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1,412,004 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
66a1025f7f |
soc: sew SoC familes for 6.19
These three new families of SoC are split out into a separate branch
because they touch multiple parts of the source tree and are better
left separate for the initial merge.
- Black Sesame Technologies C1200 is an automotive SoC using
Cortex-A78 CPU cores
- Anlogic dr1v90 (not to be confused with Amlogic) is an FPGA
platform using a single nuclei ux900 RISC-V core
- Tenstorrent Blackhole is a Neural Processing Unit using
custom "Tensix" cores for computation offload managed by
Linux running on SiFive X280 RISC-V cores.
Support for all three is rather rudimentary at the moment and will get
improved as device drivers are merged through other tree.
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Merge tag 'soc-newsoc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull new SoC families update from Arnd Bergmann:
"These three new families of SoC are split out into a separate branch
because they touch multiple parts of the source tree and are better
left separate for the initial merge.
- Black Sesame Technologies C1200 is an automotive SoC using
Cortex-A78 CPU cores
- Anlogic dr1v90 (not to be confused with Amlogic) is an FPGA
platform using a single nuclei ux900 RISC-V core
- Tenstorrent Blackhole is a Neural Processing Unit using custom
"Tensix" cores for computation offload managed by Linux running on
SiFive X280 RISC-V cores.
Support for all three is rather rudimentary at the moment and will get
improved as device drivers are merged through other tree"
* tag 'soc-newsoc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
MAINTAINERS: add Black Sesame Technologies (BST) ARM SoC support
arm64: defconfig: enable BST platform support
arm64: dts: bst: add support for Black Sesame Technologies C1200 CDCU1.0 board
arm64: Kconfig: add ARCH_BST for Black Sesame Technologies SoCs
dt-bindings: arm: add Black Sesame Technologies (bst) SoC
dt-bindings: vendor-prefixes: Add Black Sesame Technologies Co., Ltd.
MAINTAINERS: Setup support for Anlogic tree
riscv: defconfig: Enable Anlogic SoC
riscv: dts: anlogic: Add Milianke MLKPAI FS01 board
riscv: dts: Add initial Anlogic DR1V90 SoC device tree
riscv: Add Anlogic SoC famly Kconfig support
dt-bindings: serial: snps-dw-apb-uart: Add Anlogic DR1V90 uart
dt-bindings: timer: Add Anlogic DR1V90 ACLINT MTIMER
dt-bindings: riscv: Add Anlogic DR1V90
dt-bindings: riscv: Add Nuclei UX900 compatibles
dt-bindings: vendor-prefixes: Add Anlogic, Milianke and Nuclei
riscv: defconfig: Enable Tenstorrent SoCs
riscv: Kconfig.socs: Add ARCH_TENSTORRENT for Tenstorrent SoCs
riscv: dts: Add Tenstorrent Blackhole SoC PCIe cards
dt-bindings: interrupt-controller: Add Tenstorrent Blackhole compatible
...
|
||
|
Linus Torvalds
|
0cac5ce06e |
soc: devicetree updates for 6.19
Three new SoCs got added in existing arm64 chip families:
- Renesas R-Car X5H (R8A78000) is a new generation of automotive SoCs,
based on 16 Cortex-A720 (Armv9.2) cores, which makes the the currently
highest-perforance embedded SoC.
- TI AM62L is a new variant of the AM62 family of industrial SoCs, this
one comes without a GPU.
- Qualcomm MSM8937 (Snapdragon 430) is an older mobile phone chip based
on Cortex-A53, and closely related to MSM8917 (Snapdragn 425), which we
already support.
In addition, there are a good number of newly supported machines
across SoC families:
- Two Aspeed AST2600 (Cortex-A7) based BMC setups for large servers
- Mobile Phones and tables based on Mediatek MT6582, Nvidia Tegra124,
Qualcomm MSM8937 and Qualcomm MSM8939,
- Two Laptops based on Qualcomm SoCs: one using the older sdm850, the
other using x1p42100.
- One Router based on Rockchips RK3568
- 24 variants of the Enclustra Mercury system-on-module, all based on
32-bit Intel/Altera SocFPGA chips, plus two boards using 64-bit
SocFPGA Agilex chips..
- 30 industrial/embedded boards and single-board computers, using
various chips from NXP, Rockchips, Mediatek, TI, Amlogic, Qualcomm,
Spacemit, and Starfive.
In total there are 783 commits here, the majority of these improving
hardware support and cleaning up devicetree files across the tree, with
the majority of the changes going into the Qualcomm, NXP, Renesas and
Rockchips platforms.
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Merge tag 'soc-dt-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC devicetree updates from Arnd Bergmann:
"Three new SoCs got added in existing arm64 chip families:
- Renesas R-Car X5H (R8A78000) is a new generation of automotive
SoCs, based on 16 Cortex-A720 (Armv9.2) cores, which makes the the
currently highest-perforance embedded SoC.
- TI AM62L is a new variant of the AM62 family of industrial SoCs,
this one comes without a GPU.
- Qualcomm MSM8937 (Snapdragon 430) is an older mobile phone chip
based on Cortex-A53, and closely related to MSM8917 (Snapdragn
425), which we already support.
In addition, there are a good number of newly supported machines
across SoC families:
- Two Aspeed AST2600 (Cortex-A7) based BMC setups for large servers
- Mobile Phones and tables based on Mediatek MT6582, Nvidia Tegra124,
Qualcomm MSM8937 and Qualcomm MSM8939,
- Two Laptops based on Qualcomm SoCs: one using the older sdm850, the
other using x1p42100.
- One Router based on Rockchips RK3568
- 24 variants of the Enclustra Mercury system-on-module, all based on
32-bit Intel/Altera SocFPGA chips, plus two boards using 64-bit
SocFPGA Agilex chips..
- 30 industrial/embedded boards and single-board computers, using
various chips from NXP, Rockchips, Mediatek, TI, Amlogic, Qualcomm,
Spacemit, and Starfive.
In total there are 783 commits here, the majority of these improving
hardware support and cleaning up devicetree files across the tree,
with the majority of the changes going into the Qualcomm, NXP, Renesas
and Rockchips platforms"
* tag 'soc-dt-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (782 commits)
arm64: dts: mediatek: mt8195: Fix address range for JPEG decoder core 1
ARM: dts: samsung: exynos4412-midas: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-trats: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-i9100: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: universal_c210: turn off SDIO WLAN chip during system suspend
arm64: dts: amlogic: meson-g12b: Fix L2 cache reference for S922X CPUs
arm64: dts: Add gpio_intc node for Amlogic S7D SoCs
arm64: dts: Add gpio_intc node for Amlogic S7 SoCs
arm64: dts: Add gpio_intc node for Amlogic S6 SoCs
arm64: dts: amlogic: s7d: add ao secure node
arm64: dts: amlogic: s7: add ao secure node
arm64: dts: amlogic: s6: add ao secure node
arm64: dts: amlogic: Fix the register name of the 'DBI' region
dts: arm64: amlogic: add a5 pinctrl node
arm64: dts: amlogic: s7d: add power domain controller node
arm64: dts: amlogic: s7: add power domain controller node
arm64: dts: amlogic: s6: add power domain controller node
dts: arm64: amlogic: Add ISP related nodes for C3
arm64: dts: meson: add initial device-tree for Tanix TX9 Pro
dt-bindings: arm: amlogic: add support for Tanix TX9 Pro
...
|
||
|
Linus Torvalds
|
09cab48db9 |
soc: arm code changes for 6.19
These are very minimal changes for 32-bit Arm platform code, enabling SMP bringup for one more SoC variant (mt6582) among spelling changes and a build warning fix. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmky7CAACgkQmmx57+YA GNmvOw//djF61SwbdYIocFKa0hJjSM7EwRTOJeB5vejiwfu74isemMIfNrAgbfIC pZhjl65uyQNUymnrN0yzp64mipDaCG6UklcRfu0SzSHxTHgkRrDUtKxeauza0pyv YrGQhn/G0GVUNVnQIXJwZQYJDwtNQMuRhGn9/hJdBQ8JlvQStDgh6LCGChbJpmjh L2qj7fXTxAPwIdWQYkuxH4WQFiaVEjdG06rTviBHTwm1GxV6cu6aAg+5G/+gxd+h ZXoswd6zURNGfP1+YFfF+o9DlZ+Z4Kyvhg421Wizc11HMQ9HXHzhrjgZCEgjO0kL VfnInimkoUZOOabNM1c57A4clSdVKdmjfAq1JJkHv7w5GOY2zwkULwrRJ+ybKoIl QUpWs7dbU2WqLRa69whrHTXdluCGd/lFLQDemHFt84FZfX+D6kKgbXrjIxGjrCRs v1EOV92G7o+VJZpa+A9vfEseXD2MisWFfkdozXcs+jl54hDJkH5X9kxlWP/qAwI3 ljxomd1v2MzzbZFGl2rJQx78HbsoSZrpi4KiacdRJ3MXeoNi2xpQeoxlu6R8jnKW oB0sF5+2eY0O3++lN/E2PpJHB8LNSWmErP9P9zeKp8KkLPhnpEb5l6Fs8k60fzQP Adz+NJpxPs9Hu2SPCsRxrX9RrzZeXKefC3Gs4lkkFCSNfhxXtCo= =Ygkj -----END PGP SIGNATURE----- Merge tag 'soc-arm-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull SoC ARM code updates from Arnd Bergmann: "These are very minimal changes for 32-bit Arm platform code, enabling SMP bringup for one more SoC variant (mt6582) among spelling changes and a build warning fix" * tag 'soc-arm-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: omap1: avoid symbol clashes in fiq handler ARM: gemini: fix typos in comments ARM: versatile: Fix typo in versatile.c ARM: OMAP2+: Fix falg->flag typo in omap_smc2() ARM: mediatek: add MT6582 smp bring up code ARM: mediatek: add board_dt_compat entry for the MT6582 SoC |
||
|
Linus Torvalds
|
b4c6c76e40 |
soc: defconfig for 6.19
As usual, a number of newly added drivers get enabled in the arm64 defconfig, in addition to minor housekeeping work on defconfig files for arm32, arm64 and riscv. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmky6vwACgkQmmx57+YA GNnrFhAAsGvSKp1stEe9sDOQ176xATkXElmjVxdPQe1TskRWMU/H9tRa+qirc1bG Uz/YTonppz8EQ+3pUqAi40R0+FKde+i+Ox1hVOl08VnoFObCKBBWqEGJvDbXWy4e uxEF/S4X/+e1zfSkTqUj4LXjSzR3Fl5ESkp2xX9xes0YAGxAzVWVHJ7TDaXDY3KS iVtKx9/NKM9v9irEjl2AjkVXKCdOTldEJej8si6AdBx6FZpZLT2kDBQZCjOEspTA J6laAwlkLwxhSoy/MAE2RYdwfDTKJDPytxC0eOpQi6VGPAAiKw8457eACkkg5vN9 B8DulWbo3qUUEYqeI2hbkLzH7z1kiH/ZD+RZugIdoM0Qf96odmzI7t8LmjZCBqt6 4IFeWOM/UcymVk5V3JQRu8XiXKZHrHGvqpUoUdyd+0AmrJ9JzKDfRt8q9wkrUKBu Fm6TDhVbco0VJFk5sdz9bP2feRnWrpTLm50CjQ8VkcDfJVXtRZdw87HOFEJ6p8R8 iUiMPhI7vaMGMlggcY3yaTV3QRSEPUWykhayfwhMXQM1BPq7d9EfNH8y9QSVhP9e UeAKL8Xnis9nMDosmnGhb0ubsZk32Y1SM1TFzX5if+LFKba4lbu7LMy+URSYXXuJ +UzTSpzhK2KT1JWAkdIMZlBbhlPcJw1mSzNE1wflfa08o+suRas= =q9n2 -----END PGP SIGNATURE----- Merge tag 'soc-defconfig-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull SoC defconfig updates from Arnd Bergmann: "As usual, a number of newly added drivers get enabled in the arm64 defconfig, in addition to minor housekeeping work on defconfig files for arm32, arm64 and riscv" * tag 'soc-defconfig-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits) arm64: defconfig: enable Exynos ACPM clocks arm64: defconfig: Remove the redundant SCHED_MC/SCHED_SMT ARM: multi_v7_defconfig: Enable TI PRU Ethernet driver arm64: defconfig: enable i.MX AIPSTZ driver ARM: mxs_defconfig: enable sound drivers for imx28-amarula-rmm arm64: defconfig: Enable i.MX95 drivers for pinctrl, Ethernet and PCIe arm64: defconfig: enable rockchip camera interface ARM: tegra: Enable EXT4 for Tegra arm64: defconfig: Enable NVIDIA VRS PSEQ RTC arm64: defconfig: Enable SX150x GPIO expander driver riscv: defconfig: enable SPI_FSL_QUADSPI as a module ARM: at91: at91_dt_defconfig: set MMC_SPI to module arm64: defconfig: Build NSS clock controller driver for IPQ5424 arm64: defconfig: Enable SCSI UFS Crypto and Block Inline encryption drivers arm64: defconfig: Add M31 eUSB2 PHY config arm64: defconfig: Enable configs for Fairphone 3, 4, 5 smartphones arm64: defconfig: Enable two Novatek display panels for MTP8750 and Tianma arm64: defconfig: Enable RZ/T2H / RZ/N2H ADC driver ARM: shmobile: defconfig: Refresh for v6.18-rc1 arm64: defconfig: Enable DW HDMI QP CEC support ... |
||
|
Linus Torvalds
|
51d90a15fe |
ARM:
- Support for userspace handling of synchronous external aborts (SEAs),
allowing the VMM to potentially handle the abort in a non-fatal
manner.
- Large rework of the VGIC's list register handling with the goal of
supporting more active/pending IRQs than available list registers in
hardware. In addition, the VGIC now supports EOImode==1 style
deactivations for IRQs which may occur on a separate vCPU than the
one that acked the IRQ.
- Support for FEAT_XNX (user / privileged execute permissions) and
FEAT_HAF (hardware update to the Access Flag) in the software page
table walkers and shadow MMU.
- Allow page table destruction to reschedule, fixing long need_resched
latencies observed when destroying a large VM.
- Minor fixes to KVM and selftests
Loongarch:
- Get VM PMU capability from HW GCFG register.
- Add AVEC basic support.
- Use 64-bit register definition for EIOINTC.
- Add KVM timer test cases for tools/selftests.
RISC/V:
- SBI message passing (MPXY) support for KVM guest
- Give a new, more specific error subcode for the case when in-kernel
AIA virtualization fails to allocate IMSIC VS-file
- Support KVM_DIRTY_LOG_INITIALLY_SET, enabling dirty log gradually
in small chunks
- Fix guest page fault within HLV* instructions
- Flush VS-stage TLB after VCPU migration for Andes cores
s390:
- Always allocate ESCA (Extended System Control Area), instead of
starting with the basic SCA and converting to ESCA with the
addition of the 65th vCPU. The price is increased number of
exits (and worse performance) on z10 and earlier processor;
ESCA was introduced by z114/z196 in 2010.
- VIRT_XFER_TO_GUEST_WORK support
- Operation exception forwarding support
- Cleanups
x86:
- Skip the costly "zap all SPTEs" on an MMIO generation wrap if MMIO SPTE
caching is disabled, as there can't be any relevant SPTEs to zap.
- Relocate a misplaced export.
- Fix an async #PF bug where KVM would clear the completion queue when the
guest transitioned in and out of paging mode, e.g. when handling an SMI and
then returning to paged mode via RSM.
- Leave KVM's user-return notifier registered even when disabling
virtualization, as long as kvm.ko is loaded. On reboot/shutdown, keeping
the notifier registered is ok; the kernel does not use the MSRs and the
callback will run cleanly and restore host MSRs if the CPU manages to
return to userspace before the system goes down.
- Use the checked version of {get,put}_user().
- Fix a long-lurking bug where KVM's lack of catch-up logic for periodic APIC
timers can result in a hard lockup in the host.
- Revert the periodic kvmclock sync logic now that KVM doesn't use a
clocksource that's subject to NTP corrections.
- Clean up KVM's handling of MMIO Stale Data and L1TF, and bury the latter
behind CONFIG_CPU_MITIGATIONS.
- Context switch XCR0, XSS, and PKRU outside of the entry/exit fast path;
the only reason they were handled in the fast path was to paper of a bug
in the core #MC code, and that has long since been fixed.
- Add emulator support for AVX MOV instructions, to play nice with emulated
devices whose guest drivers like to access PCI BARs with large multi-byte
instructions.
x86 (AMD):
- Fix a few missing "VMCB dirty" bugs.
- Fix the worst of KVM's lack of EFER.LMSLE emulation.
- Add AVIC support for addressing 4k vCPUs in x2AVIC mode.
- Fix incorrect handling of selective CR0 writes when checking intercepts
during emulation of L2 instructions.
- Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32] on
VMRUN and #VMEXIT.
- Fix a bug where KVM corrupt the guest code stream when re-injecting a soft
interrupt if the guest patched the underlying code after the VM-Exit, e.g.
when Linux patches code with a temporary INT3.
- Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits to
userspace, and extend KVM "support" to all policy bits that don't require
any actual support from KVM.
x86 (Intel):
- Use the root role from kvm_mmu_page to construct EPTPs instead of the
current vCPU state, partly as worthwhile cleanup, but mostly to pave the
way for tracking per-root TLB flushes, and elide EPT flushes on pCPU
migration if the root is clean from a previous flush.
- Add a few missing nested consistency checks.
- Rip out support for doing "early" consistency checks via hardware as the
functionality hasn't been used in years and is no longer useful in general;
replace it with an off-by-default module param to WARN if hardware fails
a check that KVM does not perform.
- Fix a currently-benign bug where KVM would drop the guest's SPEC_CTRL[63:32]
on VM-Enter.
- Misc cleanups.
- Overhaul the TDX code to address systemic races where KVM (acting on behalf
of userspace) could inadvertantly trigger lock contention in the TDX-Module;
KVM was either working around these in weird, ugly ways, or was simply
oblivious to them (though even Yan's devilish selftests could only break
individual VMs, not the host kernel)
- Fix a bug where KVM could corrupt a vCPU's cpu_list when freeing a TDX vCPU,
if creating said vCPU failed partway through.
- Fix a few sparse warnings (bad annotation, 0 != NULL).
- Use struct_size() to simplify copying TDX capabilities to userspace.
- Fix a bug where TDX would effectively corrupt user-return MSR values if the
TDX Module rejects VP.ENTER and thus doesn't clobber host MSRs as expected.
Selftests:
- Fix a math goof in mmu_stress_test when running on a single-CPU system/VM.
- Forcefully override ARCH from x86_64 to x86 to play nice with specifying
ARCH=x86_64 on the command line.
- Extend a bunch of nested VMX to validate nested SVM as well.
- Add support for LA57 in the core VM_MODE_xxx macro, and add a test to
verify KVM can save/restore nested VMX state when L1 is using 5-level
paging, but L2 is not.
- Clean up the guest paging code in anticipation of sharing the core logic for
nested EPT and nested NPT.
guest_memfd:
- Add NUMA mempolicy support for guest_memfd, and clean up a variety of
rough edges in guest_memfd along the way.
- Define a CLASS to automatically handle get+put when grabbing a guest_memfd
from a memslot to make it harder to leak references.
- Enhance KVM selftests to make it easer to develop and debug selftests like
those added for guest_memfd NUMA support, e.g. where test and/or KVM bugs
often result in hard-to-debug SIGBUS errors.
- Misc cleanups.
Generic:
- Use the recently-added WQ_PERCPU when creating the per-CPU workqueue for
irqfd cleanup.
- Fix a goof in the dirty ring documentation.
- Fix choice of target for directed yield across different calls to
kvm_vcpu_on_spin(); the function was always starting from the first
vCPU instead of continuing the round-robin search.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"ARM:
- Support for userspace handling of synchronous external aborts
(SEAs), allowing the VMM to potentially handle the abort in a
non-fatal manner
- Large rework of the VGIC's list register handling with the goal of
supporting more active/pending IRQs than available list registers
in hardware. In addition, the VGIC now supports EOImode==1 style
deactivations for IRQs which may occur on a separate vCPU than the
one that acked the IRQ
- Support for FEAT_XNX (user / privileged execute permissions) and
FEAT_HAF (hardware update to the Access Flag) in the software page
table walkers and shadow MMU
- Allow page table destruction to reschedule, fixing long
need_resched latencies observed when destroying a large VM
- Minor fixes to KVM and selftests
Loongarch:
- Get VM PMU capability from HW GCFG register
- Add AVEC basic support
- Use 64-bit register definition for EIOINTC
- Add KVM timer test cases for tools/selftests
RISC/V:
- SBI message passing (MPXY) support for KVM guest
- Give a new, more specific error subcode for the case when in-kernel
AIA virtualization fails to allocate IMSIC VS-file
- Support KVM_DIRTY_LOG_INITIALLY_SET, enabling dirty log gradually
in small chunks
- Fix guest page fault within HLV* instructions
- Flush VS-stage TLB after VCPU migration for Andes cores
s390:
- Always allocate ESCA (Extended System Control Area), instead of
starting with the basic SCA and converting to ESCA with the
addition of the 65th vCPU. The price is increased number of exits
(and worse performance) on z10 and earlier processor; ESCA was
introduced by z114/z196 in 2010
- VIRT_XFER_TO_GUEST_WORK support
- Operation exception forwarding support
- Cleanups
x86:
- Skip the costly "zap all SPTEs" on an MMIO generation wrap if MMIO
SPTE caching is disabled, as there can't be any relevant SPTEs to
zap
- Relocate a misplaced export
- Fix an async #PF bug where KVM would clear the completion queue
when the guest transitioned in and out of paging mode, e.g. when
handling an SMI and then returning to paged mode via RSM
- Leave KVM's user-return notifier registered even when disabling
virtualization, as long as kvm.ko is loaded. On reboot/shutdown,
keeping the notifier registered is ok; the kernel does not use the
MSRs and the callback will run cleanly and restore host MSRs if the
CPU manages to return to userspace before the system goes down
- Use the checked version of {get,put}_user()
- Fix a long-lurking bug where KVM's lack of catch-up logic for
periodic APIC timers can result in a hard lockup in the host
- Revert the periodic kvmclock sync logic now that KVM doesn't use a
clocksource that's subject to NTP corrections
- Clean up KVM's handling of MMIO Stale Data and L1TF, and bury the
latter behind CONFIG_CPU_MITIGATIONS
- Context switch XCR0, XSS, and PKRU outside of the entry/exit fast
path; the only reason they were handled in the fast path was to
paper of a bug in the core #MC code, and that has long since been
fixed
- Add emulator support for AVX MOV instructions, to play nice with
emulated devices whose guest drivers like to access PCI BARs with
large multi-byte instructions
x86 (AMD):
- Fix a few missing "VMCB dirty" bugs
- Fix the worst of KVM's lack of EFER.LMSLE emulation
- Add AVIC support for addressing 4k vCPUs in x2AVIC mode
- Fix incorrect handling of selective CR0 writes when checking
intercepts during emulation of L2 instructions
- Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32]
on VMRUN and #VMEXIT
- Fix a bug where KVM corrupt the guest code stream when re-injecting
a soft interrupt if the guest patched the underlying code after the
VM-Exit, e.g. when Linux patches code with a temporary INT3
- Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits
to userspace, and extend KVM "support" to all policy bits that
don't require any actual support from KVM
x86 (Intel):
- Use the root role from kvm_mmu_page to construct EPTPs instead of
the current vCPU state, partly as worthwhile cleanup, but mostly to
pave the way for tracking per-root TLB flushes, and elide EPT
flushes on pCPU migration if the root is clean from a previous
flush
- Add a few missing nested consistency checks
- Rip out support for doing "early" consistency checks via hardware
as the functionality hasn't been used in years and is no longer
useful in general; replace it with an off-by-default module param
to WARN if hardware fails a check that KVM does not perform
- Fix a currently-benign bug where KVM would drop the guest's
SPEC_CTRL[63:32] on VM-Enter
- Misc cleanups
- Overhaul the TDX code to address systemic races where KVM (acting
on behalf of userspace) could inadvertantly trigger lock contention
in the TDX-Module; KVM was either working around these in weird,
ugly ways, or was simply oblivious to them (though even Yan's
devilish selftests could only break individual VMs, not the host
kernel)
- Fix a bug where KVM could corrupt a vCPU's cpu_list when freeing a
TDX vCPU, if creating said vCPU failed partway through
- Fix a few sparse warnings (bad annotation, 0 != NULL)
- Use struct_size() to simplify copying TDX capabilities to userspace
- Fix a bug where TDX would effectively corrupt user-return MSR
values if the TDX Module rejects VP.ENTER and thus doesn't clobber
host MSRs as expected
Selftests:
- Fix a math goof in mmu_stress_test when running on a single-CPU
system/VM
- Forcefully override ARCH from x86_64 to x86 to play nice with
specifying ARCH=x86_64 on the command line
- Extend a bunch of nested VMX to validate nested SVM as well
- Add support for LA57 in the core VM_MODE_xxx macro, and add a test
to verify KVM can save/restore nested VMX state when L1 is using
5-level paging, but L2 is not
- Clean up the guest paging code in anticipation of sharing the core
logic for nested EPT and nested NPT
guest_memfd:
- Add NUMA mempolicy support for guest_memfd, and clean up a variety
of rough edges in guest_memfd along the way
- Define a CLASS to automatically handle get+put when grabbing a
guest_memfd from a memslot to make it harder to leak references
- Enhance KVM selftests to make it easer to develop and debug
selftests like those added for guest_memfd NUMA support, e.g. where
test and/or KVM bugs often result in hard-to-debug SIGBUS errors
- Misc cleanups
Generic:
- Use the recently-added WQ_PERCPU when creating the per-CPU
workqueue for irqfd cleanup
- Fix a goof in the dirty ring documentation
- Fix choice of target for directed yield across different calls to
kvm_vcpu_on_spin(); the function was always starting from the first
vCPU instead of continuing the round-robin search"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (260 commits)
KVM: arm64: at: Update AF on software walk only if VM has FEAT_HAFDBS
KVM: arm64: at: Use correct HA bit in TCR_EL2 when regime is EL2
KVM: arm64: Document KVM_PGTABLE_PROT_{UX,PX}
KVM: arm64: Fix spelling mistake "Unexpeced" -> "Unexpected"
KVM: arm64: Add break to default case in kvm_pgtable_stage2_pte_prot()
KVM: arm64: Add endian casting to kvm_swap_s[12]_desc()
KVM: arm64: Fix compilation when CONFIG_ARM64_USE_LSE_ATOMICS=n
KVM: arm64: selftests: Add test for AT emulation
KVM: arm64: nv: Expose hardware access flag management to NV guests
KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW
KVM: arm64: Implement HW access flag management in stage-1 SW PTW
KVM: arm64: Propagate PTW errors up to AT emulation
KVM: arm64: Add helper for swapping guest descriptor
KVM: arm64: nv: Use pgtable definitions in stage-2 walk
KVM: arm64: Handle endianness in read helper for emulated PTW
KVM: arm64: nv: Stop passing vCPU through void ptr in S2 PTW
KVM: arm64: Call helper for reading descriptors directly
KVM: arm64: nv: Advertise support for FEAT_XNX
KVM: arm64: Teach ptdump about FEAT_XNX permissions
KVM: s390: Use generic VIRT_XFER_TO_GUEST_WORK functions
...
|
||
Trond Myklebust
|
bd3b04b46c |
NFSv4: Handle NFS4ERR_NOTSUPP errors for directory delegations
The error NFS4ERR_NOTSUPP will be returned for operations that are
legal, but not supported by the server.
Fixes:
|
||
Mike Snitzer
|
0b873de2c0 |
nfs/localio: remove 61 byte hole from needless ____cacheline_aligned
struct nfs_local_kiocb used ____cacheline_aligned on its iters[] array
and as the structure evolved it caused a 61 byte hole to form. Fix
this by removing ____cacheline_aligned and reordering iters[] before
iter_is_dio_aligned[].
Fixes:
|
||
Mike Snitzer
|
f50d0328d0 |
nfs/localio: remove alignment size checking in nfs_is_local_dio_possible
This check to ensure dio_offset_align isn't larger than PAGE_SIZE is
no longer relevant (older iterations of NFS Direct was allocating
misaligned head and tail pages but no longer does, so this check isn't
needed).
Fixes:
|
||
|
Linus Torvalds
|
399ead3a6d |
Apart from the usual small churn, we have
- initial SMP support (only kernel) - major vDSO cleanups (and fixes for 32-bit) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpeA8sTs3M8SN2hR410qiO8sPaAAFAmkyoG8ACgkQ10qiO8sP aAAmVxAAgxi7ZWBgmQS5+CAtlehy81Nen09rcPcwMEDwWoNA6/ePsroqPijpgBGx Ayc0IAbGHs/LN1UZu1HevTkD5ydg6nw3aQzv51Yu+A27MLGUnwPHyYc/rggWr9Zc SlqF5iRp4Wp52M7HqAHv1UzoQdDYtVgKbpSaAV07KwJNTSIWAIhn464MfIUfSh92 AsX6+o8jhns7L7Bx99Tfb9MiPDFQzXRmkLmE56SCpgYC1cXNFRgVKCaNz9w27OH7 hYlFJ1QLg0wmli0K0yZVG+Vh5mtgnulw5oM4ZZKwtnmjIgtBvT59jAXi7dWiJ581 Yt7KqlJE0Fp9XwIgAMVlwZsa3PUJ5A4QGtM9lxcgQf/DNpiiO5CEiiHqYhRS0nDM GAF9lpMjArJt5lTp6jO6gqe8ykoCl2cYbP+Pyad4D2SgIZZtajmgOzugXBNEB/xj LM4a8s8a89lRbTsOKylrRlMz5AIbjcwgKaXSvIauNc5b40kdrOS2fY+Z9IfebQL7 0/WywZO6VHibdY7iJTmTvktQ9LClpM93GqCcNi7W/8zn1awdPhDS+8SxJXUZcH1y eUELEl8mfc60/dszFuKwdI+BGJUDURBUlW4SwLcr/PDp/6FcqRCnIdsYtkuKHhbG driH3E4JuMM6HAjJVz7JxqSXXaIVvj2wZbRjF4Xqg4I9lmN7cbY= =CNVA -----END PGP SIGNATURE----- Merge tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux Pull UML updates from Johannes Berg: "Apart from the usual small churn, we have - initial SMP support (only kernel) - major vDSO cleanups (and fixes for 32-bit)" * tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (33 commits) um: Disable KASAN_INLINE when STATIC_LINK is selected um: Don't rename vmap to kernel_vmap um: drivers: virtio: use string choices helper um: Always set up AT_HWCAP and AT_PLATFORM x86/um: Remove FIXADDR_USER_START and FIXADDR_USE_END um: Remove __access_ok_vsyscall() um: Remove redundant range check from __access_ok_vsyscall() um: Remove fixaddr_user_init() x86/um: Drop gate area handling x86/um: Do not inherit vDSO from host um: Split out default elf_aux_hwcap x86/um: Move ELF_PLATFORM fallback to x86-specific code um: Split out default elf_aux_platform um: Avoid circular dependency on asm-offsets in pgtable.h um: Enable SMP support on x86 asm-generic: percpu: Add assembly guard um: vdso: Remove getcpu support on x86 um: Add initial SMP support um: Define timers on a per-CPU basis um: Determine sleep based on need_resched() ... |
||
|
Linus Torvalds
|
07025b51c1 |
First set of RISC-V updates for v6.19-rc1
- Enable parallel hotplug for RISC-V
- Optimize vector regset allocation for ptrace()
- Add a kernel selftest for the vector ptrace interface
- Enable the userspace RAID6 test to build and run using RISC-V
vectors
- Add initial support for the Zalasr RISC-V ratified ISA extension
- For the Zicbop RISC-V ratified ISA extension to userspace, expose
hardware and kernel support to userspace and add a kselftest for
Zicbop
- Convert open-coded instances of 'asm goto's that are controlled by
runtime ALTERNATIVEs to use riscv_has_extension_{un,}likely(),
following arm64's alternative_has_cap_{un,}likely()
- Remove an unnecessary mask in the GFP flags used in some calls to
pagetable_alloc()
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Merge tag 'riscv-for-linus-6.19-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Enable parallel hotplug for RISC-V
- Optimize vector regset allocation for ptrace()
- Add a kernel selftest for the vector ptrace interface
- Enable the userspace RAID6 test to build and run using RISC-V vectors
- Add initial support for the Zalasr RISC-V ratified ISA extension
- For the Zicbop RISC-V ratified ISA extension to userspace, expose
hardware and kernel support to userspace and add a kselftest for
Zicbop
- Convert open-coded instances of 'asm goto's that are controlled by
runtime ALTERNATIVEs to use riscv_has_extension_{un,}likely(),
following arm64's alternative_has_cap_{un,}likely()
- Remove an unnecessary mask in the GFP flags used in some calls to
pagetable_alloc()
* tag 'riscv-for-linus-6.19-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
selftests/riscv: Add Zicbop prefetch test
riscv: hwprobe: Expose Zicbop extension and its block size
riscv: Introduce Zalasr instructions
riscv: hwprobe: Export Zalasr extension
dt-bindings: riscv: Add Zalasr ISA extension description
riscv: Add ISA extension parsing for Zalasr
selftests: riscv: Add test for the Vector ptrace interface
riscv: ptrace: Optimize the allocation of vector regset
raid6: test: Add support for RISC-V
raid6: riscv: Allow code to be compiled in userspace
raid6: riscv: Prevent compiler from breaking inline vector assembly code
riscv: cmpxchg: Use riscv_has_extension_likely
riscv: bitops: Use riscv_has_extension_likely
riscv: hweight: Use riscv_has_extension_likely
riscv: checksum: Use riscv_has_extension_likely
riscv: pgtable: Use riscv_has_extension_unlikely
riscv: Remove __GFP_HIGHMEM masking
RISC-V: Enable HOTPLUG_PARALLEL for secondary CPUs
|
||
|
Linus Torvalds
|
ad952db4a8 |
powerpc updates for 6.19
- Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit. - Fix unpaired stwcx on interrupt exit on 32-bit. - Fix race condition leading to double list-add in mac_hid_toggle_emumouse(). - Fix mprotect on book3s 32-bit. - Fix SLB multihit issue during SLB preload with 64-bit hash MMU. - Add support for crashkernel CMA reservation. - Add die_id and die_cpumask for Power10 & later to expose chip hemispheres. - A series of minor fixes and improvements to the hash SLB code. Thanks to: Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury, Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom, J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor, Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote, Vishal Chourasia. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRjvi15rv0TSTaE+SIF0oADX8seIQUCaTFrpQAKCRAF0oADX8se IaVSAPwJazU+gxYwIe9mB7Mt9w1N04voW7LmX4tcj83i/Xd5QgEAsXfdpYeo3Tvb VPIOXVGVxOxAccyQ7Yw5QF4BPv+8FAc= =h6Ed -----END PGP SIGNATURE----- Merge tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit - Fix unpaired stwcx on interrupt exit on 32-bit - Fix race condition leading to double list-add in mac_hid_toggle_emumouse() - Fix mprotect on book3s 32-bit - Fix SLB multihit issue during SLB preload with 64-bit hash MMU - Add support for crashkernel CMA reservation - Add die_id and die_cpumask for Power10 & later to expose chip hemispheres - A series of minor fixes and improvements to the hash SLB code Thanks to Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury, Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom, J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor, Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote, and Vishal Chourasia. * tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (32 commits) macintosh/via-pmu-backlight: Include <linux/fb.h> and <linux/of.h> powerpc/powermac: backlight: Include <linux/of.h> powerpc/64s/slb: Add no_slb_preload early cmdline param powerpc/64s/slb: Make preload_add return type as void powerpc/ptdump: Dump PXX level info for kernel_page_tables powerpc/64s/pgtable: Enable directMap counters in meminfo for Hash powerpc/64s/hash: Update directMap page counters for Hash powerpc/64s/hash: Hash hpt_order should be only available with Hash MMU powerpc/64s/hash: Improve hash mmu printk messages powerpc/64s/hash: Fix phys_addr_t printf format in htab_initialize() powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format powerpc/64s/hash: Restrict stress_hpt_struct memblock region to within RMA limit powerpc/64s/slb: Fix SLB multihit issue during SLB preload powerpc, mm: Fix mprotect on book3s 32-bit powerpc/smp: Expose die_id and die_cpumask powerpc/83xx: Add a null pointer check to mcu_gpiochip_add arch:powerpc:tools This file was missing shebang line, so added it kexec: Include kernel-end even without crashkernel powerpc: p2020: Rename wdt@ nodes to watchdog@ powerpc: 86xx: Rename wdt@ nodes to watchdog@ ... |
||
Christian Brauner
|
87c9e88ac4 |
ovl: pass original credentials, not mounter credentials during create
When creating new files the security layer expects the original
credentials to be passed. When cleaning up the code this was accidently
changed to pass the mounter's credentials by relying on current->cred
which is already overriden at this point. Pass the original credentials
directly.
Reported-by: Ondrej Mosnacek <omosnace@redhat.com>
Reported-by: Paul Moore <paul@paul-moore.com>
Fixes:
|
||
David Howells
|
9146c7e53f |
cifs: Remove dead function prototypes
Remove a bunch of dead function prototypes. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-cifs@vger.kernel.org cc: linux-fsdevel@vger.kernel.org Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Signed-off-by: Steve French <stfrench@microsoft.com> |
||
|
Linus Torvalds
|
4b9d25b4d3 |
vfs-6.19-rc1.fixes
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaTLXbgAKCRCRxhvAZXjc og6oAP9QnawWV/g0vFt8O+jODb/JE54A6Vdb3Ai5Pt+yEB6iVgD/Reu8OhB694tO 6j8j+lfPV35Z432VirfeKU7Vd4GUSwg= =HMln -----END PGP SIGNATURE----- Merge tag 'vfs-6.19-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs fixes from Christian Brauner: - Fix a type conversion bug in the ipc subsystem - Fix per-dentry timeout warning in autofs - Drop the fd conversion from sockets - Move assert from iput_not_last() to iput() - Fix reversed check in filesystems_freeze_callback() - Use proper uapi types for new struct delegation definitions * tag 'vfs-6.19-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: vfs: use UAPI types for new struct delegation definition mqueue: correct the type of ro to int Revert "net/socket: convert sock_map_fd() to FD_ADD()" autofs: fix per-dentry timeout warning fs: assert on I_FREEING not being set in iput() and iput_not_last() fs: PM: Fix reverse check in filesystems_freeze_callback() |
||
|
Linus Torvalds
|
e40e023591 |
Description for this pull request:
- Fix a remount failure caused by differing process masks by inheriting
the original mount options during the remount process.
- Fix a potential divide-by-zero error and system crash in
exfat_allocate_bitmap that occurred when the readahead count was zero.
- Add validation for directory cluster bitmap bits to prevent directory
and root cluster from being incorrectly zeroed out on corrupted images.
- Clear the post-EOF page cache when extending a file to prevent stale
mmap data from becoming visible, addressing an generic/363 failure.
- Fix a reference count leak in exfat_find by properly releasing
the dentry set in specific error paths.
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Merge tag 'exfat-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat updates from Namjae Jeon:
- Fix a remount failure caused by differing process masks by inheriting
the original mount options during the remount process
- Fix a potential divide-by-zero error and system crash in
exfat_allocate_bitmap that occurred when the readahead count was zero
- Add validation for directory cluster bitmap bits to prevent directory
and root cluster from being incorrectly zeroed out on corrupted
images
- Clear the post-EOF page cache when extending a file to prevent stale
mmap data from becoming visible, addressing an generic/363 failure
- Fix a reference count leak in exfat_find by properly releasing the
dentry set in specific error paths
* tag 'exfat-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: fix remount failure in different process environments
exfat: fix divide-by-zero in exfat_allocate_bitmap
exfat: validate the cluster bitmap bits of directory
exfat: zero out post-EOF page cache on file extension
exfat: fix refcount leak in exfat_find
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ChenXiaoSong
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d159702c94 |
smb/client: add two elements to smb2_error_map_table array
Both status codes are mapped to -EIO. Now all status codes from common/smb2status.h are included in the smb2_error_map_table array(except for the first two zero definitions). Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com> |
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ChenXiaoSong
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523ecd9766 |
smb: rename to STATUS_SMB_NO_PREAUTH_INTEGRITY_HASH_OVERLAP
See MS-SMB2 3.3.5.4. To keep the name consistent with the documentation. Additionally, move STATUS_INVALID_LOCK_RANGE to correct position in order. Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com> |
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ChenXiaoSong
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bf80d1517d |
smb/client: remove unused elements from smb2_error_map_table array
STATUS_SUCCESS and STATUS_WAIT_0 are both zero, and since zero indicates success, they are not needed. Since smb2_print_status() has been removed, the last element in the array is no longer needed. Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com> |
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ChenXiaoSong
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6c1eb31ecb |
smb/client: reduce loop count in map_smb2_to_linux_error() by half
The smb2_error_map_table array currently has 1743 elements. When searching for the last element and calling smb2_print_status(), 3486 comparisons are needed. The loop in smb2_print_status() is unnecessary, smb2_print_status() can be removed, and only iterate over the array once, printing the message when the target status code is found. Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Signed-off-by: Steve French <stfrench@microsoft.com> |
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Paulo Alcantara
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7ad785927d |
smb: client: Add tracepoint for krb5 auth
Add tracepoint to help debugging krb5 auth failures. Example: $ trace-cmd record -e smb3_kerberos_auth $ mount.cifs ... $ trace-cmd report mount.cifs-1667 [003] ..... 5810.668549: smb3_kerberos_auth: vers=2 host=w22-dc1.zelda.test ip=192.168.124.30:445 sec=krb5 uid=0 cruid=0 user=root pid=1667 upcall_target=app err=-126 Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Reviewed-by: David Howells <dhowells@redhat.com> Cc: Pierguido Lambri <plambri@redhat.com> Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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Paulo Alcantara
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a8fce7c807 |
smb: client: improve error message when creating SMB session
When failing to create a new SMB session with 'sec=krb5' for example, the following error message isn't very useful CIFS: VFS: \\srv Send error in SessSetup = -126 Improve it by printing the following instead on dmesg CIFS: VFS: \\srv failed to create a new SMB session with Kerberos: -126 Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Cc: Pierguido Lambri <plambri@redhat.com> Reviewed-by: David Howells <dhowells@redhat.com> Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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Paulo Alcantara
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855982a52f |
smb: client: relax session and tcon reconnect attempts
When the client re-establishes connection to the server, it will queue a worker thread that will attempt to reconnect sessions and tcons on every two seconds, which is kinda overkill as it is a very common scenario when having expired passwords or KRB5 TGT tickets, or deleted shares. Use an exponential backoff strategy to handle session/tcon reconnect attempts in the worker thread to prevent the client from overloading the system when it is very unlikely to re-establish any session/tcon soon while client is idle. Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Reviewed-by: David Howells <dhowells@redhat.com> Cc: Pierguido Lambri <plambri@redhat.com> Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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Linus Torvalds
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4b6b432128 |
fuse update for 6.19
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCaTBU0gAKCRDh3BK/laaZ PD2xAP9BIorxA5cDSyFtAJtj909xe80ai8RNgmenLy4P4RvrvgD9EU7nIFKM6B5O beaFjUaK7Q3z0oWGxkcfDtLV8CUS0Qc= =m8wh -----END PGP SIGNATURE----- Merge tag 'fuse-update-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Add mechanism for cleaning out unused, stale dentries; controlled via a module option (Luis Henriques) - Fix various bugs - Cleanups * tag 'fuse-update-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: Uninitialized variable in fuse_epoch_work() fuse: fix io-uring list corruption for terminated non-committed requests fuse: signal that a fuse inode should exhibit local fs behaviors fuse: Always flush the page cache before FOPEN_DIRECT_IO write fuse: Invalidate the page cache after FOPEN_DIRECT_IO write fuse: rename 'namelen' to 'namesize' fuse: use strscpy instead of strcpy fuse: refactor fuse_conn_put() to remove negative logic. fuse: new work queue to invalidate dentries from old epochs fuse: new work queue to periodically invalidate expired dentries dcache: export shrink_dentry_list() and add new helper d_dispose_if_unused() fuse: add WARN_ON and comment for RCU revalidate fuse: Fix whitespace for fuse_uring_args_to_ring() comment fuse: missing copy_finish in fuse-over-io-uring argument copies fuse: fix readahead reclaim deadlock |
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Praveen K Paladugu
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615a6e7d83 |
mshv: Cleanly shutdown root partition with MSHV
Root partitions running on MSHV currently attempt ACPI power-off, which MSHV intercepts and triggers a Machine Check Exception (MCE), leading to a kernel panic. Root partitions panic with a trace similar to: [ 81.306348] reboot: Power down [ 81.314709] mce: [Hardware Error]: CPU 0: Machine Check Exception: 4 Bank 0: b2000000c0060001 [ 81.314711] mce: [Hardware Error]: TSC 3b8cb60a66 PPIN 11d98332458e4ea9 [ 81.314713] mce: [Hardware Error]: PROCESSOR 0:606a6 TIME 1759339405 SOCKET 0 APIC 0 microcode ffffffff [ 81.314715] mce: [Hardware Error]: Run the above through 'mcelog --ascii' [ 81.314716] mce: [Hardware Error]: Machine check: Processor context corrupt [ 81.314717] Kernel panic - not syncing: Fatal machine check To avoid this, configure the sleep state in the hypervisor and invoke the HVCALL_ENTER_SLEEP_STATE hypercall as the final step in the shutdown sequence. This ensures a clean and safe shutdown of the root partition. Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com> Co-developed-by: Anatol Belski <anbelski@linux.microsoft.com> Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com> Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com> Acked-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Praveen K Paladugu
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f0be2600ac |
mshv: Use reboot notifier to configure sleep state
Configure sleep state information from ACPI in MSHV hypervisor using a reboot notifier. This data allows the hypervisor to correctly power off the host during shutdown. Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com> Co-developed-by: Anatol Belski <anbelski@linux.microsoft.com> Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com> Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com> Reviewed-by: Stansialv Kinsburskii <skinsburskii@linux.miscrosoft.com> Acked-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Praveen K Paladugu
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723c47a221 |
mshv: Add definitions for MSHV sleep state configuration
Add the definitions required to configure sleep states in mshv hypervsior. Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com> Co-developed-by: Anatol Belski <anbelski@linux.microsoft.com> Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com> Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Acked-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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b9a66cd5cc |
mshv: Add support for movable memory regions
Introduce support for movable memory regions in the Hyper-V root partition driver to improve memory management flexibility and enable advanced use cases such as dynamic memory remapping. Mirror the address space between the Linux root partition and guest VMs using HMM. The root partition owns the memory, while guest VMs act as devices with page tables managed via hypercalls. MSHV handles VP intercepts by invoking hmm_range_fault() and updating SLAT entries. When memory is reclaimed, HMM invalidates the relevant regions, prompting MSHV to clear SLAT entries; guest VMs will fault again on access. Integrate mmu_interval_notifier for movable regions, implement handlers for HMM faults and memory invalidation, and update memory region mapping logic to support movable regions. While MMU notifiers are commonly used in virtualization drivers, this implementation leverages HMM (Heterogeneous Memory Management) for its specialized functionality. HMM provides a framework for mirroring, invalidation, and fault handling, reducing boilerplate and improving maintainability compared to generic MMU notifiers. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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c39dda0828 |
mshv: Add refcount and locking to mem regions
Introduce kref-based reference counting and spinlock protection for memory regions in Hyper-V partition management. This change improves memory region lifecycle management and ensures thread-safe access to the region list. Previously, the regions list was protected by the partition mutex. However, this approach is too heavy for frequent fault and invalidation operations. Finer grained locking is now used to improve efficiency and concurrency. This is a precursor to supporting movable memory regions. Fault and invalidation handling for movable regions will require safe traversal of the region list and holding a region reference while performing invalidation or fault operations. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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abceb4297b |
mshv: Fix huge page handling in memory region traversal
The previous code assumed that if a region's first page was huge, the entire region consisted of huge pages and stored this in a large_pages flag. This premise is incorrect not only for movable regions (where pages can be split and merged on invalidate callbacks or page faults), but even for pinned regions: THPs can be split and merged during allocation, so a large, pinned region may contain a mix of huge and regular pages. This change removes the large_pages flag and replaces region-wide assumptions with per-chunk inspection of the actual page size when mapping, unmapping, sharing, and unsharing. This makes huge page handling correct for mixed-page regions and avoids relying on stale metadata that can easily become invalid as memory is remapped. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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e950c30a10 |
mshv: Move region management to mshv_regions.c
Refactor memory region management functions from mshv_root_main.c into mshv_regions.c for better modularity and code organization. Adjust function calls and headers to use the new implementation. Improve maintainability and separation of concerns in the mshv_root module. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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6f6aed2c49 |
mshv: Centralize guest memory region destruction
Centralize guest memory region destruction to prevent resource leaks and inconsistent cleanup across unmap and partition destruction paths. Unify region removal, encrypted partition access recovery, and region invalidation to improve maintainability and reliability. Reduce code duplication and make future updates less error-prone by encapsulating cleanup logic in a single helper. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Stanislav Kinsburskii
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df4ff5f6cf |
mshv: Refactor and rename memory region handling functions
Simplify and unify memory region management to improve code clarity and reliability. Consolidate pinning and invalidation logic, adopt consistent naming, and remove redundant checks to reduce complexity. Enhance documentation and update call sites for maintainability. Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Jinank Jain
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9d70ef7a18 |
mshv: adjust interrupt control structure for ARM64
Interrupt control structure (union hv_interupt_control) has different fields when it comes to x86 vs ARM64. Bring in the correct structure from HyperV header files and adjust the existing interrupt routing code accordingly. Signed-off-by: Jinank Jain <jinankjain@microsoft.com> Signed-off-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Gongwei Li
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b5110eaf67 |
Drivers: hv: use kmalloc_array() instead of kmalloc()
Replace kmalloc() with kmalloc_array() to prevent potential overflow, as recommended in Documentation/process/deprecated.rst. Signed-off-by: Gongwei Li <ligongwei@kylinos.cn> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Anirudh Rayabharam (Microsoft)
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c720e6a873 |
mshv: Add ioctl for self targeted passthrough hvcalls
Allow MSHV_ROOT_HVCALL IOCTL on the /dev/mshv fd. This IOCTL would execute a passthrough hypercall targeting the root/parent partition i.e. HV_PARTITION_ID_SELF. This will be useful for the VMM to query things like supported synthetic processor features, supported VMM capabiliites etc. Since hypercalls targeting the host partition could potentially perform privileged operations, allow only a limited set of hypercalls. To begin with, allow only: HVCALL_GET_PARTITION_PROPERTY HVCALL_GET_PARTITION_PROPERTY_EX Signed-off-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Naman Jain
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7bfe3b8ea6 |
Drivers: hv: Introduce mshv_vtl driver
Provide an interface for Virtual Machine Monitor like OpenVMM and its use as OpenHCL paravisor to control VTL0 (Virtual trust Level). Expose devices and support IOCTLs for features like VTL creation, VTL0 memory management, context switch, making hypercalls, mapping VTL0 address space to VTL2 userspace, getting new VMBus messages and channel events in VTL2 etc. Co-developed-by: Roman Kisel <romank@linux.microsoft.com> Signed-off-by: Roman Kisel <romank@linux.microsoft.com> Co-developed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Signed-off-by: Naman Jain <namjain@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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David Howells
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4ae4dde6f3 |
cifs: Fix handling of a beyond-EOF DIO/unbuffered read over SMB2
If a DIO read or an unbuffered read request extends beyond the EOF, the
server will return a short read and a status code indicating that EOF was
hit, which gets translated to -ENODATA. Note that the client does not cap
the request at i_size, but asks for the amount requested in case there's a
race on the server with a third party.
Now, on the client side, the request will get split into multiple
subrequests if rsize is smaller than the full request size. A subrequest
that starts before or at the EOF and returns short data up to the EOF will
be correctly handled, with the NETFS_SREQ_HIT_EOF flag being set,
indicating to netfslib that we can't read more.
If a subrequest, however, starts after the EOF and not at it, HIT_EOF will
not be flagged, its error will be set to -ENODATA and it will be abandoned.
This will cause the request as a whole to fail with -ENODATA.
Fix this by setting NETFS_SREQ_HIT_EOF on any subrequest that lies beyond
the EOF marker.
Fixes:
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Rajasi Mandal
|
ef529f655a |
cifs: client: allow changing multichannel mount options on remount
Previously, the client did not update a session's channel state when multichannel or max_channels mount options were changed via remount. This led to inconsistent behavior and prevented enabling or disabling multichannel support without a full unmount/remount cycle. Enable dynamic reconfiguration of multichannel and max_channels during remount by: - Introducing smb3_sync_ses_chan_max(), a centralized function for channel updates which synchronizes the session's channels with the updated configuration. - Replacing cifs_disable_secondary_channels() with cifs_decrease_secondary_channels(), which accepts a disable_mchan flag to support multichannel disable when the server stops supporting multichannel. - Updating remount logic to detect changes in multichannel or max_channels and trigger appropriate session/channel updates. Current limitation: - The query_interfaces worker runs even when max_channels=1 so that multichannel can be enabled later via remount without requiring an unmount. This is a temporary approach and may be refined in the future. Users can safely modify multichannel and max_channels on an existing mount. The client will correctly adjust the session's channel state to match the new configuration, preserving durability where possible and avoiding unnecessary disconnects. Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Rajasi Mandal <rajasimandal@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> |
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David Howells
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32a6086809 |
cifs: Do some preparation prior to organising the function declarations
Make some preparatory cleanups prior to running a script to organise the
function declarations within the fs/smb/client/ headers. These include:
(1) Remove "inline" from the dummy cifs_proc_init/clean() functions as
they are in a .c file.
(2) Move should_compress()'s kdoc comment to the .c file and remove kdoc
markers from the comments.
(3) Rename CIFS_ALLOW_INSECURE_LEGACY in #endif comments to have CONFIG_
on the front to allow the script to recognise it.
(4) Don't let comments have bare words at the left margin as that confused
the simplistic function detection code in the script.
(5) Adjust some argument lists so that when and if the cleanup script is
run they don't end up over 100 chars.
(6) Fix a few comments to have missing '*' added or the "*/" moved to
their own lines so that checkpatch doesn't moan over the cleanup
script patch.
(7) Move struct cifs_calc_sig_ctx to cifsglob.h.
(8) Remove some __KERNEL__ conditionals.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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David Howells
|
f80ac7eda1 |
cifs: Add a tracepoint to log EIO errors
Add a tracepoint to log EIO errors and give it the capacity to convey up to two integers of information. This is then wrapped with three functions: int smb_EIO(enum smb_eio_trace trace) int smb_EIO1(enum smb_eio_trace trace, unsigned long info) int smb_EIO2(enum smb_eio_trace trace, unsigned long info, unsigned long info2) depending on how many bits of info are desired to be logged with any particular trace. The functions all return -EIO and can be used in place of -EIO. The trace argument is an enum value that gets translated to a string when the trace is printed. This makes is easier to log EIO instances when the client is under high load than turning on a printk wrapper such as cifs_dbg(). Granted, EIO could have its own separate EIO printing since EIO shouldn't happen. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: linux-cifs@vger.kernel.org cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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David Howells
|
3a7b6d0afe |
cifs: Don't need state locking in smb2_get_mid_entry()
There's no need to get ->srv_lock or ->ses_lock in smb2_get_mid_entry() as all that happens of relevance (to the lock) inside the locked sections is the reading of one status value in each. Replace the locking with READ_ONCE() and use a switch instead of a chain of if-statements. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: Tom Talpey <tom@talpey.com> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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David Howells
|
87fba18abb |
cifs: Remove the server pointer from smb_message
Remove the server pointer from smb_message and instead pass it down to all the things that access it. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: Tom Talpey <tom@talpey.com> (RDMA, smbdirect) cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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David Howells
|
6a86a4cc28 |
cifs: Fix specification of function pointers
Change the mid_receive_t, mid_callback_t and mid_handle_t function pointers to have the pointer marker in the typedef. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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David Howells
|
28405cb5b2 |
cifs: Replace SendReceiveBlockingLock() with SendReceive() plus flags
Replace the smb1 transport's SendReceiveBlockingLock() with SendReceive() plus a couple of flags. This will then allow that to pick up the transport changes there. The first flag, CIFS_INTERRUPTIBLE_WAIT, is added to indicate that the wait should be interruptible and the second, CIFS_WINDOWS_LOCK, indicates that we need to send a Lock command with unlock type rather than a Cancel. send_lock_cancel() is then called from cifs_lock_cancel() which is called from the main transport loop in compound_send_recv(). [!] I *think* the error code handling is probably right. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: Tom Talpey <tom@talpey.com> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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|
David Howells
|
62432a3f51 |
cifs: Clean up some places where an extra kvec[] was required for rfc1002
Clean up some places where previously an extra element in the kvec array was being used to hold an rfc1002 header for SMB1 (a previous patch removed this and generated it on the fly as for SMB2/3). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: Tom Talpey <tom@talpey.com> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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|
David Howells
|
6be09580df |
cifs: Make smb1's SendReceive() wrap cifs_send_recv()
Make the smb1 transport's SendReceive() simply wrap cifs_send_recv() as does SendReceive2(). This will then allow that to pick up the transport changes there. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: Tom Talpey <tom@talpey.com> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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|
David Howells
|
83bfbd0bb9 |
cifs: Remove the RFC1002 header from smb_hdr
Remove the RFC1002 header from struct smb_hdr as used for SMB-1.0. This simplifies the SMB-1.0 code by simplifying a lot of places that have to add or subtract 4 to work around the fact that the RFC1002 header isn't really part of the message and the base for various offsets within the message is from the base of the smb_hdr, not the RFC1002 header. Further, clean up a bunch of places that require an extra kvec struct specifically pointing to the RFC1002 header, such that kvec[0].iov_base must be exactly 4 bytes before kvec[1].iov_base. This allows the header preamble size stuff to be removed too. The size of the request and response message are then handed around either directly or by summing the size of all the iov_len members in the kvec array for which we have a count. Also, this simplifies and cleans up the common transmission and receive paths for SMB1 and SMB2/3 as there no longer needs to be special handling casing for SMB1 messages as the RFC1002 header is now generated on the fly for SMB1 as it is for SMB2/3. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Tom Talpey <tom@talpey.com> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: Shyam Prasad N <sprasad@microsoft.com> cc: linux-cifs@vger.kernel.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
||
|
David Howells
|
9d85ac939d |
cifs: Fix handling of a beyond-EOF DIO/unbuffered read over SMB1
If a DIO read or an unbuffered read request extends beyond the EOF, the
server will return a short read and a status code indicating that EOF was
hit, which gets translated to -ENODATA. Note that the client does not cap
the request at i_size, but asks for the amount requested in case there's a
race on the server with a third party.
Now, on the client side, the request will get split into multiple
subrequests if rsize is smaller than the full request size. A subrequest
that starts before or at the EOF and returns short data up to the EOF will
be correctly handled, with the NETFS_SREQ_HIT_EOF flag being set,
indicating to netfslib that we can't read more.
If a subrequest, however, starts after the EOF and not at it, HIT_EOF will
not be flagged, its error will be set to -ENODATA and it will be abandoned.
This will cause the request as a whole to fail with -ENODATA.
Fix this by setting NETFS_SREQ_HIT_EOF on any subrequest that lies beyond
the EOF marker.
This can be reproduced by mounting with "cache=none,sign,vers=1.0" and
doing a read of a file that's significantly bigger than the size of the
file (e.g. attempting to read 64KiB from a 16KiB file).
Fixes:
|
||
|
Linus Torvalds
|
7cd122b552 |
Some filesystems use a kinda-sorta controlled dentry refcount leak to pin
dentries of created objects in dcache (and undo it when removing those).
Reference is grabbed and not released, but it's not actually _stored_
anywhere. That works, but it's hard to follow and verify; among other
things, we have no way to tell _which_ of the increments is intended
to be an unpaired one. Worse, on removal we need to decide whether
the reference had already been dropped, which can be non-trivial if
that removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag (DCACHE_PERSISTENT)
marking those "leaked" dentries. Having it set claims responsibility
for +1 in refcount.
The end result this series is aiming for:
* get these unbalanced dget() and dput() replaced with new primitives that
would, in addition to adjusting refcount, set and clear persistency flag.
* instead of having kill_litter_super() mess with removing the remaining
"leaked" references (e.g. for all tmpfs files that hadn't been removed
prior to umount), have the regular shrink_dcache_for_umount() strip
DCACHE_PERSISTENT of all dentries, dropping the corresponding
reference if it had been set. After that kill_litter_super() becomes
an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many places
in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary pieces
have already gone into mainline. This chunk is finally getting to the
meat of that stuff - infrastructure and most of the conversions to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull persistent dentry infrastructure and conversion from Al Viro:
"Some filesystems use a kinda-sorta controlled dentry refcount leak to
pin dentries of created objects in dcache (and undo it when removing
those). A reference is grabbed and not released, but it's not actually
_stored_ anywhere.
That works, but it's hard to follow and verify; among other things, we
have no way to tell _which_ of the increments is intended to be an
unpaired one. Worse, on removal we need to decide whether the
reference had already been dropped, which can be non-trivial if that
removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag
(DCACHE_PERSISTENT) marking those "leaked" dentries. Having it set
claims responsibility for +1 in refcount.
The end result this series is aiming for:
- get these unbalanced dget() and dput() replaced with new primitives
that would, in addition to adjusting refcount, set and clear
persistency flag.
- instead of having kill_litter_super() mess with removing the
remaining "leaked" references (e.g. for all tmpfs files that hadn't
been removed prior to umount), have the regular
shrink_dcache_for_umount() strip DCACHE_PERSISTENT of all dentries,
dropping the corresponding reference if it had been set. After that
kill_litter_super() becomes an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many
places in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary
pieces have already gone into mainline. This chunk is finally getting
to the meat of that stuff - infrastructure and most of the conversions
to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here"
* tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits)
d_make_discardable(): warn if given a non-persistent dentry
kill securityfs_recursive_remove()
convert securityfs
get rid of kill_litter_super()
convert rust_binderfs
convert nfsctl
convert rpc_pipefs
convert hypfs
hypfs: swich hypfs_create_u64() to returning int
hypfs: switch hypfs_create_str() to returning int
hypfs: don't pin dentries twice
convert gadgetfs
gadgetfs: switch to simple_remove_by_name()
convert functionfs
functionfs: switch to simple_remove_by_name()
functionfs: fix the open/removal races
functionfs: need to cancel ->reset_work in ->kill_sb()
functionfs: don't bother with ffs->ref in ffs_data_{opened,closed}()
functionfs: don't abuse ffs_data_closed() on fs shutdown
convert selinuxfs
...
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||
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Linus Torvalds
|
7203ca412f |
Significant patch series in this merge are as follows:
- The 10 patch series "__vmalloc()/kvmalloc() and no-block support" from
Uladzislau Rezki reworks the vmalloc() code to support non-blocking
allocations (GFP_ATOIC, GFP_NOWAIT).
- The 2 patch series "ksm: fix exec/fork inheritance" from xu xin fixes
a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited
across fork/exec.
- The 4 patch series "mm/zswap: misc cleanup of code and documentations"
from SeongJae Park does some light maintenance work on the zswap code.
- The 5 patch series "mm/page_owner: add debugfs files 'show_handles'
and 'show_stacks_handles'" from Mauricio Faria de Oliveira enhances the
/sys/kernel/debug/page_owner debug feature. It adds unique identifiers
to differentiate the various stack traces so that userspace monitoring
tools can better match stack traces over time.
- The 2 patch series "mm/page_alloc: pcp->batch cleanups" from Joshua
Hahn makes some minor alterations to the page allocator's per-cpu-pages
feature.
- The 2 patch series "Improve UFFDIO_MOVE scalability by removing
anon_vma lock" from Lokesh Gidra addresses a scalability issue in
userfaultfd's UFFDIO_MOVE operation.
- The 2 patch series "kasan: cleanups for kasan_enabled() checks" from
Sabyrzhan Tasbolatov performs some cleanup in the KASAN code.
- The 2 patch series "drivers/base/node: fold node register and
unregister functions" from Donet Tom cleans up the NUMA node handling
code a little.
- The 4 patch series "mm: some optimizations for prot numa" from Kefeng
Wang provides some cleanups and small optimizations to the NUMA
allocation hinting code.
- The 5 patch series "mm/page_alloc: Batch callers of
free_pcppages_bulk" from Joshua Hahn addresses long lock hold times at
boot on large machines. These were causing (harmless) softlockup
warnings.
- The 2 patch series "optimize the logic for handling dirty file folios
during reclaim" from Baolin Wang removes some now-unnecessary work from
page reclaim.
- The 10 patch series "mm/damon: allow DAMOS auto-tuned for per-memcg
per-node memory usage" from SeongJae Park enhances the DAMOS auto-tuning
feature.
- The 2 patch series "mm/damon: fixes for address alignment issues in
DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan fixes DAMON_LRU_SORT
and DAMON_RECLAIM with certain userspace configuration.
- The 15 patch series "expand mmap_prepare functionality, port more
users" from Lorenzo Stoakes enhances the new(ish)
file_operations.mmap_prepare() method and ports additional callsites
from the old ->mmap() over to ->mmap_prepare().
- The 8 patch series "Fix stale IOTLB entries for kernel address space"
from Lu Baolu fixes a bug (and possible security issue on non-x86) in
the IOMMU code. In some situations the IOMMU could be left hanging onto
a stale kernel pagetable entry.
- The 4 patch series "mm/huge_memory: cleanup __split_unmapped_folio()"
from Wei Yang cleans up and optimizes the folio splitting code.
- The 5 patch series "mm, swap: misc cleanup and bugfix" from Kairui
Song implements some cleanups and a minor fix in the swap discard code.
- The 8 patch series "mm/damon: misc documentation fixups" from SeongJae
Park does as advertised.
- The 9 patch series "mm/damon: support pin-point targets removal" from
SeongJae Park permits userspace to remove a specific monitoring target
in the middle of the current targets list.
- The 2 patch series "mm: MISC follow-up patches for linux/pgalloc.h"
from Harry Yoo implements a couple of cleanups related to mm header file
inclusion.
- The 2 patch series "mm/swapfile.c: select swap devices of default
priority round robin" from Baoquan He improves the selection of swap
devices for NUMA machines.
- The 3 patch series "mm: Convert memory block states (MEM_*) macros to
enums" from Israel Batista changes the memory block labels from macros
to enums so they will appear in kernel debug info.
- The 3 patch series "ksm: perform a range-walk to jump over holes in
break_ksm" from Pedro Demarchi Gomes addresses an inefficiency when KSM
unmerges an address range.
- The 22 patch series "mm/damon/tests: fix memory bugs in kunit tests"
from SeongJae Park fixes leaks and unhandled malloc() failures in DAMON
userspace unit tests.
- The 2 patch series "some cleanups for pageout()" from Baolin Wang
cleans up a couple of minor things in the page scanner's
writeback-for-eviction code.
- The 2 patch series "mm/hugetlb: refactor sysfs/sysctl interfaces" from
Hui Zhu moves hugetlb's sysfs/sysctl handling code into a new file.
- The 9 patch series "introduce VM_MAYBE_GUARD and make it sticky" from
Lorenzo Stoakes makes the VMA guard regions available in /proc/pid/smaps
and improves the mergeability of guarded VMAs.
- The 2 patch series "mm: perform guard region install/remove under VMA
lock" from Lorenzo Stoakes reduces mmap lock contention for callers
performing VMA guard region operations.
- The 2 patch series "vma_start_write_killable" from Matthew Wilcox
starts work in permitting applications to be killed when they are
waiting on a read_lock on the VMA lock.
- The 11 patch series "mm/damon/tests: add more tests for online
parameters commit" from SeongJae Park adds additional userspace testing
of DAMON's "commit" feature.
- The 9 patch series "mm/damon: misc cleanups" from SeongJae Park does
that.
- The 2 patch series "make VM_SOFTDIRTY a sticky VMA flag" from Lorenzo
Stoakes addresses the possible loss of a VMA's VM_SOFTDIRTY flag when
that VMA is merged with another.
- The 16 patch series "mm: support device-private THP" from Balbir Singh
introduces support for Transparent Huge Page (THP) migration in zone
device-private memory.
- The 3 patch series "Optimize folio split in memory failure" from Zi
Yan optimizes folio split operations in the memory failure code.
- The 2 patch series "mm/huge_memory: Define split_type and consolidate
split support checks" from Wei Yang provides some more cleanups in the
folio splitting code.
- The 16 patch series "mm: remove is_swap_[pte, pmd]() + non-swap
entries, introduce leaf entries" from Lorenzo Stoakes cleans up our
handling of pagetable leaf entries by introducing the concept of
'software leaf entries', of type softleaf_t.
- The 4 patch series "reparent the THP split queue" from Muchun Song
reparents the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory resources.
- The 3 patch series "unify PMD scan results and remove redundant
cleanup" from Wei Yang does a little cleanup in the hugepage collapse
code.
- The 6 patch series "zram: introduce writeback bio batching" from
Sergey Senozhatsky improves zram writeback efficiency by introducing
batched bio writeback support.
- The 4 patch series "memcg: cleanup the memcg stats interfaces" from
Shakeel Butt cleans up our handling of the interrupt safety of some
memcg stats.
- The 4 patch series "make vmalloc gfp flags usage more apparent" from
Vishal Moola cleans up vmalloc's handling of incoming GFP flags.
- The 6 patch series "mm: Add soft-dirty and uffd-wp support for RISC-V"
from Chunyan Zhang teches soft dirty and userfaultfd write protect
tracking to use RISC-V's Svrsw60t59b extension.
- The 5 patch series "mm: swap: small fixes and comment cleanups" from
Youngjun Park fixes a small bug and cleans up some of the swap code.
- The 4 patch series "initial work on making VMA flags a bitmap" from
Lorenzo Stoakes starts work on converting the vma struct's flags to a
bitmap, so we stop running out of them, especially on 32-bit.
- The 2 patch series "mm/swapfile: fix and cleanup swap list iterations"
from Youngjun Park addresses a possible bug in the swap discard code and
cleans things up a little.
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Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"__vmalloc()/kvmalloc() and no-block support" (Uladzislau Rezki)
Rework the vmalloc() code to support non-blocking allocations
(GFP_ATOIC, GFP_NOWAIT)
"ksm: fix exec/fork inheritance" (xu xin)
Fix a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not
inherited across fork/exec
"mm/zswap: misc cleanup of code and documentations" (SeongJae Park)
Some light maintenance work on the zswap code
"mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" (Mauricio Faria de Oliveira)
Enhance the /sys/kernel/debug/page_owner debug feature by adding
unique identifiers to differentiate the various stack traces so
that userspace monitoring tools can better match stack traces over
time
"mm/page_alloc: pcp->batch cleanups" (Joshua Hahn)
Minor alterations to the page allocator's per-cpu-pages feature
"Improve UFFDIO_MOVE scalability by removing anon_vma lock" (Lokesh Gidra)
Address a scalability issue in userfaultfd's UFFDIO_MOVE operation
"kasan: cleanups for kasan_enabled() checks" (Sabyrzhan Tasbolatov)
"drivers/base/node: fold node register and unregister functions" (Donet Tom)
Clean up the NUMA node handling code a little
"mm: some optimizations for prot numa" (Kefeng Wang)
Cleanups and small optimizations to the NUMA allocation hinting
code
"mm/page_alloc: Batch callers of free_pcppages_bulk" (Joshua Hahn)
Address long lock hold times at boot on large machines. These were
causing (harmless) softlockup warnings
"optimize the logic for handling dirty file folios during reclaim" (Baolin Wang)
Remove some now-unnecessary work from page reclaim
"mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" (SeongJae Park)
Enhance the DAMOS auto-tuning feature
"mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" (Quanmin Yan)
Fix DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace
configuration
"expand mmap_prepare functionality, port more users" (Lorenzo Stoakes)
Enhance the new(ish) file_operations.mmap_prepare() method and port
additional callsites from the old ->mmap() over to ->mmap_prepare()
"Fix stale IOTLB entries for kernel address space" (Lu Baolu)
Fix a bug (and possible security issue on non-x86) in the IOMMU
code. In some situations the IOMMU could be left hanging onto a
stale kernel pagetable entry
"mm/huge_memory: cleanup __split_unmapped_folio()" (Wei Yang)
Clean up and optimize the folio splitting code
"mm, swap: misc cleanup and bugfix" (Kairui Song)
Some cleanups and a minor fix in the swap discard code
"mm/damon: misc documentation fixups" (SeongJae Park)
"mm/damon: support pin-point targets removal" (SeongJae Park)
Permit userspace to remove a specific monitoring target in the
middle of the current targets list
"mm: MISC follow-up patches for linux/pgalloc.h" (Harry Yoo)
A couple of cleanups related to mm header file inclusion
"mm/swapfile.c: select swap devices of default priority round robin" (Baoquan He)
improve the selection of swap devices for NUMA machines
"mm: Convert memory block states (MEM_*) macros to enums" (Israel Batista)
Change the memory block labels from macros to enums so they will
appear in kernel debug info
"ksm: perform a range-walk to jump over holes in break_ksm" (Pedro Demarchi Gomes)
Address an inefficiency when KSM unmerges an address range
"mm/damon/tests: fix memory bugs in kunit tests" (SeongJae Park)
Fix leaks and unhandled malloc() failures in DAMON userspace unit
tests
"some cleanups for pageout()" (Baolin Wang)
Clean up a couple of minor things in the page scanner's
writeback-for-eviction code
"mm/hugetlb: refactor sysfs/sysctl interfaces" (Hui Zhu)
Move hugetlb's sysfs/sysctl handling code into a new file
"introduce VM_MAYBE_GUARD and make it sticky" (Lorenzo Stoakes)
Make the VMA guard regions available in /proc/pid/smaps and
improves the mergeability of guarded VMAs
"mm: perform guard region install/remove under VMA lock" (Lorenzo Stoakes)
Reduce mmap lock contention for callers performing VMA guard region
operations
"vma_start_write_killable" (Matthew Wilcox)
Start work on permitting applications to be killed when they are
waiting on a read_lock on the VMA lock
"mm/damon/tests: add more tests for online parameters commit" (SeongJae Park)
Add additional userspace testing of DAMON's "commit" feature
"mm/damon: misc cleanups" (SeongJae Park)
"make VM_SOFTDIRTY a sticky VMA flag" (Lorenzo Stoakes)
Address the possible loss of a VMA's VM_SOFTDIRTY flag when that
VMA is merged with another
"mm: support device-private THP" (Balbir Singh)
Introduce support for Transparent Huge Page (THP) migration in zone
device-private memory
"Optimize folio split in memory failure" (Zi Yan)
"mm/huge_memory: Define split_type and consolidate split support checks" (Wei Yang)
Some more cleanups in the folio splitting code
"mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" (Lorenzo Stoakes)
Clean up our handling of pagetable leaf entries by introducing the
concept of 'software leaf entries', of type softleaf_t
"reparent the THP split queue" (Muchun Song)
Reparent the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory
resources
"unify PMD scan results and remove redundant cleanup" (Wei Yang)
A little cleanup in the hugepage collapse code
"zram: introduce writeback bio batching" (Sergey Senozhatsky)
Improve zram writeback efficiency by introducing batched bio
writeback support
"memcg: cleanup the memcg stats interfaces" (Shakeel Butt)
Clean up our handling of the interrupt safety of some memcg stats
"make vmalloc gfp flags usage more apparent" (Vishal Moola)
Clean up vmalloc's handling of incoming GFP flags
"mm: Add soft-dirty and uffd-wp support for RISC-V" (Chunyan Zhang)
Teach soft dirty and userfaultfd write protect tracking to use
RISC-V's Svrsw60t59b extension
"mm: swap: small fixes and comment cleanups" (Youngjun Park)
Fix a small bug and clean up some of the swap code
"initial work on making VMA flags a bitmap" (Lorenzo Stoakes)
Start work on converting the vma struct's flags to a bitmap, so we
stop running out of them, especially on 32-bit
"mm/swapfile: fix and cleanup swap list iterations" (Youngjun Park)
Address a possible bug in the swap discard code and clean things
up a little
[ This merge also reverts commit
|