetlb when calculating the size of non-present PTEs

* tag 'riscv-for-linus-6.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (65 commits)
  riscv: Add norvc after .option arch in runtime const
  riscv: Make sure toolchain supports zba before using zba instructions
  riscv/purgatory: 4B align purgatory_start
  riscv/kexec_file: Handle R_RISCV_64 in purgatory relocator
  selftests: riscv: fix v_exec_initval_nolibc.c
  riscv: Fix hugetlb retrieval of number of ptes in case of !present pte
  riscv: print hartid on bringup
  riscv: Add norvc after .option arch in runtime const
  riscv: Remove CONFIG_PAGE_OFFSET
  riscv: Support CONFIG_RELOCATABLE on riscv32
  asm-generic: Always define Elf_Rel and Elf_Rela
  riscv: Support CONFIG_RELOCATABLE on NOMMU
  riscv: Allow NOMMU kernels to access all of RAM
  riscv: Remove duplicate CONFIG_PAGE_OFFSET definition
  RISC-V: errata: Use medany for relocatable builds
  dt-bindings: riscv: document vector crypto requirements
  dt-bindings: riscv: add vector sub-extension dependencies
  dt-bindings: riscv: d requires f
  RISC-V: add f & d extension validation checks
  RISC-V: add vector crypto extension validation checks
  ...
2025-04-04 09:49:17 -07:00
Linus Torvalds
61f96e684e Including fixes from netfilter.
Current release - regressions:
 
  - 4 fixes for the netdev per-instance locking
 
 Current release - new code bugs:
 
  - consolidate more code between existing Rx zero-copy and uring so that
    the latter doesn't miss / have to duplicate the safety checks
 
 Previous releases - regressions:
 
  - ipv6: fix omitted Netlink attributes when using SKIP_STATS
 
 Previous releases - always broken:
 
  - net: fix geneve_opt length integer overflow
 
  - udp: fix multiple wrap arounds of sk->sk_rmem_alloc when it
    approaches INT_MAX
 
  - dsa: mvpp2: add a lock to avoid corruption of the shared TCAM
 
  - dsa: airoha: fix issues with traffic QoS configuration / offload,
    and flow table offload
 
 Misc:
 
  - touch up the Netlink YAML specs of old families to make them usable
    for user space C codegen
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - regressions:

   - four fixes for the netdev per-instance locking

  Current release - new code bugs:

   - consolidate more code between existing Rx zero-copy and uring so
     that the latter doesn't miss / have to duplicate the safety checks

  Previous releases - regressions:

   - ipv6: fix omitted Netlink attributes when using SKIP_STATS

  Previous releases - always broken:

   - net: fix geneve_opt length integer overflow

   - udp: fix multiple wrap arounds of sk->sk_rmem_alloc when it
     approaches INT_MAX

   - dsa: mvpp2: add a lock to avoid corruption of the shared TCAM

   - dsa: airoha: fix issues with traffic QoS configuration / offload,
     and flow table offload

  Misc:

   - touch up the Netlink YAML specs of old families to make them usable
     for user space C codegen"

* tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (56 commits)
  selftests: net: amt: indicate progress in the stress test
  netlink: specs: rt_route: pull the ifa- prefix out of the names
  netlink: specs: rt_addr: pull the ifa- prefix out of the names
  netlink: specs: rt_addr: fix get multi command name
  netlink: specs: rt_addr: fix the spec format / schema failures
  net: avoid false positive warnings in __net_mp_close_rxq()
  net: move mp dev config validation to __net_mp_open_rxq()
  net: ibmveth: make veth_pool_store stop hanging
  arcnet: Add NULL check in com20020pci_probe()
  ipv6: Do not consider link down nexthops in path selection
  ipv6: Start path selection from the first nexthop
  usbnet:fix NPE during rx_complete
  net: octeontx2: Handle XDP_ABORTED and XDP invalid as XDP_DROP
  net: fix geneve_opt length integer overflow
  io_uring/zcrx: fix selftests w/ updated netdev Python helpers
  selftests: net: use netdevsim in netns test
  docs: net: document netdev notifier expectations
  net: dummy: request ops lock
  netdevsim: add dummy device notifiers
  net: rename rtnl_net_debug to lock_debug
  ...
2025-04-04 09:15:35 -07:00
Linus Torvalds
a05c6e6694 soc: drivers for 6.15, part 2
This is the promised follow-up to the soc drivers branch, adding minor
 updates to omap and freescale drivers.
 
 Most notably, Ioana Ciornei takes over maintenance of the DPAA bus
 driver used in some NXP (originally Freescale) chips.
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Merge tag 'soc-drivers-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull more SoC driver updates from Arnd Bergmann:
 "This is the promised follow-up to the soc drivers branch, adding minor
  updates to omap and freescale drivers.

  Most notably, Ioana Ciornei takes over maintenance of the DPAA bus
  driver used in some NXP (originally Freescale) chips"

* tag 'soc-drivers-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  bus: fsl-mc: Remove deadcode
  MAINTAINERS: add the linuppc-dev list to the fsl-mc bus entry
  MAINTAINERS: fix nonexistent dtbinding file name
  MAINTAINERS: add myself as maintainer for the fsl-mc bus
  irqdomain: soc: Switch to irq_find_mapping()
  Input: tsc2007 - accept standard properties
2025-04-04 09:06:32 -07:00
Jakub Kicinski
ec304b70d4 net: move mp dev config validation to __net_mp_open_rxq()
devmem code performs a number of safety checks to avoid having
to reimplement all of them in the drivers. Move those to
__net_mp_open_rxq() and reuse that function for binding to make
sure that io_uring ZC also benefits from them.

While at it rename the queue ID variable to rxq_idx in
__net_mp_open_rxq(), we touch most of the relevant lines.

The XArray insertion is reordered after the netdev_rx_queue_restart()
call, otherwise we'd need to duplicate the queue index check
or risk inserting an invalid pointer. The XArray allocation
failures should be extremely rare.

Reviewed-by: Mina Almasry <almasrymina@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Fixes: 6e18ed929d ("net: add helpers for setting a memory provider on an rx queue")
Link: https://patch.msgid.link/20250403013405.2827250-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-04 07:35:38 -07:00
Arnd Bergmann
45c88e9e82 FSL SOC Changes for 6.15:
- irqdomain cleanups from Jiry
 
 - Add Ioana as Maintainer of fsl-mc bus and remove Laurentiu and Stuart
 
 - Remove deadcode from fsl-mc bus
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Merge tag 'soc_fsl-6.15-1' of https://github.com/chleroy/linux into soc/drivers-2

FSL SOC Changes for 6.15:

- irqdomain cleanups from Jiry

- Add Ioana as Maintainer of fsl-mc bus and remove Laurentiu and Stuart

- Remove deadcode from fsl-mc bus

* tag 'soc_fsl-6.15-1' of https://github.com/chleroy/linux:
  bus: fsl-mc: Remove deadcode
  MAINTAINERS: add the linuppc-dev list to the fsl-mc bus entry
  MAINTAINERS: fix nonexistent dtbinding file name
  MAINTAINERS: add myself as maintainer for the fsl-mc bus
  irqdomain: soc: Switch to irq_find_mapping()
2025-04-04 14:37:11 +02:00
Linus Torvalds
7930edcc3a io_uring-6.15-20250403
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Merge tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux

Pull more io_uring updates from Jens Axboe:
 "Set of fixes/updates for io_uring that should go into this release.

  The ublk bits could've gone via either tree - usually I put them in
  block, but they got a bit mixed this series with the zero-copy
  supported that ended up dipping into both trees.

  This contains:

   - Fix for sendmsg zc, include in pinned pages accounting like we do
     for the other zc types

   - Series for ublk fixing request aborting, doing various little
     cleanups, fixing some zc issues, and adding queue_rqs support

   - Another ublk series doing some code cleanups

   - Series cleaning up the io_uring send path, mostly in preparation
     for registered buffers

   - Series doing little MSG_RING cleanups

   - Fix for the newly added zc rx, fixing len being 0 for the last
     invocation of the callback

   - Add vectored registered buffer support for ublk. With that, then
     ublk also supports this feature in the kernel revision where it
     could generically introduced for rw/net

   - A bunch of selftest additions for ublk. This is the majority of the
     diffstat

   - Silence a KCSAN data race warning for io-wq

   - Various little cleanups and fixes"

* tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux: (44 commits)
  io_uring: always do atomic put from iowq
  selftests: ublk: enable zero copy for stripe target
  io_uring: support vectored kernel fixed buffer
  block: add for_each_mp_bvec()
  io_uring: add validate_fixed_range() for validate fixed buffer
  selftests: ublk: kublk: fix an error log line
  selftests: ublk: kublk: use ioctl-encoded opcodes
  io_uring/zcrx: return early from io_zcrx_recv_skb if readlen is 0
  io_uring/net: avoid import_ubuf for regvec send
  io_uring/rsrc: check size when importing reg buffer
  io_uring: cleanup {g,s]etsockopt sqe reading
  io_uring: hide caches sqes from drivers
  io_uring: make zcrx depend on CONFIG_IO_URING
  io_uring: add req flag invariant build assertion
  Documentation: ublk: remove dead footnote
  selftests: ublk: specify io_cmd_buf pointer type
  ublk: specify io_cmd_buf pointer type
  io_uring: don't pass ctx to tw add remote helper
  io_uring/msg: initialise msg request opcode
  io_uring/msg: rename io_double_lock_ctx()
  ...
2025-04-03 15:48:58 -07:00
Stanislav Fomichev
1901066aab netdevsim: add dummy device notifiers
In order to exercise and verify notifiers' locking assumptions,
register dummy notifiers (via register_netdevice_notifier_dev_net).
Share notifier event handler that enforces the assumptions with
lock_debug.c (rename and export rtnl_net_debug_event as
netdev_debug_event). Add ops lock asserts to netdev_debug_event.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250401163452.622454-6-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03 15:32:08 -07:00
Stanislav Fomichev
8965c160b8 net: use netif_disable_lro in ipv6_add_dev
ipv6_add_dev might call dev_disable_lro which unconditionally grabs
instance lock, so it will deadlock during NETDEV_REGISTER. Switch
to netif_disable_lro.

Make sure all callers hold the instance lock as well.

Cc: Cosmin Ratiu <cratiu@nvidia.com>
Fixes: ad7c7b2172 ("net: hold netdev instance lock during sysfs operations")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250401163452.622454-4-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03 15:32:08 -07:00
Stanislav Fomichev
4c975fd700 net: hold instance lock during NETDEV_REGISTER/UP
Callers of inetdev_init can come from several places with inconsistent
expectation about netdev instance lock. Grab instance lock during
REGISTER (plus UP). Also solve the inconsistency with UNREGISTER
where it was locked only during move netns path.

WARNING: CPU: 10 PID: 1479 at ./include/net/netdev_lock.h:54
__netdev_update_features+0x65f/0xca0
__warn+0x81/0x180
__netdev_update_features+0x65f/0xca0
report_bug+0x156/0x180
handle_bug+0x4f/0x90
exc_invalid_op+0x13/0x60
asm_exc_invalid_op+0x16/0x20
__netdev_update_features+0x65f/0xca0
netif_disable_lro+0x30/0x1d0
inetdev_init+0x12f/0x1f0
inetdev_event+0x48b/0x870
notifier_call_chain+0x38/0xf0
register_netdevice+0x741/0x8b0
register_netdev+0x1f/0x40
mlx5e_probe+0x4e3/0x8e0 [mlx5_core]
auxiliary_bus_probe+0x3f/0x90
really_probe+0xc3/0x3a0
__driver_probe_device+0x80/0x150
driver_probe_device+0x1f/0x90
__device_attach_driver+0x7d/0x100
bus_for_each_drv+0x80/0xd0
__device_attach+0xb4/0x1c0
bus_probe_device+0x91/0xa0
device_add+0x657/0x870

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reported-by: Cosmin Ratiu <cratiu@nvidia.com>
Fixes: ad7c7b2172 ("net: hold netdev instance lock during sysfs operations")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250401163452.622454-3-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03 15:32:08 -07:00
Linus Torvalds
5916a6fbc0 RTC for 6.15
Core:
  - setdate is removed as it has better replacements
  - skip alarms with a second resolution when we know the RTC doesn't support
    those.
 
 Subsystem:
  - remove unnecessary private struct members
  - use devm_pm_set_wake_irq were relevant
 
 Drivers:
  - ds1307: stop disabling alarms on probe for DS1337, DS1339, DS1341 and DS3231
  - max31335: add max31331 support
  - pcf50633 is removed as support for the related SoC has been removed
  - pcf85063: properly handle POR failures
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Merge tag 'rtc-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "We see a net reduction of the number of lines of code thanks to the
  removal of a now unused driver and a testing tool that is not used
  anymore. Apart from this, the max31335 driver gets support for a new
  part number and pm8xxx gets UEFI support.

  Core:

   - setdate is removed as it has better replacements

   - skip alarms with a second resolution when we know the RTC doesn't
     support those.

  Subsystem:

   - remove unnecessary private struct members

   - use devm_pm_set_wake_irq were relevant

  Drivers:

   - ds1307: stop disabling alarms on probe for DS1337, DS1339, DS1341
     and DS3231

   - max31335: add max31331 support

   - pcf50633 is removed as support for the related SoC has been removed

   - pcf85063: properly handle POR failures"

* tag 'rtc-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits)
  rtc: remove 'setdate' test program
  selftest: rtc: skip some tests if the alarm only supports minutes
  rtc: mt6397: drop unused defines
  rtc: pcf85063: replace dev_err+return with return dev_err_probe
  rtc: pcf85063: do a SW reset if POR failed
  rtc: max31335: Add driver support for max31331
  dt-bindings: rtc: max31335: Add max31331 support
  rtc: cros-ec: Avoid a couple of -Wflex-array-member-not-at-end warnings
  dt-bindings: rtc: pcf2127: Reference spi-peripheral-props.yaml
  rtc: rzn1: implement one-second accuracy for alarms
  rtc: pcf50633: Remove
  rtc: pm8xxx: implement qcom,no-alarm flag for non-HLOS owned alarm
  rtc: pm8xxx: mitigate flash wear
  rtc: pm8xxx: add support for uefi offset
  dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag
  rtc: rv3032: drop WADA
  rtc: rv3032: fix EERD location
  rtc: pm8xxx: switch to devm_device_init_wakeup
  rtc: pm8xxx: fix possible race condition
  rtc: mpfs: switch to devm_device_init_wakeup
  ...
2025-04-03 15:31:14 -07:00
Linus Torvalds
5a2b5cb76c One bugfix and a couple of small late-arriving updates.
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Merge tag 'mm-nonmm-stable-2025-04-02-22-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more non-MM updates from Andrew Morton:
 "One bugfix and a couple of small late-arriving updates"

* tag 'mm-nonmm-stable-2025-04-02-22-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  lib: scatterlist: fix sg_split_phys to preserve original scatterlist offsets
  lib/sort.c: add _nonatomic() variants with cond_resched()
  mailmap: add an entry for Nicolas Schier
2025-04-03 11:16:57 -07:00
Linus Torvalds
8c7c1b5506 - The 2 patch series "mm: fixes for fallouts from mem_init() cleanup"
from Mike Rapoport fixes a couple of issues with the just-merged "arch,
   mm: reduce code duplication in mem_init()" series.
 
 - The 4 patch series "MAINTAINERS: add my isub-entries to MM part." from
   Mike Rapoport does some maintenance on MAINTAINERS.
 
 - The 6 patch series "remove tlb_remove_page_ptdesc()" from Qi Zheng
   does some cleanup work to the page mapping code.
 
 - The 7 patch series "mseal system mappings" from Jeff Xu permits
   sealing of "system mappings", such as vdso, vvar, vvar_vclock, vectors
   (arm compat-mode), sigpage (arm compat-mode).
 
 - Plus the usual shower of singleton patches.
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Merge tag 'mm-stable-2025-04-02-22-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

 - The series "mm: fixes for fallouts from mem_init() cleanup" from Mike
   Rapoport fixes a couple of issues with the just-merged "arch, mm:
   reduce code duplication in mem_init()" series

 - The series "MAINTAINERS: add my isub-entries to MM part." from Mike
   Rapoport does some maintenance on MAINTAINERS

 - The series "remove tlb_remove_page_ptdesc()" from Qi Zheng does some
   cleanup work to the page mapping code

 - The series "mseal system mappings" from Jeff Xu permits sealing of
   "system mappings", such as vdso, vvar, vvar_vclock, vectors (arm
   compat-mode), sigpage (arm compat-mode)

 - Plus the usual shower of singleton patches

* tag 'mm-stable-2025-04-02-22-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits)
  mseal sysmap: add arch-support txt
  mseal sysmap: enable s390
  selftest: test system mappings are sealed
  mseal sysmap: update mseal.rst
  mseal sysmap: uprobe mapping
  mseal sysmap: enable arm64
  mseal sysmap: enable x86-64
  mseal sysmap: generic vdso vvar mapping
  selftests: x86: test_mremap_vdso: skip if vdso is msealed
  mseal sysmap: kernel config and header change
  mm: pgtable: remove tlb_remove_page_ptdesc()
  x86: pgtable: convert to use tlb_remove_ptdesc()
  riscv: pgtable: unconditionally use tlb_remove_ptdesc()
  mm: pgtable: convert some architectures to use tlb_remove_ptdesc()
  mm: pgtable: change pt parameter of tlb_remove_ptdesc() to struct ptdesc*
  mm: pgtable: make generic tlb_remove_table() use struct ptdesc
  microblaze/mm: put mm_cmdline_setup() in .init.text section
  mm/memory_hotplug: fix call folio_test_large with tail page in do_migrate_range
  MAINTAINERS: mm: add entry for secretmem
  MAINTAINERS: mm: add entry for numa memblocks and numa emulation
  ...
2025-04-03 11:10:00 -07:00
Linus Torvalds
204e9a18f1 5 hotfixes. 3 are cc:stable and the remainder address post-6.14 issues
or aren't considered necessary for -stable kernels.
 
 All 5 patches are for MM.
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Merge tag 'mm-hotfixes-stable-2025-04-02-21-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM hotfixes from Andrew Morton:
 "Five hotfixes. Three are cc:stable and the remainder address post-6.14
  issues or aren't considered necessary for -stable kernels.

  All patches are for MM"

* tag 'mm-hotfixes-stable-2025-04-02-21-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: zswap: fix crypto_free_acomp() deadlock in zswap_cpu_comp_dead()
  mm/hugetlb: move hugetlb_sysctl_init() to the __init section
  mm: page_isolation: avoid calling folio_hstate() without hugetlb_lock
  mm/hugetlb_vmemmap: fix memory loads ordering
  mm/userfaultfd: fix release hang over concurrent GUP
2025-04-03 10:47:47 -07:00
Linus Torvalds
01ecadbe09 cxl for v6.15
- Add support for Global Persistent Flush (GPF)
 - Cleanup of DPA partition metadata handling
 	- Remove the CXL_DECODER_MIXED enum that's not needed anymore
 	- Introduce helpers to access resource and perf meta data
 	- Introduce 'struct cxl_dpa_partition' and 'struct cxl_range_info'
 	- Make cxl_dpa_alloc() DPA partition number agnostic
 	- Remove cxl_decoder_mode
 	- Cleanup partition size and perf helpers
 - Remove unused CXL partition values
 - Add logging support for CXL CPER endpoint and port protocol errors
 	- Prefix protocol error struct and function names with cxl_
 	- Move protocol error definitions and structures to a common location
 	- Remove drivers/firmware/efi/cper_cxl.h to include/linux/cper.h
 	- Add support in GHES to process CXL CPER protocol errors
 	- Process CXL CPER protocol errors
 	- Add trace logging for CXL PCIe port RAS errors
 - Remove redundant gp_port init
 - Add validation of cxl device serial number
 - CXL ABI documentation updates/fixups
 - A series that uses guard() to clean up open coded mutex lockings and remove gotos for error
   handling.
 - Some followup patches to support dirty shutdown accounting
 	- Add helper to retrieve DVSEC offset for dirty shutdown registers
 	- Rename cxl_get_dirty_shutdown() to cxl_arm_dirty_shutdown()
 	- Add support for dirty shutdown count via sysfs
 	- cxl_test support for dirty shutdown
 - A series to support CXL mailbox Features commands. Mostly in preparation for CXL EDAC
   code to utilize the Features commands. It's also in preparation for CXL fwctl support
   to utilize the CXL Features. The commands include "Get Supported Features", "Get Feature",
   and "Set Feature".
 - A series to support extended linear cache support described by the ACPI HMAT table. The
   addition helps enumerate the cache and also provides additional RAS reporting support for
   configuration with extended linear cache. (and related fixes for the
   series).
 - An update to cxl_test to support a 3-way capable CFMWS.
 - A documentation fix to remove unused "mixed mode".
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Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull Compute Express Link (CXL)  updates from Dave Jiang:

 - Add support for Global Persistent Flush (GPF)

 - Cleanup of DPA partition metadata handling:
     - Remove the CXL_DECODER_MIXED enum that's not needed anymore
     - Introduce helpers to access resource and perf meta data
     - Introduce 'struct cxl_dpa_partition' and 'struct cxl_range_info'
     - Make cxl_dpa_alloc() DPA partition number agnostic
     - Remove cxl_decoder_mode
     - Cleanup partition size and perf helpers

 - Remove unused CXL partition values

 - Add logging support for CXL CPER endpoint and port protocol errors:
     - Prefix protocol error struct and function names with cxl_
     - Move protocol error definitions and structures to a common location
     - Remove drivers/firmware/efi/cper_cxl.h to include/linux/cper.h
     - Add support in GHES to process CXL CPER protocol errors
     - Process CXL CPER protocol errors
     - Add trace logging for CXL PCIe port RAS errors

 - Remove redundant gp_port init

 - Add validation of cxl device serial number

 - CXL ABI documentation updates/fixups

 - A series that uses guard() to clean up open coded mutex lockings and
   remove gotos for error handling.

 - Some followup patches to support dirty shutdown accounting:
     - Add helper to retrieve DVSEC offset for dirty shutdown registers
     - Rename cxl_get_dirty_shutdown() to cxl_arm_dirty_shutdown()
     - Add support for dirty shutdown count via sysfs
     - cxl_test support for dirty shutdown

 - A series to support CXL mailbox Features commands.

   Mostly in preparation for CXL EDAC code to utilize the Features
   commands. It's also in preparation for CXL fwctl support to utilize
   the CXL Features. The commands include "Get Supported Features", "Get
   Feature", and "Set Feature".

 - A series to support extended linear cache support described by the
   ACPI HMAT table.

   The addition helps enumerate the cache and also provides additional
   RAS reporting support for configuration with extended linear cache.
   (and related fixes for the series).

 - An update to cxl_test to support a 3-way capable CFMWS

 - A documentation fix to remove unused "mixed mode"

* tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (39 commits)
  cxl/region: Fix the first aliased address miscalculation
  cxl/region: Quiet some dev_warn()s in extended linear cache setup
  cxl/Documentation: Remove 'mixed' from sysfs mode doc
  cxl: Fix warning from emitting resource_size_t as long long int on 32bit systems
  cxl/test: Define a CFMWS capable of a 3 way HB interleave
  cxl/mem: Do not return error if CONFIG_CXL_MCE unset
  tools/testing/cxl: Set Shutdown State support
  cxl/pmem: Export dirty shutdown count via sysfs
  cxl/pmem: Rename cxl_dirty_shutdown_state()
  cxl/pci: Introduce cxl_gpf_get_dvsec()
  cxl/pci: Support Global Persistent Flush (GPF)
  cxl: Document missing sysfs files
  cxl: Plug typos in ABI doc
  cxl/pmem: debug invalid serial number data
  cxl/cdat: Remove redundant gp_port initialization
  cxl/memdev: Remove unused partition values
  cxl/region: Drop goto pattern of construct_region()
  cxl/region: Drop goto pattern in cxl_dax_region_alloc()
  cxl/core: Use guard() to drop goto pattern of cxl_dpa_alloc()
  cxl/core: Use guard() to drop the goto pattern of cxl_dpa_free()
  ...
2025-04-02 20:04:43 -07:00
Linus Torvalds
a1b5bd45d4 USB/Thunderbolt update for 6.15-rc1
Here is the big set of USB and Thunderbolt driver updates for 6.15-rc1.
 Included in here are:
   - Thunderbolt driver and core api updates for new hardware and
     features
   - usb-storage const array cleanups
   - typec driver updates
   - dwc3 driver updates
   - xhci driver updates and bugfixes
   - small USB documentation updates
   - usb cdns3 driver updates
   - usb gadget driver updates
   - other small driver updates and fixes
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for
  6.15-rc1. Included in here are:

   - Thunderbolt driver and core api updates for new hardware and
     features

   - usb-storage const array cleanups

   - typec driver updates

   - dwc3 driver updates

   - xhci driver updates and bugfixes

   - small USB documentation updates

   - usb cdns3 driver updates

   - usb gadget driver updates

   - other small driver updates and fixes

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (92 commits)
  thunderbolt: Do not add non-active NVM if NVM upgrade is disabled for retimer
  thunderbolt: Scan retimers after device router has been enumerated
  usb: host: cdns3: forward lost power information to xhci
  usb: host: xhci-plat: allow upper layers to signal power loss
  usb: xhci: change xhci_resume() parameters to explicit the desired info
  usb: cdns3-ti: run HW init at resume() if HW was reset
  usb: cdns3-ti: move reg writes to separate function
  usb: cdns3: call cdns_power_is_lost() only once in cdns_resume()
  usb: cdns3: rename hibernated argument of role->resume() to lost_power
  usb: xhci: tegra: rename `runtime` boolean to `is_auto_runtime`
  usb: host: xhci-plat: mvebu: use ->quirks instead of ->init_quirk() func
  usb: dwc3: Don't use %pK through printk
  usb: core: Don't use %pK through printk
  usb: gadget: aspeed: Add NULL pointer check in ast_vhub_init_dev()
  dt-bindings: usb: qcom,dwc3: Synchronize minItems for interrupts and -names
  usb: common: usb-conn-gpio: switch psy_cfg from of_node to fwnode
  usb: xhci: Avoid Stop Endpoint retry loop if the endpoint seems Running
  usb: xhci: Don't change the status of stalled TDs on failed Stop EP
  xhci: Avoid queuing redundant Stop Endpoint command for stalled endpoint
  xhci: Handle spurious events on Etron host isoc enpoints
  ...
2025-04-02 18:23:31 -07:00
Linus Torvalds
ddd0172f18 TTY/Serial driver updates for 6.15-rc1
Here is the big set of serial and tty driver updates for 6.15-rc1.
 Include in here are the following:
   - more great tty layer cleanups from Jiri.  Someday this will be done,
     but that's not going to be any year soon...
   - kdb debug driver reverts to fix a reported issue
   - lots of .dts binding updates for different devices with serial
     devices
   - lots of tiny updates and tweaks and a few bugfixes for different
     serial drivers.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big set of serial and tty driver updates for 6.15-rc1.
  Include in here are the following:

   - more great tty layer cleanups from Jiri. Someday this will be done,
     but that's not going to be any year soon...

   - kdb debug driver reverts to fix a reported issue

   - lots of .dts binding updates for different devices with serial
     devices

   - lots of tiny updates and tweaks and a few bugfixes for different
     serial drivers.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (79 commits)
  tty: serial: fsl_lpuart: Fix unused variable 'sport' build warning
  serial: stm32: do not deassert RS485 RTS GPIO prematurely
  serial: 8250: add driver for NI UARTs
  dt-bindings: serial: snps-dw-apb-uart: document RZ/N1 binding without DMA
  serial: icom: fix code format problems
  serial: sh-sci: Save and restore more registers
  tty: serial: pl011: remove incorrect of_match_ptr annotation
  dt-bindings: serial: snps-dw-apb-uart: Add support for rk3562
  tty: serial: lpuart: only disable CTS instead of overwriting the whole UARTMODIR register
  tty: caif: removed unused function debugfs_tx()
  serial: 8250_dma: terminate correct DMA in tx_dma_flush()
  tty: serial: fsl_lpuart: rename register variables more specifically
  tty: serial: fsl_lpuart: use port struct directly to simply code
  tty: serial: fsl_lpuart: Use u32 and u8 for register variables
  tty: serial: fsl_lpuart: disable transmitter before changing RS485 related registers
  tty: serial: 8250: Add Brainboxes XC devices
  dt-bindings: serial: fsl-lpuart: support i.MX94
  tty: serial: 8250: Add some more device IDs
  dt-bindings: serial: samsung: add exynos7870-uart compatible
  serial: 8250_dw: Comment possible corner cases in serial_out() implementation
  ...
2025-04-02 18:17:33 -07:00
Linus Torvalds
94d471a4f4 NFS client updates for Linux 6.15
Highlights include:
 
 Bugfixes:
 - 3 Fixes for looping in the NFSv4 state manager delegation code.
 - Fix for the NFSv4 state XDR code from Neil Brown.
 - Fix a leaked reference in nfs_lock_and_join_requests().
 - Fix a use-after-free in the delegation return code.
 
 Features:
 - Implemenation of the NFSv4.2 copy offload OFFLOAD_STATUS operation to
   allow monitoring of an in-progress copy.
 - Add a mount option to force NFSv3/NFSv4 to use READDIRPLUS in a
   getdents() call.
 - SUNRPC now allows some basic management of an existing RPC client's
   connections using sysfs.
 - Improvements to the automated teardown of a NFS client when the
   container it was initiated from gets killed.
 - Improvements to prevent tasks from getting stuck in a killable wait
   state after calling exit_signals().
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Merge tag 'nfs-for-6.15-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Bugfixes:

   - Three fixes for looping in the NFSv4 state manager delegation code

   - Fix for the NFSv4 state XDR code (Neil Brown)

   - Fix a leaked reference in nfs_lock_and_join_requests()

   - Fix a use-after-free in the delegation return code

  Features:

   - Implement the NFSv4.2 copy offload OFFLOAD_STATUS operation to
     allow monitoring of an in-progress copy

   - Add a mount option to force NFSv3/NFSv4 to use READDIRPLUS in a
     getdents() call

   - SUNRPC now allows some basic management of an existing RPC client's
     connections using sysfs

   - Improvements to the automated teardown of a NFS client when the
     container it was initiated from gets killed

   - Improvements to prevent tasks from getting stuck in a killable wait
     state after calling exit_signals()"

* tag 'nfs-for-6.15-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (29 commits)
  nfs: Add missing release on error in nfs_lock_and_join_requests()
  NFSv4: Check for delegation validity in nfs_start_delegation_return_locked()
  NFS: Don't allow waiting for exiting tasks
  SUNRPC: Don't allow waiting for exiting tasks
  NFSv4: Treat ENETUNREACH errors as fatal for state recovery
  NFSv4: clp->cl_cons_state < 0 signifies an invalid nfs_client
  NFSv4: Further cleanups to shutdown loops
  NFS: Shut down the nfs_client only after all the superblocks
  SUNRPC: rpc_clnt_set_transport() must not change the autobind setting
  SUNRPC: rpcbind should never reset the port to the value '0'
  pNFS/flexfiles: Report ENETDOWN as a connection error
  pNFS/flexfiles: Treat ENETUNREACH errors as fatal in containers
  NFS: Treat ENETUNREACH errors as fatal in containers
  NFS: Add a mount option to make ENETUNREACH errors fatal
  sunrpc: Add a sysfs file for one-step xprt deletion
  sunrpc: Add a sysfs file for adding a new xprt
  sunrpc: Add a sysfs files for rpc_clnt information
  sunrpc: Add a sysfs attr for xprtsec
  NFS: Add implid to sysfs
  NFS: Extend rdirplus mount option with "force|none"
  ...
2025-04-02 17:06:31 -07:00
Linus Torvalds
5e17b5c717 fuse update for 6.15
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Merge tag 'fuse-update-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

Pull fuse updates from Miklos Szeredi:

 - Allow connection to server to time out (Joanne Koong)

 - If server doesn't support creating a hard link, return EPERM rather
   than ENOSYS (Matt Johnston)

 - Allow file names longer than 1024 chars (Bernd Schubert)

 - Fix a possible race if request on io_uring queue is interrupted
   (Bernd Schubert)

 - Misc fixes and cleanups

* tag 'fuse-update-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: remove unneeded atomic set in uring creation
  fuse: fix uring race condition for null dereference of fc
  fuse: Increase FUSE_NAME_MAX to PATH_MAX
  fuse: Allocate only namelen buf memory in fuse_notify_
  fuse: add default_request_timeout and max_request_timeout sysctls
  fuse: add kernel-enforced timeout option for requests
  fuse: optmize missing FUSE_LINK support
  fuse: Return EPERM rather than ENOSYS from link()
  fuse: removed unused function fuse_uring_create() from header
  fuse: {io-uring} Fix a possible req cancellation race
2025-04-02 16:36:59 -07:00
Linus Torvalds
4b06c990c1 vfs-6.15-rc1.fixes
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Merge tag 'vfs-6.15-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:

 - Add a new maintainer for configfs

 - Fix exportfs module description

 - Place flexible array memeber at the end of an internal struct in the
   mount code

 - Add new maintainer for netfslib as Jeff Layton is stepping down as
   current co-maintainer

 - Fix error handling in cachefiles_get_directory()

 - Cleanup do_notify_pidfd()

 - Fix syscall number definitions in pidfd selftests

 - Fix racy usage of fs_struct->in exec during multi-threaded exec

 - Ensure correct exit code is reported when pidfs_exit() is called from
   release_task() for a delayed thread-group leader exit

 - Fix conflicting iomap flag definitions

* tag 'vfs-6.15-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  iomap: Fix conflicting values of iomap flags
  fs: namespace: Avoid -Wflex-array-member-not-at-end warning
  MAINTAINERS: configfs: add Andreas Hindborg as maintainer
  exportfs: add module description
  exit: fix the usage of delay_group_leader->exit_code in do_notify_parent() and pidfs_exit()
  netfs: add Paulo as maintainer and remove myself as Reviewer
  cachefiles: Fix oops in vfs_mkdir from cachefiles_get_directory
  exec: fix the racy usage of fs_struct->in_exec
  selftests/pidfd: fixes syscall number defines
  pidfs: cleanup the usage of do_notify_pidfd()
2025-04-02 16:05:21 -07:00
Linus Torvalds
0a87d6bb6f powerpc updates for 6.15 #2
- Remove the IBM CAPI (cxl) driver
 
 Thanks to: Andrew Donnellan.
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Merge tag 'powerpc-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:

 - Remove the IBM CAPI (cxl) driver

Thanks to Andrew Donnellan.

* tag 'powerpc-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  docs: Fix references to IBM CAPI (cxl) removal version
  cxl: Remove driver
2025-04-02 12:35:49 -07:00
Linus Torvalds
92b71befc3 These are objtool fixes and updates by Josh Poimboeuf, centered
around the fallout from the new CONFIG_OBJTOOL_WERROR=y feature,
 which, despite its default-off nature, increased the profile/impact
 of objtool warnings:
 
  - Improve error handling and the presentation of warnings/errors.
 
  - Revert the new summary warning line that some test-bot tools
    interpreted as new regressions.
 
  - Fix a number of objtool warnings in various drivers, core kernel
    code and architecture code. About half of them are potential
    problems related to out-of-bounds accesses or potential undefined
    behavior, the other half are additional objtool annotations.
 
  - Update objtool to latest (known) compiler quirks and
    objtool bugs triggered by compiler code generation
 
  - Misc fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "These are objtool fixes and updates by Josh Poimboeuf, centered around
  the fallout from the new CONFIG_OBJTOOL_WERROR=y feature, which,
  despite its default-off nature, increased the profile/impact of
  objtool warnings:

   - Improve error handling and the presentation of warnings/errors

   - Revert the new summary warning line that some test-bot tools
     interpreted as new regressions

   - Fix a number of objtool warnings in various drivers, core kernel
     code and architecture code. About half of them are potential
     problems related to out-of-bounds accesses or potential undefined
     behavior, the other half are additional objtool annotations

   - Update objtool to latest (known) compiler quirks and objtool bugs
     triggered by compiler code generation

   - Misc fixes"

* tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  objtool/loongarch: Add unwind hints in prepare_frametrace()
  rcu-tasks: Always inline rcu_irq_work_resched()
  context_tracking: Always inline ct_{nmi,irq}_{enter,exit}()
  sched/smt: Always inline sched_smt_active()
  objtool: Fix verbose disassembly if CROSS_COMPILE isn't set
  objtool: Change "warning:" to "error: " for fatal errors
  objtool: Always fail on fatal errors
  Revert "objtool: Increase per-function WARN_FUNC() rate limit"
  objtool: Append "()" to function name in "unexpected end of section" warning
  objtool: Ignore end-of-section jumps for KCOV/GCOV
  objtool: Silence more KCOV warnings, part 2
  objtool, drm/vmwgfx: Don't ignore vmw_send_msg() for ORC
  objtool: Fix STACK_FRAME_NON_STANDARD for cold subfunctions
  objtool: Fix segfault in ignore_unreachable_insn()
  objtool: Fix NULL printf() '%s' argument in builtin-check.c:save_argv()
  objtool, lkdtm: Obfuscate the do_nothing() pointer
  objtool, regulator: rk808: Remove potential undefined behavior in rk806_set_mode_dcdc()
  objtool, ASoC: codecs: wcd934x: Remove potential undefined behavior in wcd934x_slim_irq_handler()
  objtool, Input: cyapa - Remove undefined behavior in cyapa_update_fw_store()
  objtool, panic: Disable SMAP in __stack_chk_fail()
  ...
2025-04-02 10:30:10 -07:00
Linus Torvalds
af54a3a151 more printk changes for 6.15
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Merge tag 'printk-for-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull more printk updates from Petr Mladek:

 - Silence warnings about candidates for ‘gnu_print’ format attribute

* tag 'printk-for-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  vsnprintf: Silence false positive GCC warning for va_format()
  vsnprintf: Drop unused const char fmt * in va_format()
  vsnprintf: Mark binary printing functions with __printf() attribute
  tracing: Mark binary printing functions with __printf() attribute
  seq_file: Mark binary printing functions with __printf() attribute
  seq_buf: Mark binary printing functions with __printf() attribute
2025-04-02 10:05:55 -07:00
Linus Torvalds
002dcfd057 kgdb patches for 6.15
Two clean ups this cycle. The larger of which is the removal of a private
 allocator within kdb and replacing it with regular memory allocation. The
 other adopts the simplified version of strscpy() in a couple of places in
 kdb.
 
 Signed-off-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
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Merge tag 'kgdb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux

Pull kgdb updates from Daniel Thompson:
 "Two cleanups this cycle. The larger of which is the removal of a
  private allocator within kdb and replacing it with regular memory
  allocation. The other adopts the simplified version of strscpy() in a
  couple of places in kdb"

* tag 'kgdb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kdb: Remove optional size arguments from strscpy() calls
  kdb: remove usage of static environment buffer
2025-04-02 09:55:51 -07:00
Ming Lei
149974fdb8 block: add for_each_mp_bvec()
Add helper of for_each_mp_bvec() for io_uring to import fixed kernel
buffer.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250325135155.935398-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-02 07:06:59 -06:00
Linus Torvalds
acc4d5ff0b Rather tiny PR, mostly so that we can get into our trees your fix
to the x86 Makefile.
 
 Current release - regressions:
 
  - Revert "tcp: avoid atomic operations on sk->sk_rmem_alloc",
    error queue accounting was missed
 
 Current release - new code bugs:
 
  - 5 fixes for the netdevice instance locking work
 
 Previous releases - regressions:
 
  - usbnet: restore usb%d name exception for local mac addresses
 
 Previous releases - always broken:
 
  - rtnetlink: allocate vfinfo size for VF GUIDs when supported,
    avoid spurious GET_LINK failures
 
  - eth: mana: Switch to page pool for jumbo frames
 
  - phy: broadcom: Correct BCM5221 PHY model detection
 
 Misc:
 
  - selftests: drv-net: replace helpers for referring to other files
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Rather tiny pull request, mostly so that we can get into our trees
  your fix to the x86 Makefile.

  Current release - regressions:

   - Revert "tcp: avoid atomic operations on sk->sk_rmem_alloc", error
     queue accounting was missed

  Current release - new code bugs:

   - 5 fixes for the netdevice instance locking work

  Previous releases - regressions:

   - usbnet: restore usb%d name exception for local mac addresses

  Previous releases - always broken:

   - rtnetlink: allocate vfinfo size for VF GUIDs when supported, avoid
     spurious GET_LINK failures

   - eth: mana: Switch to page pool for jumbo frames

   - phy: broadcom: Correct BCM5221 PHY model detection

  Misc:

   - selftests: drv-net: replace helpers for referring to other files"

* tag 'net-6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (22 commits)
  Revert "tcp: avoid atomic operations on sk->sk_rmem_alloc"
  bnxt_en: bring back rtnl lock in bnxt_shutdown
  eth: gve: add missing netdev locks on reset and shutdown paths
  selftests: mptcp: ignore mptcp_diag binary
  selftests: mptcp: close fd_in before returning in main_loop
  selftests: mptcp: fix incorrect fd checks in main_loop
  mptcp: fix NULL pointer in can_accept_new_subflow
  octeontx2-af: Free NIX_AF_INT_VEC_GEN irq
  octeontx2-af: Fix mbox INTR handler when num VFs > 64
  net: fix use-after-free in the netdev_nl_sock_priv_destroy()
  selftests: net: use Path helpers in ping
  selftests: net: use the dummy bpf from net/lib
  selftests: drv-net: replace the rpath helper with Path objects
  net: lapbether: use netdev_lockdep_set_classes() helper
  net: phy: broadcom: Correct BCM5221 PHY model detection
  net: usb: usbnet: restore usb%d name exception for local mac addresses
  net/mlx5e: SHAMPO, Make reserved size independent of page size
  net: mana: Switch to page pool for jumbo frames
  MAINTAINERS: Add dedicated entries for phy_link_topology
  net: move replay logic to tc_modify_qdisc
  ...
2025-04-01 20:00:51 -07:00
Linus Torvalds
3491aa0478 VFIO updates for v6.15-rc1
- Relax IGD support code to match display class device rather than
    specifically requiring a VGA device. (Tomita Moeko)
 
  - Accelerate DMA mapping of device MMIO by iterating at PMD and PUD
    levels to take advantage of huge pfnmap support added in v6.12.
    (Alex Williamson)
 
  - Extend virtio vfio-pci variant driver to include migration support
    for block devices where enabled by the PF. (Yishai Hadas)
 
  - Virtualize INTx PIN register for devices where the platform does
    not route legacy PCI interrupts for the device and the interrupt
    is reported as IRQ_NOTCONNECTED. (Alex Williamson)
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Merge tag 'vfio-v6.15-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Relax IGD support code to match display class device rather than
   specifically requiring a VGA device (Tomita Moeko)

 - Accelerate DMA mapping of device MMIO by iterating at PMD and PUD
   levels to take advantage of huge pfnmap support added in v6.12
   (Alex Williamson)

 - Extend virtio vfio-pci variant driver to include migration support
   for block devices where enabled by the PF (Yishai Hadas)

 - Virtualize INTx PIN register for devices where the platform does not
   route legacy PCI interrupts for the device and the interrupt is
   reported as IRQ_NOTCONNECTED (Alex Williamson)

* tag 'vfio-v6.15-rc1' of https://github.com/awilliam/linux-vfio:
  vfio/pci: Handle INTx IRQ_NOTCONNECTED
  vfio/virtio: Enable support for virtio-block live migration
  vfio/type1: Use mapping page mask for pfnmaps
  mm: Provide address mask in struct follow_pfnmap_args
  vfio/type1: Use consistent types for page counts
  vfio/type1: Use vfio_batch for vaddr_get_pfns()
  vfio/type1: Convert all vaddr_get_pfns() callers to use vfio_batch
  vfio/type1: Catch zero from pin_user_pages_remote()
  vfio/pci: match IGD devices in display controller class
2025-04-01 19:35:19 -07:00
Linus Torvalds
48552153cf iommufd 6.15 merge window pull
Two significant new items:
 
 - Allow reporting IOMMU HW events to userspace when the events are clearly
   linked to a device. This is linked to the VIOMMU object and is intended to
   be used by a VMM to forward HW events to the virtual machine as part of
   emulating a vIOMMU. ARM SMMUv3 is the first driver to use this
   mechanism. Like the existing fault events the data is delivered through
   a simple FD returning event records on read().
 
 - PASID support in VFIO. "Process Address Space ID" is a PCI feature that
   allows the device to tag all PCI DMA operations with an ID. The IOMMU
   will then use the ID to select a unique translation for those DMAs. This
   is part of Intel's vIOMMU support as VT-D HW requires the hypervisor to
   manage each PASID entry. The support is generic so any VFIO user could
   attach any translation to a PASID, and the support should work on ARM
   SMMUv3 as well. AMD requires additional driver work.
 
 Some minor updates, along with fixes:
 
 - Prevent using nested parents with fault's, no driver support today
 
 - Put a single "cookie_type" value in the iommu_domain to indicate what
   owns the various opaque owner fields
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd updates from Jason Gunthorpe:
 "Two significant new items:

   - Allow reporting IOMMU HW events to userspace when the events are
     clearly linked to a device.

     This is linked to the VIOMMU object and is intended to be used by a
     VMM to forward HW events to the virtual machine as part of
     emulating a vIOMMU. ARM SMMUv3 is the first driver to use this
     mechanism. Like the existing fault events the data is delivered
     through a simple FD returning event records on read().

   - PASID support in VFIO.

     The "Process Address Space ID" is a PCI feature that allows the
     device to tag all PCI DMA operations with an ID. The IOMMU will
     then use the ID to select a unique translation for those DMAs. This
     is part of Intel's vIOMMU support as VT-D HW requires the
     hypervisor to manage each PASID entry.

     The support is generic so any VFIO user could attach any
     translation to a PASID, and the support should work on ARM SMMUv3
     as well. AMD requires additional driver work.

  Some minor updates, along with fixes:

   - Prevent using nested parents with fault's, no driver support today

   - Put a single "cookie_type" value in the iommu_domain to indicate
     what owns the various opaque owner fields"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (49 commits)
  iommufd: Test attach before detaching pasid
  iommufd: Fix iommu_vevent_header tables markup
  iommu: Convert unreachable() to BUG()
  iommufd: Balance veventq->num_events inc/dec
  iommufd: Initialize the flags of vevent in iommufd_viommu_report_event()
  iommufd/selftest: Add coverage for reporting max_pasid_log2 via IOMMU_HW_INFO
  iommufd: Extend IOMMU_GET_HW_INFO to report PASID capability
  vfio: VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT support pasid
  vfio-iommufd: Support pasid [at|de]tach for physical VFIO devices
  ida: Add ida_find_first_range()
  iommufd/selftest: Add coverage for iommufd pasid attach/detach
  iommufd/selftest: Add test ops to test pasid attach/detach
  iommufd/selftest: Add a helper to get test device
  iommufd/selftest: Add set_dev_pasid in mock iommu
  iommufd: Allow allocating PASID-compatible domain
  iommu/vt-d: Add IOMMU_HWPT_ALLOC_PASID support
  iommufd: Enforce PASID-compatible domain for RID
  iommufd: Support pasid attach/replace
  iommufd: Enforce PASID-compatible domain in PASID path
  iommufd/device: Add pasid_attach array to track per-PASID attach
  ...
2025-04-01 18:03:46 -07:00
Michael Ellerman
64f7efb0f5 Merge branch 'topic/cxl' into next
This merges in the removal of the IBM CAPI "cxl" driver.
2025-04-02 11:07:44 +11:00
Linus Torvalds
8868485d6b More thermal control updates for 6.15-rc1
- Use dev_err_probe() helpers to simplify the init code in the Qoriq
    thermal driver (Frank Li).
 
  - Power down the Qoriq's TMU at suspend time (Alice Guo).
 
  - Add ipq5332, ipq5424 compatible to the QCom's tsens thermal driver
    and TSENS enable / calibration support for V2 (Praveenkumar I).
 
  - Add missing rk3328 mapping entry (Trevor Woerner).
 
  - Remove duplicate struct declaration from the thermal core header
    file (Xueqin Luo).
 
  - Disable the monitoring mode during suspend in the LVTS Mediatek
    driver to prevent temperature acquisition glitches (Nícolas F. R. A.
    Prado).
 
  - Disable Stage 3 thermal threshold in the LVTS Mediatek driver
    because it disables the suspend ability and does not have an
    interrupt handler (Nícolas F. R. A. Prado).
 
  - Fix low temperature offset interrupt in the LVTS Mediatek driver
    to prevent multiple interrupts from triggering when the system is at
    its normal functionning temperature (Nícolas F. R. A. Prado).
 
  - Enable interrupts in the LVTS Mediatek driver only on sensors that
    are in use (Nícolas F. R. A. Prado).
 
  - Add the BCM74110 compatible DT binding and the corresponding code
    to support a chip based on a different process node than previous
    chips (Florian Fainelli).
 
  - Correct indentation and style in DTS example (Krzysztof Kozlowski).
 
  - Unify hexadecimal annotatation in the rcar_gen3 driver (Niklas
    Söderlund).
 
  - Factor out the code logic to read fuses on Gen3 and Gen4 in the
    rcar_gen3 thermal driver (Niklas Söderlund).
 
  - Drop unused driver data from the QCom's spmi temperature alarm
    driver (Johan Hovold).
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Merge tag 'thermal-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more thermal control updates from Rafael Wysocki:
 "These are mostly assorted updates of thermal drivers used on ARM
  platforms:

   - Use dev_err_probe() helpers to simplify the init code in the Qoriq
     thermal driver (Frank Li)

   - Power down the Qoriq's TMU at suspend time (Alice Guo)

   - Add ipq5332, ipq5424 compatible to the QCom's tsens thermal driver
     and TSENS enable / calibration support for V2 (Praveenkumar I)

   - Add missing rk3328 mapping entry (Trevor Woerner)

   - Remove duplicate struct declaration from the thermal core header
     file (Xueqin Luo)

   - Disable the monitoring mode during suspend in the LVTS Mediatek
     driver to prevent temperature acquisition glitches (Nícolas F. R.
     A. Prado)

   - Disable Stage 3 thermal threshold in the LVTS Mediatek driver
     because it disables the suspend ability and does not have an
     interrupt handler (Nícolas F. R. A. Prado)

   - Fix low temperature offset interrupt in the LVTS Mediatek driver to
     prevent multiple interrupts from triggering when the system is at
     its normal functionning temperature (Nícolas F. R. A. Prado)

   - Enable interrupts in the LVTS Mediatek driver only on sensors that
     are in use (Nícolas F. R. A. Prado)

   - Add the BCM74110 compatible DT binding and the corresponding code
     to support a chip based on a different process node than previous
     chips (Florian Fainelli)

   - Correct indentation and style in DTS example (Krzysztof Kozlowski)

   - Unify hexadecimal annotatation in the rcar_gen3 driver (Niklas
     Söderlund)

   - Factor out the code logic to read fuses on Gen3 and Gen4 in the
     rcar_gen3 thermal driver (Niklas Söderlund)

   - Drop unused driver data from the QCom's spmi temperature alarm
     driver (Johan Hovold)"

* tag 'thermal-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal/drivers/qcom-spmi-temp-alarm: Drop unused driver data
  thermal: rcar_gen3: Reuse logic to read fuses on Gen3 and Gen4
  thermal: rcar_gen3: Use lowercase hex constants
  dt-bindings: thermal: Correct indentation and style in DTS example
  thermal/drivers/brcmstb_thermal: Add support for BCM74110
  dt-bindings: thermal: Update for BCM74110
  thermal/drivers/mediatek/lvts: Only update IRQ enable for valid sensors
  thermal/drivers/mediatek/lvts: Start sensor interrupts disabled
  thermal/drivers/mediatek/lvts: Disable low offset IRQ for minimum threshold
  thermal/drivers/mediatek/lvts: Disable Stage 3 thermal threshold
  thermal/drivers/mediatek/lvts: Disable monitor mode during suspend
  thermal: core: Remove duplicate struct declaration
  thermal/drivers/rockchip: Add missing rk3328 mapping entry
  thermal/drivers/tsens: Add TSENS enable and calibration support for V2
  dt-bindings: thermal: tsens: Add ipq5332, ipq5424 compatible
  thermal/drivers/qoriq: Power down TMU on system suspend
  thermal/drivers/qoriq: Use dev_err_probe() simplify the code
2025-04-01 16:51:44 -07:00
Linus Torvalds
1df7752800 I3C for 6.15
Core:
  - Fix a possible NULL pointer dereference due to IBI coming when the target
    driver is not yet probed.
 
 Drivers:
  - mipi-i3c-hci: Use I2C DMA-safe api
  - svc: add Nuvoton npcm845 support
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Merge tag 'i3c/for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

Pull i3c updates from Alexandre Belloni:
 "The silvaco driver gets support for the integration of the IP in the
  Nuvoton npcm845 SoC. There is also a fix for a possible NULL pointer
  dereference that can happen with early IBIs. Summary:

  Core:

    - Fix a possible NULL pointer dereference due to IBI coming when the
      target driver is not yet probed.

  Drivers:

    - mipi-i3c-hci: Use I2C DMA-safe api

    - svc: add Nuvoton npcm845 support"

* tag 'i3c/for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: Add NULL pointer check in i3c_master_queue_ibi()
  i3c: master: Drop duplicate check before calling OF APIs
  i3c: master: svc: Fix implicit fallthrough in svc_i3c_master_ibi_work()
  i3c: master: svc: Fix missing STOP for master request
  i3c: master: svc: Use readsb helper for reading MDB
  i3c: master: svc: Fix missing the IBI rules
  i3c: master: svc: Fix i3c_master_get_free_addr return check
  i3c: master: svc: Fix npcm845 DAA process corruption
  i3c: master: svc: Fix npcm845 invalid slvstart event
  i3c: master: svc: Fix npcm845 FIFO empty issue
  i3c: master: svc: Add support for Nuvoton npcm845 i3c
  dt-bindings: i3c: silvaco: Add npcm845 compatible string
  dt-bindings: i3c: dw: Add power-domains
  i3c: master: svc: Flush FIFO before sending Dynamic Address Assignment(DAA)
  i3c: mipi-i3c-hci: Use I2C DMA-safe api
  i3c: Remove the const qualifier from i2c_msg pointer in i2c_xfers API
  MAINTAINERS: Add Frank Li to Silvaco I3C
  MAINTAINERS: Remove Conor Culhane from Silvaco I3C
2025-04-01 16:47:47 -07:00
Kent Overstreet
e2a33a2a32 lib/sort.c: add _nonatomic() variants with cond_resched()
bcachefs calls sort() during recovery to sort all keys it found in the
journal, and this may be very large - gigabytes on large machines.

This has been causing "task blocked" warnings, so needs a
cond_resched().

[kent.overstreet@linux.dev: fix kerneldoc]
  Link: https://lkml.kernel.org/r/cgsr5a447pxqomc4gvznsp5yroqmif4omd7o5lsr2swifjhoic@yzjjrx2bvrq7
Link: https://lkml.kernel.org/r/20250326152606.2594920-1-kent.overstreet@linux.dev
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:20:46 -07:00
Jeff Xu
5796d3967c mseal sysmap: kernel config and header change
Patch series "mseal system mappings", v9.

As discussed during mseal() upstream process [1], mseal() protects the
VMAs of a given virtual memory range against modifications, such as the
read/write (RW) and no-execute (NX) bits.  For complete descriptions of
memory sealing, please see mseal.rst [2].

The mseal() is useful to mitigate memory corruption issues where a
corrupted pointer is passed to a memory management system.  For example,
such an attacker primitive can break control-flow integrity guarantees
since read-only memory that is supposed to be trusted can become writable
or .text pages can get remapped.

The system mappings are readonly only, memory sealing can protect them
from ever changing to writable or unmmap/remapped as different attributes.

System mappings such as vdso, vvar, vvar_vclock, vectors (arm
compat-mode), sigpage (arm compat-mode), are created by the kernel during
program initialization, and could be sealed after creation.

Unlike the aforementioned mappings, the uprobe mapping is not established
during program startup.  However, its lifetime is the same as the
process's lifetime [3].  It could be sealed from creation.

The vsyscall on x86-64 uses a special address (0xffffffffff600000), which
is outside the mm managed range.  This means mprotect, munmap, and mremap
won't work on the vsyscall.  Since sealing doesn't enhance the vsyscall's
security, it is skipped in this patch.  If we ever seal the vsyscall, it
is probably only for decorative purpose, i.e.  showing the 'sl' flag in
the /proc/pid/smaps.  For this patch, it is ignored.

It is important to note that the CHECKPOINT_RESTORE feature (CRIU) may
alter the system mappings during restore operations.  UML(User Mode Linux)
and gVisor, rr are also known to change the vdso/vvar mappings. 
Consequently, this feature cannot be universally enabled across all
systems.  As such, CONFIG_MSEAL_SYSTEM_MAPPINGS is disabled by default.

To support mseal of system mappings, architectures must define
CONFIG_ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS and update their special
mappings calls to pass mseal flag.  Additionally, architectures must
confirm they do not unmap/remap system mappings during the process
lifetime.  The existence of this flag for an architecture implies that it
does not require the remapping of thest system mappings during process
lifetime, so sealing these mappings is safe from a kernel perspective.

This version covers x86-64 and arm64 archiecture as minimum viable feature.

While no specific CPU hardware features are required for enable this
feature on an archiecture, memory sealing requires a 64-bit kernel.  Other
architectures can choose whether or not to adopt this feature.  Currently,
I'm not aware of any instances in the kernel code that actively
munmap/mremap a system mapping without a request from userspace.  The PPC
does call munmap when _install_special_mapping fails for vdso; however,
it's uncertain if this will ever fail for PPC - this needs to be
investigated by PPC in the future [4].  The UML kernel can add this
support when KUnit tests require it [5].

In this version, we've improved the handling of system mapping sealing
from previous versions, instead of modifying the _install_special_mapping
function itself, which would affect all architectures, we now call
_install_special_mapping with a sealing flag only within the specific
architecture that requires it.  This targeted approach offers two key
advantages: 1) It limits the code change's impact to the necessary
architectures, and 2) It aligns with the software architecture by keeping
the core memory management within the mm layer, while delegating the
decision of sealing system mappings to the individual architecture, which
is particularly relevant since 32-bit architectures never require sealing.

Prior to this patch series, we explored sealing special mappings from
userspace using glibc's dynamic linker.  This approach revealed several
issues:

- The PT_LOAD header may report an incorrect length for vdso, (smaller
  than its actual size).  The dynamic linker, which relies on PT_LOAD
  information to determine mapping size, would then split and partially
  seal the vdso mapping.  Since each architecture has its own vdso/vvar
  code, fixing this in the kernel would require going through each
  archiecture.  Our initial goal was to enable sealing readonly mappings,
  e.g.  .text, across all architectures, sealing vdso from kernel since
  creation appears to be simpler than sealing vdso at glibc.

- The [vvar] mapping header only contains address information, not
  length information.  Similar issues might exist for other special
  mappings.

- Mappings like uprobe are not covered by the dynamic linker, and there
  is no effective solution for them.

This feature's security enhancements will benefit ChromeOS, Android, and
other high security systems.

Testing:
This feature was tested on ChromeOS and Android for both x86-64 and ARM64.
- Enable sealing and verify vdso/vvar, sigpage, vector are sealed properly,
  i.e. "sl" shown in the smaps for those mappings, and mremap is blocked.
- Passing various automation tests (e.g. pre-checkin) on ChromeOS and
  Android to ensure the sealing doesn't affect the functionality of
  Chromebook and Android phone.

I also tested the feature on Ubuntu on x86-64:
- With config disabled, vdso/vvar is not sealed,
- with config enabled, vdso/vvar is sealed, and booting up Ubuntu is OK,
  normal operations such as browsing the web, open/edit doc are OK.

Link: https://lore.kernel.org/all/20240415163527.626541-1-jeffxu@chromium.org/ [1]
Link: Documentation/userspace-api/mseal.rst [2]
Link: https://lore.kernel.org/all/CABi2SkU9BRUnqf70-nksuMCQ+yyiWjo3fM4XkRkL-NrCZxYAyg@mail.gmail.com/ [3]
Link: https://lore.kernel.org/all/CABi2SkV6JJwJeviDLsq9N4ONvQ=EFANsiWkgiEOjyT9TQSt+HA@mail.gmail.com/ [4]
Link: https://lore.kernel.org/all/202502251035.239B85A93@keescook/ [5]


This patch (of 7):

Provide infrastructure to mseal system mappings.  Establish two kernel
configs (CONFIG_MSEAL_SYSTEM_MAPPINGS,
ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS) and VM_SEALED_SYSMAP macro for future
patches.

Link: https://lkml.kernel.org/r/20250305021711.3867874-1-jeffxu@google.com
Link: https://lkml.kernel.org/r/20250305021711.3867874-2-jeffxu@google.com
Signed-off-by: Jeff Xu <jeffxu@chromium.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrei Vagin <avagin@gmail.com>
Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Benjamin Berg <benjamin@sipsolutions.net>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Elliot Hughes <enh@google.com>
Cc: Florian Faineli <f.fainelli@gmail.com>
Cc: Greg Ungerer <gerg@kernel.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cc: Linus Waleij <linus.walleij@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Mike Rapoport <mike.rapoport@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Stephen Röttger <sroettger@google.com>
Cc: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:17:14 -07:00
Qi Zheng
02d9e1a204 mm: pgtable: remove tlb_remove_page_ptdesc()
The tlb_remove_ptdesc()/tlb_remove_table() is specially designed for page
table pages, and now all architectures have been converted to use it to
remove page table pages.  So let's remove tlb_remove_page_ptdesc(), it
currently has no users and should not be used for page table pages.

Link: https://lkml.kernel.org/r/3df04c8494339073b71be4acb2d92e108ecd1b60.1740454179.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:17:14 -07:00
Qi Zheng
1a03c275a3 mm: pgtable: change pt parameter of tlb_remove_ptdesc() to struct ptdesc*
All callers of tlb_remove_ptdesc() pass it a pointer of struct ptdesc, so
let's change the pt parameter from void * to struct ptdesc * to perform a
type safety check.

Link: https://lkml.kernel.org/r/60bb44299cf2d731df6592e446e7f694054d0dbe.1740454179.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Originally-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:17:13 -07:00
Qi Zheng
f21bb37afb mm: pgtable: make generic tlb_remove_table() use struct ptdesc
Patch series "remove tlb_remove_page_ptdesc()", v2.

As suggested by Peter Zijlstra below [1], this series aims to remove
tlb_remove_page_ptdesc().

: Fundamentally tlb_remove_page() is about removing *pages* as from a PTE,
: there should not be a page-table anywhere near here *ever*.
:
: Yes, some architectures use tlb_remove_page() for page-tables too, but
: that is more or less an implementation detail that can be fixed.

After this series, all architectures use tlb_remove_table() or
tlb_remove_ptdesc() to remove the page table pages.  In the future, once
all architectures using tlb_remove_table() have also converted to using
struct ptdesc (eg.  powerpc), it may be possible to use only
tlb_remove_ptdesc().

[1] https://lore.kernel.org/linux-mm/20250103111457.GC22934@noisy.programming.kicks-ass.net/


This patch (of 6):

Now only arm will call tlb_remove_ptdesc()/tlb_remove_table() when
CONFIG_MMU_GATHER_TABLE_FREE is disabled.  In this case, the type of the
table parameter is actually struct ptdesc * instead of struct page *.

Since struct ptdesc still overlaps with struct page and has not been
separated from it, forcing the table parameter to struct page * will not
cause any problems at this time.  But this is definitely incorrect and
needs to be fixed.  So just like the generic __tlb_remove_table(), let
generic tlb_remove_table() use struct ptdesc by default when
CONFIG_MMU_GATHER_TABLE_FREE is disabled.

Link: https://lkml.kernel.org/r/cover.1740454179.git.zhengqi.arch@bytedance.com
Link: https://lkml.kernel.org/r/5be8c3ab7bd68510bf0db4cf84010f4dfe372917.1740454179.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:17:13 -07:00
Yu Zhao
b98072af60 mm/hugetlb_vmemmap: fix memory loads ordering
Using x86_64 as an example, for a 32KB struct page[] area describing a 2MB
hugeTLB, HVO reduces the area to 4KB by the following steps:

1. Split the (r/w vmemmap) PMD mapping the area into 512 (r/w) PTEs;
2. For the 8 PTEs mapping the area, remap PTE 1-7 to the page mapped
   by PTE 0, and at the same time change the permission from r/w to
   r/o;
3. Free the pages PTE 1-7 used to map, hence the reduction from 32KB
   to 4KB.

However, the following race can happen due to improperly memory loads
ordering:
  CPU 1 (HVO)                     CPU 2 (speculative PFN walker)

  page_ref_freeze()
  synchronize_rcu()
                                  rcu_read_lock()
                                  page_is_fake_head() is false
  vmemmap_remap_pte()
  XXX: struct page[] becomes r/o

  page_ref_unfreeze()
                                  page_ref_count() is not zero

                                  atomic_add_unless(&page->_refcount)
                                  XXX: try to modify r/o struct page[]

Specifically, page_is_fake_head() must be ordered after page_ref_count()
on CPU 2 so that it can only return true for this case, to avoid the later
attempt to modify r/o struct page[].

This patch adds the missing memory barrier and makes the tests on
page_is_fake_head() and page_ref_count() done in the proper order.

Link: https://lkml.kernel.org/r/20250108074822.722696-1-yuzhao@google.com
Fixes: bd225530a4 ("mm/hugetlb_vmemmap: fix race with speculative PFN walkers")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reported-by: Will Deacon <will@kernel.org>
Closes: https://lore.kernel.org/20241128142028.GA3506@willie-the-truck/
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Acked-by: Will Deacon <will@kernel.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-04-01 15:14:42 -07:00
Linus Torvalds
28a1b05678 i2c-for-6.15-rc1
i2c-core updates (collected by Wolfram)
 
  - remove last user and unexport i2c_of_match_device()
  - irq usage cleanup from Jiri
 
 i2c-host updates (collected by Andi)
 
 Refactoring and cleanups
  - octeon, cadence, i801, pasemi, mlxbf, bcm-iproc: general
    refactorings
  - octeon: remove 10-bit address support
 
 Improvements
  - amd-asf: improved error handling
  - designware: use guard(mutex)
  - amd-asf, designware: update naming to follow latest specs
  - cadence: fix cleanup path in probe
  - i801: use MMIO and I/O mapping helpers to access registers
  - pxa: handle error after clk_prepare_enable
 
 New features
  - added i2c_10bit_addr_*_from_msg() and updated multiple drivers
  - omap: added multiplexer state handling
  - qcom-geni: update frequency configuration
  - qup: introduce DMA usage policy
 
 New hardware support
  - exynos: add support for Samsung exynos7870
  - k1: add support for spacemit k1 (new driver)
  - imx: add support for i.mx94 lpi2c
  - rk3x: add support for rk3562
  - designware: add support for Renesas RZ/N1D
 
 Multiplexers
  - ltc4306, reg: fix assignment in platform_driver structure
 
 at24 eeprom updates (collected by Bartosz)
 
 - add two new compatible entries to the DT binding document
 - drop of_match_ptr() and ACPI_PTR() macros
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Merge tag 'i2c-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "i2c-core updates (collected by Wolfram):
   - remove last user and unexport i2c_of_match_device()
   - irq usage cleanup from Jiri

  i2c-host updates (collected by Andi):

  Refactoring and cleanups:
   - octeon, cadence, i801, pasemi, mlxbf, bcm-iproc: general
     refactorings
   - octeon: remove 10-bit address support

  Improvements:
   - amd-asf: improved error handling
   - designware: use guard(mutex)
   - amd-asf, designware: update naming to follow latest specs
   - cadence: fix cleanup path in probe
   - i801: use MMIO and I/O mapping helpers to access registers
   - pxa: handle error after clk_prepare_enable

  New features:
   - added i2c_10bit_addr_*_from_msg() and updated multiple drivers
   - omap: added multiplexer state handling
   - qcom-geni: update frequency configuration
   - qup: introduce DMA usage policy

  New hardware support:
   - exynos: add support for Samsung exynos7870
   - k1: add support for spacemit k1 (new driver)
   - imx: add support for i.mx94 lpi2c
   - rk3x: add support for rk3562
   - designware: add support for Renesas RZ/N1D

  Multiplexers:
   - ltc4306, reg: fix assignment in platform_driver structure

  at24 eeprom updates (collected by Bartosz):
   - add two new compatible entries to the DT binding document
   - drop of_match_ptr() and ACPI_PTR() macros"

* tag 'i2c-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (50 commits)
  dt-bindings: i2c: snps,designware-i2c: describe Renesas RZ/N1D variant
  irqdomain: i2c: Switch to irq_find_mapping()
  i2c: iproc: Refactor prototype and remove redundant error checks
  i2c: qcom-geni: Update i2c frequency table to match hardware guidance
  i2c: mlxbf: Use readl_poll_timeout_atomic() for polling
  i2c: pasemi: Add registers bits and switch to BIT()
  i2c: k1: Initialize variable before use
  i2c: spacemit: add support for SpacemiT K1 SoC
  dt-bindings: i2c: spacemit: add support for K1 SoC
  i2c: omap: Add support for setting mux
  dt-bindings: i2c: omap: Add mux-states property
  i2c: octeon: remove 10-bit addressing support
  i2c: octeon: fix return commenting
  i2c: i801: Use MMIO if available
  i2c: i801: Switch to iomapped register access
  i2c: i801: Improve too small kill wait time in i801_check_post
  i2c: i801: Move i801_wait_intr and i801_wait_byte_done in the code
  i2c: i801: Cosmetic improvements
  i2c: cadence: Move reset_control_assert after pm_runtime_set_suspended in probe error path
  i2c: cadence: Simplify using devm_clk_get_enabled()
  ...
2025-04-01 14:21:02 -07:00
Linus Torvalds
91e5bfe317 dmaengine updates for v6.15
New support:
   - Microchip sama7d65 dma controller
   - Yaml conversion of atmel dma binding and Freescale Elo DMA Controller
     binding
 
  Core:
   - Remove device_prep_dma_imm_data() API as users are removed
   - Reduce scope of some less frequently used DMA request channel APIs with
     aim to cleanup these in future
 
  Updates:
   - Drop Fenghua Yu from idxd maintainers, as he changed jobs
   - AMD ptdma support for multiqueue and ae4dma deprecated PCI IDs removal
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Merge tag 'dmaengine-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "The dmaengine subsystem updates for this cycle consist of a new driver
  (Microchip) along with couple of yaml binding conversions, core api
  updates and bunch of driver updates etc.

  New HW support:

   - Microchip sama7d65 dma controller

   - Yaml conversion of atmel dma binding and Freescale Elo DMA
     Controller binding

  Core:

   - Remove device_prep_dma_imm_data() API as users are removed

   - Reduce scope of some less frequently used DMA request channel APIs
     with aim to cleanup these in future

  Updates:

   - Drop Fenghua Yu from idxd maintainers, as he changed jobs

   - AMD ptdma support for multiqueue and ae4dma deprecated PCI IDs
     removal"

* tag 'dmaengine-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (29 commits)
  dmaengine: ptdma: Utilize the AE4DMA engine's multi-queue functionality
  dmaengine: ae4dma: Use the MSI count and its corresponding IRQ number
  dmaengine: ae4dma: Remove deprecated PCI IDs
  dmaengine: Remove device_prep_dma_imm_data from struct dma_device
  dmaengine: ti: edma: support sw triggered chans in of_edma_xlate()
  dmaengine: ti: k3-udma: Enable second resource range for BCDMA and PKTDMA
  dmaengine: fsl-edma: free irq correctly in remove path
  dmaengine: fsl-edma: cleanup chan after dma_async_device_unregister
  dt-bindings: dma: snps,dw-axi-dmac: Allow devices to be marked as noncoherent
  dmaengine: dmatest: Fix dmatest waiting less when interrupted
  dt-bindings: dma: Convert fsl,elo*-dma to YAML
  dt-bindings: dma: fsl-mxs-dma: Add compatible string for i.MX8 chips
  dmaengine: Fix typo in comment
  dmaengine: ti: k3-udma-glue: Drop skip_fdq argument from k3_udma_glue_reset_rx_chn
  dmaengine: bcm2835-dma: fix warning when CONFIG_PM=n
  dt-bindings: dma: fsl,edma: Add i.MX94 support
  dt-bindings: dma: atmel: add microchip,sama7d65-dma
  dmaengine: img-mdc: remove incorrect of_match_ptr annotation
  dmaengine: idxd: Delete unnecessary NULL check
  dmaengine: pxa: Enable compile test
  ...
2025-04-01 12:57:14 -07:00
Linus Torvalds
e63a165308 phy-for-6.15
- New Support
   - Qualcomm X1P42100 PCIe Gen4x4, QCS615 qmp usbc,  PCIe UNIPHY 28LP
     driver, SM8750 QMP UFS PHY
   - Rockchip rk3576 hdptx, rk3562 naneng-combo support
   - Samsung MIPI D-/C-PHY driver, ExynosAutov920 ufs phy driver
 
 - Updates
   - Samsung USB3 Type-C lane orientation detection and configuration for
     Google gs101
   - Qualcomm support for dual lane PHY support for QCS8300 SoC
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Merge tag 'phy-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

Pull phy updates from Vinod Koul:
 "A fairly moderate sized request for the generic phy subsystem with
  some new device and driver support along with driver updates with
  Samsung and Qualcomm ones being major ones.

  New HW Support:

   - Qualcomm X1P42100 PCIe Gen4x4, QCS615 qmp usbc, PCIe UNIPHY 28LP
     driver, SM8750 QMP UFS PHY

   - Rockchip rk3576 hdptx, rk3562 naneng-combo support

   - Samsung MIPI D-/C-PHY driver, ExynosAutov920 ufs phy driver

  Updates:

   - Samsung USB3 Type-C lane orientation detection and configuration
     for Google gs101

   - Qualcomm support for dual lane PHY support for QCS8300 SoC"

* tag 'phy-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (47 commits)
  phy: rockchip-naneng-combo: Support rk3562
  dt-bindings: phy: rockchip: Add rk3562 naneng-combophy compatible
  phy: rockchip: Add Samsung MIPI D-/C-PHY driver
  dt-bindings: phy: Add Rockchip MIPI C-/D-PHY schema
  phy: qcom: uniphy-28lp: add COMMON_CLK dependency
  phy: rockchip: usbdp: Remove unnecessary bool conversion
  phy: rockchip: usbdp: Avoid call hpd_event_trigger in dp_phy_init
  phy: rockchip: usbdp: Only verify link rates/lanes/voltage when the corresponding set flags are set
  phy: qcom-qmp-pcie: add dual lane PHY support for QCS8300
  dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Document the QCS8300 QMP PCIe PHY Gen4 x2
  phy: qcom-qmp-ufs: Add PHY Configuration support for sm8750
  dt-bindings: phy: qcom,sc8280xp-qmp-ufs-phy: document the SM8750 QMP UFS PHY
  phy: qcom: Introduce PCIe UNIPHY 28LP driver
  dt-bindings: phy: qcom,uniphy-pcie: Document PCIe uniphy
  phy: qcom: qmp-usbc: Add qmp configuration for QCS615
  phy: freescale: imx8m-pcie: assert phy reset and perst in power off
  phy: freescale: imx8m-pcie: cleanup reset logic
  phy: core: Remove unused phy_pm_runtime_(allow|forbid)
  dt-bindings: phy: document Allwinner A523 USB-2.0 PHY
  phy: phy-rockchip-samsung-hdptx: Add support for RK3576
  ...
2025-04-01 12:47:11 -07:00
Linus Torvalds
4d31167e84 soundwire updates for 6.15
- Support for SoundWire Bulk Register Access (BRA) protocol in core
    along with Intel driver support and ASoC bits required.
  - AMD driver updates and support for ACP 7.0 and 7.1 platforms
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Merge tag 'soundwire-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

Pull soundwire updates from Vinod Koul:

 - Support for SoundWire Bulk Register Access (BRA) protocol in core
   along with Intel driver support and ASoC bits required

 - AMD driver updates and support for ACP 7.0 and 7.1 platforms

* tag 'soundwire-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (28 commits)
  soundwire: take in count the bandwidth of a prepared stream
  ASoC: rt711-sdca: add DP0 support
  soundwire: debugfs: add interface for BPT/BRA transfers
  ASoC: SOF: Intel: hda-sdw-bpt: add CHAIN_DMA support
  soundwire: intel_ace2x: add BPT send_async/wait callbacks
  soundwire: intel: add BPT context definition
  ASoC: SOF: Intel: hda-sdw-bpt: add helpers for SoundWire BPT DMA
  soundwire: intel_auxdevice: add indirection for BPT send_async/wait
  soundwire: cadence: add BTP/BRA helpers to format data
  soundwire: bus: add bpt_stream pointer
  soundwire: bus: add send_async/wait APIs for BPT protocol
  soundwire: stream: reuse existing code for BPT stream
  soundwire: stream: special-case the bus compute_params() routine
  soundwire: stream: extend sdw_alloc_stream() to take 'type' parameter
  soundwire: extend sdw_stream_type to BPT
  soundwire: cadence: add BTP support for DP0
  Documentation: driver: add SoundWire BRA description
  soundwire: amd: change the log level for command response log
  soundwire: slave: fix an OF node reference leak in soundwire slave device
  soundwire: Use str_enable_disable-like helpers
  ...
2025-04-01 12:43:13 -07:00
Linus Torvalds
25601e8544 Char/Misc/IIO driver updates for 6.15-rc1
Here is the big set of char, misc, iio, and other smaller driver
 subsystems for 6.15-rc1.  Lots of stuff in here, including:
   - loads of IIO changes and driver updates
   - counter driver updates
   - w1 driver updates
   - faux conversions for some drivers that were abusing the platform bus
     interface
   - coresight driver updates
   - rust miscdevice binding updates based on real-world-use
   - other minor driver updates
 
 All of these have been in linux-next with no reported issues for quite a
 while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc / IIO driver updates from Greg KH:
 "Here is the big set of char, misc, iio, and other smaller driver
  subsystems for 6.15-rc1. Lots of stuff in here, including:

   - loads of IIO changes and driver updates

   - counter driver updates

   - w1 driver updates

   - faux conversions for some drivers that were abusing the platform
     bus interface

   - coresight driver updates

   - rust miscdevice binding updates based on real-world-use

   - other minor driver updates

  All of these have been in linux-next with no reported issues for quite
  a while"

* tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  samples: rust_misc_device: fix markup in top-level docs
  Coresight: Fix a NULL vs IS_ERR() bug in probe
  misc: lis3lv02d: convert to use faux_device
  tlclk: convert to use faux_device
  regulator: dummy: convert to use the faux device interface
  bus: mhi: host: Fix race between unprepare and queue_buf
  coresight: configfs: Constify struct config_item_type
  doc: iio: ad7380: describe offload support
  iio: ad7380: add support for SPI offload
  iio: light: Add check for array bounds in veml6075_read_int_time_ms
  iio: adc: ti-ads7924 Drop unnecessary function parameters
  staging: iio: ad9834: Use devm_regulator_get_enable()
  staging: iio: ad9832: Use devm_regulator_get_enable()
  iio: gyro: bmg160_spi: add of_match_table
  dt-bindings: iio: adc: Add i.MX94 and i.MX95 support
  iio: adc: ad7768-1: remove unnecessary locking
  Documentation: ABI: add wideband filter type to sysfs-bus-iio
  iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset
  iio: adc: ad7768-1: Fix conversion result sign
  iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()
  ...
2025-04-01 11:26:08 -07:00
Linus Torvalds
2cd5769fb0 Driver core updates for 6.15-rc1
Here is the big set of driver core updates for 6.15-rc1.  Lots of stuff
 happened this development cycle, including:
   - kernfs scaling changes to make it even faster thanks to rcu
   - bin_attribute constify work in many subsystems
   - faux bus minor tweaks for the rust bindings
   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers.  These are all
     due to people actually trying to use the bindings that were in 6.14.
   - make Rafael and Danilo full co-maintainers of the driver core
     codebase
   - other minor fixes and updates.
 
 This has been in linux-next for a while now, with the only reported
 issue being some merge conflicts with the rust tree.  Depending on which
 tree you pull first, you will have conflicts in one of them.  The merge
 resolution has been in linux-next as an example of what to do, or can be
 found here:
 	https://lore.kernel.org/r/CANiq72n3Xe8JcnEjirDhCwQgvWoE65dddWecXnfdnbrmuah-RQ@mail.gmail.com
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updatesk from Greg KH:
 "Here is the big set of driver core updates for 6.15-rc1. Lots of stuff
  happened this development cycle, including:

   - kernfs scaling changes to make it even faster thanks to rcu

   - bin_attribute constify work in many subsystems

   - faux bus minor tweaks for the rust bindings

   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers. These are all
     due to people actually trying to use the bindings that were in
     6.14.

   - make Rafael and Danilo full co-maintainers of the driver core
     codebase

   - other minor fixes and updates"

* tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (52 commits)
  rust: platform: require Send for Driver trait implementers
  rust: pci: require Send for Driver trait implementers
  rust: platform: impl Send + Sync for platform::Device
  rust: pci: impl Send + Sync for pci::Device
  rust: platform: fix unrestricted &mut platform::Device
  rust: pci: fix unrestricted &mut pci::Device
  rust: device: implement device context marker
  rust: pci: use to_result() in enable_device_mem()
  MAINTAINERS: driver core: mark Rafael and Danilo as co-maintainers
  rust/kernel/faux: mark Registration methods inline
  driver core: faux: only create the device if probe() succeeds
  rust/faux: Add missing parent argument to Registration::new()
  rust/faux: Drop #[repr(transparent)] from faux::Registration
  rust: io: fix devres test with new io accessor functions
  rust: io: rename `io::Io` accessors
  kernfs: Move dput() outside of the RCU section.
  efi: rci2: mark bin_attribute as __ro_after_init
  rapidio: constify 'struct bin_attribute'
  firmware: qemu_fw_cfg: constify 'struct bin_attribute'
  powerpc/perf/hv-24x7: Constify 'struct bin_attribute'
  ...
2025-04-01 11:02:03 -07:00
Linus Torvalds
d6b02199cd - The 7 patch series "powerpc/crash: use generic crashkernel
reservation" from Sourabh Jain changes powerpc's kexec code to use more
   of the generic layers.
 
 - The 2 patch series "get_maintainer: report subsystem status
   separately" from Vlastimil Babka makes some long-requested improvements
   to the get_maintainer output.
 
 - The 4 patch series "ucount: Simplify refcounting with rcuref_t" from
   Sebastian Siewior cleans up and optimizing the refcounting in the ucount
   code.
 
 - The 12 patch series "reboot: support runtime configuration of
   emergency hw_protection action" from Ahmad Fatoum improves the ability
   for a driver to perform an emergency system shutdown or reboot.
 
 - The 16 patch series "Converge on using secs_to_jiffies() part two"
   from Easwar Hariharan performs further migrations from
   msecs_to_jiffies() to secs_to_jiffies().
 
 - The 7 patch series "lib/interval_tree: add some test cases and
   cleanup" from Wei Yang permits more userspace testing of kernel library
   code, adds some more tests and performs some cleanups.
 
 - The 2 patch series "hung_task: Dump the blocking task stacktrace" from
   Masami Hiramatsu arranges for the hung_task detector to dump the stack
   of the blocking task and not just that of the blocked task.
 
 - The 4 patch series "resource: Split and use DEFINE_RES*() macros" from
   Andy Shevchenko provides some cleanups to the resource definition
   macros.
 
 - Plus the usual shower of singleton patches - please see the individual
   changelogs for details.
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Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - The series "powerpc/crash: use generic crashkernel reservation" from
   Sourabh Jain changes powerpc's kexec code to use more of the generic
   layers.

 - The series "get_maintainer: report subsystem status separately" from
   Vlastimil Babka makes some long-requested improvements to the
   get_maintainer output.

 - The series "ucount: Simplify refcounting with rcuref_t" from
   Sebastian Siewior cleans up and optimizing the refcounting in the
   ucount code.

 - The series "reboot: support runtime configuration of emergency
   hw_protection action" from Ahmad Fatoum improves the ability for a
   driver to perform an emergency system shutdown or reboot.

 - The series "Converge on using secs_to_jiffies() part two" from Easwar
   Hariharan performs further migrations from msecs_to_jiffies() to
   secs_to_jiffies().

 - The series "lib/interval_tree: add some test cases and cleanup" from
   Wei Yang permits more userspace testing of kernel library code, adds
   some more tests and performs some cleanups.

 - The series "hung_task: Dump the blocking task stacktrace" from Masami
   Hiramatsu arranges for the hung_task detector to dump the stack of
   the blocking task and not just that of the blocked task.

 - The series "resource: Split and use DEFINE_RES*() macros" from Andy
   Shevchenko provides some cleanups to the resource definition macros.

 - Plus the usual shower of singleton patches - please see the
   individual changelogs for details.

* tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits)
  mailmap: consolidate email addresses of Alexander Sverdlin
  fs/procfs: fix the comment above proc_pid_wchan()
  relay: use kasprintf() instead of fixed buffer formatting
  resource: replace open coded variant of DEFINE_RES()
  resource: replace open coded variants of DEFINE_RES_*_NAMED()
  resource: replace open coded variant of DEFINE_RES_NAMED_DESC()
  resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED()
  samples: add hung_task detector mutex blocking sample
  hung_task: show the blocker task if the task is hung on mutex
  kexec_core: accept unaccepted kexec segments' destination addresses
  watchdog/perf: optimize bytes copied and remove manual NUL-termination
  lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap()
  lib/interval_tree: skip the check before go to the right subtree
  lib/interval_tree: add test case for span iteration
  lib/interval_tree: add test case for interval_tree_iter_xxx() helpers
  lib/rbtree: add random seed
  lib/rbtree: split tests
  lib/rbtree: enable userland test suite for rbtree related data structure
  checkpatch: describe --min-conf-desc-length
  scripts/gdb/symbols: determine KASLR offset on s390
  ...
2025-04-01 10:06:52 -07:00
Linus Torvalds
eb0ece1602 - The 6 patch series "Enable strict percpu address space checks" from
Uros Bizjak uses x86 named address space qualifiers to provide
   compile-time checking of percpu area accesses.
 
   This has caused a small amount of fallout - two or three issues were
   reported.  In all cases the calling code was founf to be incorrect.
 
 - The 4 patch series "Some cleanup for memcg" from Chen Ridong
   implements some relatively monir cleanups for the memcontrol code.
 
 - The 17 patch series "mm: fixes for device-exclusive entries (hmm)"
   from David Hildenbrand fixes a boatload of issues which David found then
   using device-exclusive PTE entries when THP is enabled.  More work is
   needed, but this makes thins better - our own HMM selftests now succeed.
 
 - The 2 patch series "mm: zswap: remove z3fold and zbud" from Yosry
   Ahmed remove the z3fold and zbud implementations.  They have been
   deprecated for half a year and nobody has complained.
 
 - The 5 patch series "mm: further simplify VMA merge operation" from
   Lorenzo Stoakes implements numerous simplifications in this area.  No
   runtime effects are anticipated.
 
 - The 4 patch series "mm/madvise: remove redundant mmap_lock operations
   from process_madvise()" from SeongJae Park rationalizes the locking in
   the madvise() implementation.  Performance gains of 20-25% were observed
   in one MADV_DONTNEED microbenchmark.
 
 - The 12 patch series "Tiny cleanup and improvements about SWAP code"
   from Baoquan He contains a number of touchups to issues which Baoquan
   noticed when working on the swap code.
 
 - The 2 patch series "mm: kmemleak: Usability improvements" from Catalin
   Marinas implements a couple of improvements to the kmemleak user-visible
   output.
 
 - The 2 patch series "mm/damon/paddr: fix large folios access and
   schemes handling" from Usama Arif provides a couple of fixes for DAMON's
   handling of large folios.
 
 - The 3 patch series "mm/damon/core: fix wrong and/or useless
   damos_walk() behaviors" from SeongJae Park fixes a few issues with the
   accuracy of kdamond's walking of DAMON regions.
 
 - The 3 patch series "expose mapping wrprotect, fix fb_defio use" from
   Lorenzo Stoakes changes the interaction between framebuffer deferred-io
   and core MM.  No functional changes are anticipated - this is
   preparatory work for the future removal of page structure fields.
 
 - The 4 patch series "mm/damon: add support for hugepage_size DAMOS
   filter" from Usama Arif adds a DAMOS filter which permits the filtering
   by huge page sizes.
 
 - The 4 patch series "mm: permit guard regions for file-backed/shmem
   mappings" from Lorenzo Stoakes extends the guard region feature from its
   present "anon mappings only" state.  The feature now covers shmem and
   file-backed mappings.
 
 - The 4 patch series "mm: batched unmap lazyfree large folios during
   reclamation" from Barry Song cleans up and speeds up the unmapping for
   pte-mapped large folios.
 
 - The 18 patch series "reimplement per-vma lock as a refcount" from
   Suren Baghdasaryan puts the vm_lock back into the vma.  Our reasons for
   pulling it out were largely bogus and that change made the code more
   messy.  This patchset provides small (0-10%) improvements on one
   microbenchmark.
 
 - The 5 patch series "Docs/mm/damon: misc DAMOS filters documentation
   fixes and improves" from SeongJae Park does some maintenance work on the
   DAMON docs.
 
 - The 27 patch series "hugetlb/CMA improvements for large systems" from
   Frank van der Linden addresses a pile of issues which have been observed
   when using CMA on large machines.
 
 - The 2 patch series "mm/damon: introduce DAMOS filter type for unmapped
   pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the
   page's mapped/unmapped status.
 
 - The 19 patch series "zsmalloc/zram: there be preemption" from Sergey
   Senozhatsky teaches zram to run its compression and decompression
   operations preemptibly.
 
 - The 12 patch series "selftests/mm: Some cleanups from trying to run
   them" from Brendan Jackman fixes a pile of unrelated issues which
   Brendan encountered while runnimg our selftests.
 
 - The 2 patch series "fs/proc/task_mmu: add guard region bit to pagemap"
   from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to
   determine whether a particular page is a guard page.
 
 - The 7 patch series "mm, swap: remove swap slot cache" from Kairui Song
   removes the swap slot cache from the allocation path - it simply wasn't
   being effective.
 
 - The 5 patch series "mm: cleanups for device-exclusive entries (hmm)"
   from David Hildenbrand implements a number of unrelated cleanups in this
   code.
 
 - The 5 patch series "mm: Rework generic PTDUMP configs" from Anshuman
   Khandual implements a number of preparatoty cleanups to the
   GENERIC_PTDUMP Kconfig logic.
 
 - The 8 patch series "mm/damon: auto-tune aggregation interval" from
   SeongJae Park implements a feedback-driven automatic tuning feature for
   DAMON's aggregation interval tuning.
 
 - The 5 patch series "Fix lazy mmu mode" from Ryan Roberts fixes some
   issues in powerpc, sparc and x86 lazy MMU implementations.  Ryan did
   this in preparation for implementing lazy mmu mode for arm64 to optimize
   vmalloc.
 
 - The 2 patch series "mm/page_alloc: Some clarifications for migratetype
   fallback" from Brendan Jackman reworks some commentary to make the code
   easier to follow.
 
 - The 3 patch series "page_counter cleanup and size reduction" from
   Shakeel Butt cleans up the page_counter code and fixes a size increase
   which we accidentally added late last year.
 
 - The 3 patch series "Add a command line option that enables control of
   how many threads should be used to allocate huge pages" from Thomas
   Prescher does that.  It allows the careful operator to significantly
   reduce boot time by tuning the parallalization of huge page
   initialization.
 
 - The 3 patch series "Fix calculations in trace_balance_dirty_pages()
   for cgwb" from Tang Yizhou fixes the tracing output from the dirty page
   balancing code.
 
 - The 9 patch series "mm/damon: make allow filters after reject filters
   useful and intuitive" from SeongJae Park improves the handling of allow
   and reject filters.  Behaviour is made more consistent and the
   documention is updated accordingly.
 
 - The 5 patch series "Switch zswap to object read/write APIs" from Yosry
   Ahmed updates zswap to the new object read/write APIs and thus permits
   the removal of some legacy code from zpool and zsmalloc.
 
 - The 6 patch series "Some trivial cleanups for shmem" from Baolin Wang
   does as it claims.
 
 - The 20 patch series "fs/dax: Fix ZONE_DEVICE page reference counts"
   from Alistair Popple regularizes the weird ZONE_DEVICE page refcount
   handling in DAX, permittig the removal of a number of special-case
   checks.
 
 - The 4 patch series "refactor mremap and fix bug" from Lorenzo Stoakes
   is a preparatoty refactoring and cleanup of the mremap() code.
 
 - The 20 patch series "mm: MM owner tracking for large folios (!hugetlb)
   + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in
   which we determine whether a large folio is known to be mapped
   exclusively into a single MM.
 
 - The 8 patch series "mm/damon: add sysfs dirs for managing DAMOS
   filters based on handling layers" from SeongJae Park adds a couple of
   new sysfs directories to ease the management of DAMON/DAMOS filters.
 
 - The 13 patch series "arch, mm: reduce code duplication in mem_init()"
   from Mike Rapoport consolidates many per-arch implementations of
   mem_init() into code generic code, where that is practical.
 
 - The 13 patch series "mm/damon/sysfs: commit parameters online via
   damon_call()" from SeongJae Park continues the cleaning up of sysfs
   access to DAMON internal data.
 
 - The 3 patch series "mm: page_ext: Introduce new iteration API" from
   Luiz Capitulino reworks the page_ext initialization to fix a boot-time
   crash which was observed with an unusual combination of compile and
   cmdline options.
 
 - The 8 patch series "Buddy allocator like (or non-uniform) folio split"
   from Zi Yan reworks the code to split a folio into smaller folios.  The
   main benefit is lessened memory consumption: fewer post-split folios are
   generated.
 
 - The 2 patch series "Minimize xa_node allocation during xarry split"
   from Zi Yan reduces the number of xarray xa_nodes which are generated
   during an xarray split.
 
 - The 2 patch series "drivers/base/memory: Two cleanups" from Gavin Shan
   performs some maintenance work on the drivers/base/memory code.
 
 - The 3 patch series "Add tracepoints for lowmem reserves, watermarks
   and totalreserve_pages" from Martin Liu adds some more tracepoints to
   the page allocator code.
 
 - The 4 patch series "mm/madvise: cleanup requests validations and
   classifications" from SeongJae Park cleans up some warts which SeongJae
   observed during his earlier madvise work.
 
 - The 3 patch series "mm/hwpoison: Fix regressions in memory failure
   handling" from Shuai Xue addresses two quite serious regressions which
   Shuai has observed in the memory-failure implementation.
 
 - The 5 patch series "mm: reliable huge page allocator" from Johannes
   Weiner makes huge page allocations cheaper and more reliable by reducing
   fragmentation.
 
 - The 5 patch series "Minor memcg cleanups & prep for memdescs" from
   Matthew Wilcox is preparatory work for the future implementation of
   memdescs.
 
 - The 4 patch series "track memory used by balloon drivers" from Nico
   Pache introduces a way to track memory used by our various balloon
   drivers.
 
 - The 2 patch series "mm/damon: introduce DAMOS filter type for active
   pages" from Nhat Pham permits users to filter for active/inactive pages,
   separately for file and anon pages.
 
 - The 2 patch series "Adding Proactive Memory Reclaim Statistics" from
   Hao Jia separates the proactive reclaim statistics from the direct
   reclaim statistics.
 
 - The 2 patch series "mm/vmscan: don't try to reclaim hwpoison folio"
   from Jinjiang Tu fixes our handling of hwpoisoned pages within the
   reclaim code.
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Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - The series "Enable strict percpu address space checks" from Uros
   Bizjak uses x86 named address space qualifiers to provide
   compile-time checking of percpu area accesses.

   This has caused a small amount of fallout - two or three issues were
   reported. In all cases the calling code was found to be incorrect.

 - The series "Some cleanup for memcg" from Chen Ridong implements some
   relatively monir cleanups for the memcontrol code.

 - The series "mm: fixes for device-exclusive entries (hmm)" from David
   Hildenbrand fixes a boatload of issues which David found then using
   device-exclusive PTE entries when THP is enabled. More work is
   needed, but this makes thins better - our own HMM selftests now
   succeed.

 - The series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed
   remove the z3fold and zbud implementations. They have been deprecated
   for half a year and nobody has complained.

 - The series "mm: further simplify VMA merge operation" from Lorenzo
   Stoakes implements numerous simplifications in this area. No runtime
   effects are anticipated.

 - The series "mm/madvise: remove redundant mmap_lock operations from
   process_madvise()" from SeongJae Park rationalizes the locking in the
   madvise() implementation. Performance gains of 20-25% were observed
   in one MADV_DONTNEED microbenchmark.

 - The series "Tiny cleanup and improvements about SWAP code" from
   Baoquan He contains a number of touchups to issues which Baoquan
   noticed when working on the swap code.

 - The series "mm: kmemleak: Usability improvements" from Catalin
   Marinas implements a couple of improvements to the kmemleak
   user-visible output.

 - The series "mm/damon/paddr: fix large folios access and schemes
   handling" from Usama Arif provides a couple of fixes for DAMON's
   handling of large folios.

 - The series "mm/damon/core: fix wrong and/or useless damos_walk()
   behaviors" from SeongJae Park fixes a few issues with the accuracy of
   kdamond's walking of DAMON regions.

 - The series "expose mapping wrprotect, fix fb_defio use" from Lorenzo
   Stoakes changes the interaction between framebuffer deferred-io and
   core MM. No functional changes are anticipated - this is preparatory
   work for the future removal of page structure fields.

 - The series "mm/damon: add support for hugepage_size DAMOS filter"
   from Usama Arif adds a DAMOS filter which permits the filtering by
   huge page sizes.

 - The series "mm: permit guard regions for file-backed/shmem mappings"
   from Lorenzo Stoakes extends the guard region feature from its
   present "anon mappings only" state. The feature now covers shmem and
   file-backed mappings.

 - The series "mm: batched unmap lazyfree large folios during
   reclamation" from Barry Song cleans up and speeds up the unmapping
   for pte-mapped large folios.

 - The series "reimplement per-vma lock as a refcount" from Suren
   Baghdasaryan puts the vm_lock back into the vma. Our reasons for
   pulling it out were largely bogus and that change made the code more
   messy. This patchset provides small (0-10%) improvements on one
   microbenchmark.

 - The series "Docs/mm/damon: misc DAMOS filters documentation fixes and
   improves" from SeongJae Park does some maintenance work on the DAMON
   docs.

 - The series "hugetlb/CMA improvements for large systems" from Frank
   van der Linden addresses a pile of issues which have been observed
   when using CMA on large machines.

 - The series "mm/damon: introduce DAMOS filter type for unmapped pages"
   from SeongJae Park enables users of DMAON/DAMOS to filter my the
   page's mapped/unmapped status.

 - The series "zsmalloc/zram: there be preemption" from Sergey
   Senozhatsky teaches zram to run its compression and decompression
   operations preemptibly.

 - The series "selftests/mm: Some cleanups from trying to run them" from
   Brendan Jackman fixes a pile of unrelated issues which Brendan
   encountered while runnimg our selftests.

 - The series "fs/proc/task_mmu: add guard region bit to pagemap" from
   Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to
   determine whether a particular page is a guard page.

 - The series "mm, swap: remove swap slot cache" from Kairui Song
   removes the swap slot cache from the allocation path - it simply
   wasn't being effective.

 - The series "mm: cleanups for device-exclusive entries (hmm)" from
   David Hildenbrand implements a number of unrelated cleanups in this
   code.

 - The series "mm: Rework generic PTDUMP configs" from Anshuman Khandual
   implements a number of preparatoty cleanups to the GENERIC_PTDUMP
   Kconfig logic.

 - The series "mm/damon: auto-tune aggregation interval" from SeongJae
   Park implements a feedback-driven automatic tuning feature for
   DAMON's aggregation interval tuning.

 - The series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in
   powerpc, sparc and x86 lazy MMU implementations. Ryan did this in
   preparation for implementing lazy mmu mode for arm64 to optimize
   vmalloc.

 - The series "mm/page_alloc: Some clarifications for migratetype
   fallback" from Brendan Jackman reworks some commentary to make the
   code easier to follow.

 - The series "page_counter cleanup and size reduction" from Shakeel
   Butt cleans up the page_counter code and fixes a size increase which
   we accidentally added late last year.

 - The series "Add a command line option that enables control of how
   many threads should be used to allocate huge pages" from Thomas
   Prescher does that. It allows the careful operator to significantly
   reduce boot time by tuning the parallalization of huge page
   initialization.

 - The series "Fix calculations in trace_balance_dirty_pages() for cgwb"
   from Tang Yizhou fixes the tracing output from the dirty page
   balancing code.

 - The series "mm/damon: make allow filters after reject filters useful
   and intuitive" from SeongJae Park improves the handling of allow and
   reject filters. Behaviour is made more consistent and the documention
   is updated accordingly.

 - The series "Switch zswap to object read/write APIs" from Yosry Ahmed
   updates zswap to the new object read/write APIs and thus permits the
   removal of some legacy code from zpool and zsmalloc.

 - The series "Some trivial cleanups for shmem" from Baolin Wang does as
   it claims.

 - The series "fs/dax: Fix ZONE_DEVICE page reference counts" from
   Alistair Popple regularizes the weird ZONE_DEVICE page refcount
   handling in DAX, permittig the removal of a number of special-case
   checks.

 - The series "refactor mremap and fix bug" from Lorenzo Stoakes is a
   preparatoty refactoring and cleanup of the mremap() code.

 - The series "mm: MM owner tracking for large folios (!hugetlb) +
   CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in
   which we determine whether a large folio is known to be mapped
   exclusively into a single MM.

 - The series "mm/damon: add sysfs dirs for managing DAMOS filters based
   on handling layers" from SeongJae Park adds a couple of new sysfs
   directories to ease the management of DAMON/DAMOS filters.

 - The series "arch, mm: reduce code duplication in mem_init()" from
   Mike Rapoport consolidates many per-arch implementations of
   mem_init() into code generic code, where that is practical.

 - The series "mm/damon/sysfs: commit parameters online via
   damon_call()" from SeongJae Park continues the cleaning up of sysfs
   access to DAMON internal data.

 - The series "mm: page_ext: Introduce new iteration API" from Luiz
   Capitulino reworks the page_ext initialization to fix a boot-time
   crash which was observed with an unusual combination of compile and
   cmdline options.

 - The series "Buddy allocator like (or non-uniform) folio split" from
   Zi Yan reworks the code to split a folio into smaller folios. The
   main benefit is lessened memory consumption: fewer post-split folios
   are generated.

 - The series "Minimize xa_node allocation during xarry split" from Zi
   Yan reduces the number of xarray xa_nodes which are generated during
   an xarray split.

 - The series "drivers/base/memory: Two cleanups" from Gavin Shan
   performs some maintenance work on the drivers/base/memory code.

 - The series "Add tracepoints for lowmem reserves, watermarks and
   totalreserve_pages" from Martin Liu adds some more tracepoints to the
   page allocator code.

 - The series "mm/madvise: cleanup requests validations and
   classifications" from SeongJae Park cleans up some warts which
   SeongJae observed during his earlier madvise work.

 - The series "mm/hwpoison: Fix regressions in memory failure handling"
   from Shuai Xue addresses two quite serious regressions which Shuai
   has observed in the memory-failure implementation.

 - The series "mm: reliable huge page allocator" from Johannes Weiner
   makes huge page allocations cheaper and more reliable by reducing
   fragmentation.

 - The series "Minor memcg cleanups & prep for memdescs" from Matthew
   Wilcox is preparatory work for the future implementation of memdescs.

 - The series "track memory used by balloon drivers" from Nico Pache
   introduces a way to track memory used by our various balloon drivers.

 - The series "mm/damon: introduce DAMOS filter type for active pages"
   from Nhat Pham permits users to filter for active/inactive pages,
   separately for file and anon pages.

 - The series "Adding Proactive Memory Reclaim Statistics" from Hao Jia
   separates the proactive reclaim statistics from the direct reclaim
   statistics.

 - The series "mm/vmscan: don't try to reclaim hwpoison folio" from
   Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim
   code.

* tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (431 commits)
  mm/page_alloc: remove unnecessary __maybe_unused in order_to_pindex()
  x86/mm: restore early initialization of high_memory for 32-bits
  mm/vmscan: don't try to reclaim hwpoison folio
  mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper
  cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
  mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
  selftests/mm: speed up split_huge_page_test
  selftests/mm: uffd-unit-tests support for hugepages > 2M
  docs/mm/damon/design: document active DAMOS filter type
  mm/damon: implement a new DAMOS filter type for active pages
  fs/dax: don't disassociate zero page entries
  MM documentation: add "Unaccepted" meminfo entry
  selftests/mm: add commentary about 9pfs bugs
  fork: use __vmalloc_node() for stack allocation
  docs/mm: Physical Memory: Populate the "Zones" section
  xen: balloon: update the NR_BALLOON_PAGES state
  hv_balloon: update the NR_BALLOON_PAGES state
  balloon_compaction: update the NR_BALLOON_PAGES state
  meminfo: add a per node counter for balloon drivers
  mm: remove references to folio in __memcg_kmem_uncharge_page()
  ...
2025-04-01 09:29:18 -07:00
Alexandre Belloni
c2004b6efb rtc: mt6397: drop unused defines
RTC_NUM_YEARS has never been used, the other defines are not used since
commit 34bbdc12d0 ("rtc: mt6359: Add RTC hardware range and add support
for start-year")

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250303223637.1135362-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-04-01 12:03:39 +02:00
Josh Poimboeuf
6309a5c43b rcu-tasks: Always inline rcu_irq_work_resched()
Thanks to CONFIG_DEBUG_SECTION_MISMATCH, empty functions can be
generated out of line.  rcu_irq_work_resched() can be called from
noinstr code, so make sure it's always inlined.

Fixes: 564506495c ("rcu/context-tracking: Move deferred nocb resched to context tracking")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/e84f15f013c07e4c410d972e75620c53b62c1b3e.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/d1eca076-fdde-484a-b33e-70e0d167c36d@infradead.org
2025-04-01 09:12:17 +02:00
Josh Poimboeuf
9ac50f7311 context_tracking: Always inline ct_{nmi,irq}_{enter,exit}()
Thanks to CONFIG_DEBUG_SECTION_MISMATCH, empty functions can be
generated out of line.  These can be called from noinstr code, so make
sure they're always inlined.

Fixes the following warnings:

  vmlinux.o: warning: objtool: irqentry_nmi_enter+0xa2: call to ct_nmi_enter() leaves .noinstr.text section
  vmlinux.o: warning: objtool: irqentry_nmi_exit+0x16: call to ct_nmi_exit() leaves .noinstr.text section
  vmlinux.o: warning: objtool: irqentry_exit+0x78: call to ct_irq_exit() leaves .noinstr.text section

Fixes: 6f0e6c1598 ("context_tracking: Take IRQ eqs entrypoints over RCU")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/8509bce3f536bcd4ae7af3a2cf6930d48c5e631a.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/d1eca076-fdde-484a-b33e-70e0d167c36d@infradead.org
2025-04-01 09:12:05 +02:00
Josh Poimboeuf
09f37f2d7b sched/smt: Always inline sched_smt_active()
sched_smt_active() can be called from noinstr code, so it should always
be inlined.  The CONFIG_SCHED_SMT version already has __always_inline.
Do the same for its !CONFIG_SCHED_SMT counterpart.

Fixes the following warning:

  vmlinux.o: error: objtool: intel_idle_ibrs+0x13: call to sched_smt_active() leaves .noinstr.text section

Fixes: 321a874a7e ("sched/smt: Expose sched_smt_present static key")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/1d03907b0a247cf7fb5c1d518de378864f603060.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/r/202503311434.lyw2Tveh-lkp@intel.com/
2025-04-01 09:07:13 +02:00
Linus Torvalds
b6dde1e527 NFSD 6.15 Release Notes
Neil Brown contributed more scalability improvements to NFSD's
 open file cache, and Jeff Layton contributed a menagerie of
 repairs to NFSD's NFSv4 callback / backchannel implementation.
 
 Mike Snitzer contributed a change to NFS re-export support that
 disables support for file locking on a re-exported NFSv4 mount.
 This is because NFSv4 state recovery is currently difficult if
 not impossible for re-exported NFS mounts. The change aims to
 prevent data integrity exposures after the re-export server
 crashes.
 
 Work continues on the evolving NFSD netlink administrative API.
 
 Many thanks to the contributors, reviewers, testers, and bug
 reporters who participated during the v6.15 development cycle.
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Merge tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "Neil Brown contributed more scalability improvements to NFSD's open
  file cache, and Jeff Layton contributed a menagerie of repairs to
  NFSD's NFSv4 callback / backchannel implementation.

  Mike Snitzer contributed a change to NFS re-export support that
  disables support for file locking on a re-exported NFSv4 mount. This
  is because NFSv4 state recovery is currently difficult if not
  impossible for re-exported NFS mounts. The change aims to prevent data
  integrity exposures after the re-export server crashes.

  Work continues on the evolving NFSD netlink administrative API.

  Many thanks to the contributors, reviewers, testers, and bug reporters
  who participated during the v6.15 development cycle"

* tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (45 commits)
  NFSD: Add a Kconfig setting to enable delegated timestamps
  sysctl: Fixes nsm_local_state bounds
  nfsd: use a long for the count in nfsd4_state_shrinker_count()
  nfsd: remove obsolete comment from nfs4_alloc_stid
  nfsd: remove unneeded forward declaration of nfsd4_mark_cb_fault()
  nfsd: reorganize struct nfs4_delegation for better packing
  nfsd: handle errors from rpc_call_async()
  nfsd: move cb_need_restart flag into cb_flags
  nfsd: replace CB_GETATTR_BUSY with NFSD4_CALLBACK_RUNNING
  nfsd: eliminate cl_ra_cblist and NFSD4_CLIENT_CB_RECALL_ANY
  nfsd: prevent callback tasks running concurrently
  nfsd: disallow file locking and delegations for NFSv4 reexport
  nfsd: filecache: drop the list_lru lock during lock gc scans
  nfsd: filecache: don't repeatedly add/remove files on the lru list
  nfsd: filecache: introduce NFSD_FILE_RECENT
  nfsd: filecache: use list_lru_walk_node() in nfsd_file_gc()
  nfsd: filecache: use nfsd_file_dispose_list() in nfsd_file_close_inode_sync()
  NFSD: Re-organize nfsd_file_gc_worker()
  nfsd: filecache: remove race handling.
  fs: nfs: acl: Avoid -Wflex-array-member-not-at-end warning
  ...
2025-03-31 17:28:17 -07:00
Eric Dumazet
f278b6d5bb Revert "tcp: avoid atomic operations on sk->sk_rmem_alloc"
This reverts commit 0de2a5c4b8.

I forgot that a TCP socket could receive messages in its error queue.

sock_queue_err_skb() can be called without socket lock being held,
and changes sk->sk_rmem_alloc.

The fact that skbs in error queue are limited by sk->sk_rcvbuf
means that error messages can be dropped if socket receive
queues are full, which is an orthogonal issue.

In future kernels, we could use a separate sk->sk_error_mem_alloc
counter specifically for the error queue.

Fixes: 0de2a5c4b8 ("tcp: avoid atomic operations on sk->sk_rmem_alloc")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250331075946.31960-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-31 16:53:54 -07:00