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The VERW mitigation at exit-to-user is enabled via a static branch
mds_user_clear. This static branch is never toggled after boot, and can
be safely replaced with an ALTERNATIVE() which is convenient to use in
asm.
Switch to ALTERNATIVE() to use the VERW mitigation late in exit-to-user
path. Also remove the now redundant VERW in exc_nmi() and
arch_exit_to_user_mode().
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20240213-delay-verw-v8-4-a6216d83edb7%40linux.intel.com
Add the MIDR value of Microsoft Azure Cobalt 100, which is a Microsoft
implemented CPU based on r0p0 of the ARM Neoverse N2 CPU, and therefore
suffers from all the same errata.
CC: stable@vger.kernel.org # 5.15+
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240214175522.2457857-1-eahariha@linux.microsoft.com
Signed-off-by: Will Deacon <will@kernel.org>
- Fix shadow call stack patching with LTO=full
- Fix voluntary preemption of the FPSIMD registers from assembly code
- Fix workaround for A520 CPU erratum #2966298 and extend to A510
- Fix SME issues that resulted in corruption of the register state
- Minor fixes (missing includes, formatting)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"I think the main one is fixing the dynamic SCS patching when full LTO
is enabled (clang was silently getting this horribly wrong), but it's
all good stuff.
Rob just pointed out that the fix to the workaround for erratum
#2966298 might not be necessary, but in the worst case it's harmless
and since the official description leaves a little to be desired here,
I've left it in.
Summary:
- Fix shadow call stack patching with LTO=full
- Fix voluntary preemption of the FPSIMD registers from assembly code
- Fix workaround for A520 CPU erratum #2966298 and extend to A510
- Fix SME issues that resulted in corruption of the register state
- Minor fixes (missing includes, formatting)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix silcon-errata.rst formatting
arm64/sme: Always exit sme_alloc() early with existing storage
arm64/fpsimd: Remove spurious check for SVE support
arm64/ptrace: Don't flush ZA/ZT storage when writing ZA via ptrace
arm64: entry: simplify kernel_exit logic
arm64: entry: fix ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD
arm64: errata: Add Cortex-A510 speculative unprivileged load workaround
arm64: Rename ARM64_WORKAROUND_2966298
arm64: fpsimd: Bring cond_yield asm macro in line with new rules
arm64: scs: Work around full LTO issue with dynamic SCS
arm64: irq: include <linux/cpumask.h>
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Merge tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 TDX updates from Dave Hansen:
"This contains the initial support for host-side TDX support so that
KVM can run TDX-protected guests. This does not include the actual
KVM-side support which will come from the KVM folks. The TDX host
interactions with kexec also needs to be ironed out before this is
ready for prime time, so this code is currently Kconfig'd off when
kexec is on.
The majority of the code here is the kernel telling the TDX module
which memory to protect and handing some additional memory over to it
to use to store TDX module metadata. That sounds pretty simple, but
the TDX architecture is rather flexible and it takes quite a bit of
back-and-forth to say, "just protect all memory, please."
There is also some code tacked on near the end of the series to handle
a hardware erratum. The erratum can make software bugs such as a
kernel write to TDX-protected memory cause a machine check and
masquerade as a real hardware failure. The erratum handling watches
out for these and tries to provide nicer user errors"
* tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/virt/tdx: Make TDX host depend on X86_MCE
x86/virt/tdx: Disable TDX host support when kexec is enabled
Documentation/x86: Add documentation for TDX host support
x86/mce: Differentiate real hardware #MCs from TDX erratum ones
x86/cpu: Detect TDX partial write machine check erratum
x86/virt/tdx: Handle TDX interaction with sleep and hibernation
x86/virt/tdx: Initialize all TDMRs
x86/virt/tdx: Configure global KeyID on all packages
x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID
x86/virt/tdx: Designate reserved areas for all TDMRs
x86/virt/tdx: Allocate and set up PAMTs for TDMRs
x86/virt/tdx: Fill out TDMRs to cover all TDX memory regions
x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions
x86/virt/tdx: Get module global metadata for module initialization
x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory
x86/virt/tdx: Add skeleton to enable TDX on demand
x86/virt/tdx: Add SEAMCALL error printing for module initialization
x86/virt/tdx: Handle SEAMCALL no entropy error in common code
x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
x86/virt/tdx: Define TDX supported page sizes as macros
...
Remove the errant blank lines to make the desired empty row separators
around the Fujitsu and ASR entries in the main table, rather than them
being their own separate tables which then look odd in the HTML view.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/b6637654eda761e224f828a44a7bbc1eadf2ef88.1705511145.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Here is the big set of char/misc and other driver subsystem changes for
6.8-rc1. Lots of stuff in here, but first off, you will get a merge
conflict in drivers/android/binder_alloc.c when merging this tree due to
changing coming in through the -mm tree.
The resolution of the merge issue can be found here:
https://lore.kernel.org/r/20231207134213.25631ae9@canb.auug.org.au
or in a simpler patch form in that thread:
https://lore.kernel.org/r/ZXHzooF07LfQQYiE@google.com
If there are issues with the merge of this file, please let me know.
Other than lots of binder driver changes (as you can see by the merge
conflicts) included in here are:
- lots of iio driver updates and additions
- spmi driver updates
- eeprom driver updates
- firmware driver updates
- ocxl driver updates
- mhi driver updates
- w1 driver updates
- nvmem driver updates
- coresight driver updates
- platform driver remove callback api changes
- tags.sh script updates
- bus_type constant marking cleanups
- lots of other small driver updates
All of these have been in linux-next for a while with no reported issues
(other than the binder merge conflict.)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem changes
for 6.8-rc1.
Other than lots of binder driver changes (as you can see by the merge
conflicts) included in here are:
- lots of iio driver updates and additions
- spmi driver updates
- eeprom driver updates
- firmware driver updates
- ocxl driver updates
- mhi driver updates
- w1 driver updates
- nvmem driver updates
- coresight driver updates
- platform driver remove callback api changes
- tags.sh script updates
- bus_type constant marking cleanups
- lots of other small driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (341 commits)
android: removed duplicate linux/errno
uio: Fix use-after-free in uio_open
drivers: soc: xilinx: add check for platform
firmware: xilinx: Export function to use in other module
scripts/tags.sh: remove find_sources
scripts/tags.sh: use -n to test archinclude
scripts/tags.sh: add local annotation
scripts/tags.sh: use more portable -path instead of -wholename
scripts/tags.sh: Update comment (addition of gtags)
firmware: zynqmp: Convert to platform remove callback returning void
firmware: turris-mox-rwtm: Convert to platform remove callback returning void
firmware: stratix10-svc: Convert to platform remove callback returning void
firmware: stratix10-rsu: Convert to platform remove callback returning void
firmware: raspberrypi: Convert to platform remove callback returning void
firmware: qemu_fw_cfg: Convert to platform remove callback returning void
firmware: mtk-adsp-ipc: Convert to platform remove callback returning void
firmware: imx-dsp: Convert to platform remove callback returning void
firmware: coreboot_table: Convert to platform remove callback returning void
firmware: arm_scpi: Convert to platform remove callback returning void
firmware: arm_scmi: Convert to platform remove callback returning void
...
* Support for many new extensions in hwprobe, along with a handful of
cleanups.
* Various cleanups to our page table handling code, so we alwayse use
{READ,WRITE}_ONCE.
* Support for the which-cpus flavor of hwprobe.
* Support for XIP kernels has been resurrected.
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Merge tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Support for many new extensions in hwprobe, along with a handful of
cleanups
- Various cleanups to our page table handling code, so we alwayse use
{READ,WRITE}_ONCE
- Support for the which-cpus flavor of hwprobe
- Support for XIP kernels has been resurrected
* tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (52 commits)
riscv: hwprobe: export Zicond extension
riscv: hwprobe: export Zacas ISA extension
riscv: add ISA extension parsing for Zacas
dt-bindings: riscv: add Zacas ISA extension description
riscv: hwprobe: export Ztso ISA extension
riscv: add ISA extension parsing for Ztso
use linux/export.h rather than asm-generic/export.h
riscv: Remove SHADOW_OVERFLOW_STACK_SIZE macro
riscv; fix __user annotation in save_v_state()
riscv: fix __user annotation in traps_misaligned.c
riscv: Select ARCH_WANTS_NO_INSTR
riscv: Remove obsolete rv32_defconfig file
riscv: Allow disabling of BUILTIN_DTB for XIP
riscv: Fixed wrong register in XIP_FIXUP_FLASH_OFFSET macro
riscv: Make XIP bootable again
riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC
riscv: Fix module_alloc() that did not reset the linear mapping permissions
riscv: Fix wrong usage of lm_alias() when splitting a huge linear mapping
riscv: Check if the code to patch lies in the exit section
riscv: Use the same CPU operations for all CPUs
...
Implement the workaround for ARM Cortex-A510 erratum 3117295. On an
affected Cortex-A510 core, a speculatively executed unprivileged load
might leak data from a privileged load via a cache side channel. The
issue only exists for loads within a translation regime with the same
translation (e.g. same ASID and VMID). Therefore, the issue only affects
the return to EL0.
The erratum and workaround are the same as ARM Cortex-A520 erratum
2966298, so reuse the existing workaround.
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20240110-arm-errata-a510-v1-2-d02bc51aeeee@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
- The minimum Sphinx requirement has been raised to 2.4.4, following a
warning that was added in 6.2.
- Some reworking of the Documentation/process front page to, hopefully,
make it more useful.
- Various kernel-doc tweaks to, for example, make it deal properly with
__counted_by annotations.
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the delightful
consequence of adding some 600 warnings to the docs build. A sustained
effort by Randy, Vegard, and myself has addressed almost all of those,
bringing the documentation back into sync with the code. The fixes are
going through the appropriate maintainer trees.
- Various improvements to the HTML rendered docs, including automatic links
to Git revisions and a nice new pulldown to make translations easy to
access.
- Speaking of translations, more of those for Spanish and Chinese.
...plus the usual stream of documentation updates and typo fixes.
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Merge tag 'docs-6.8' of git://git.lwn.net/linux
Pull documentation update from Jonathan Corbet:
"Another moderately busy cycle for documentation, including:
- The minimum Sphinx requirement has been raised to 2.4.4, following
a warning that was added in 6.2
- Some reworking of the Documentation/process front page to,
hopefully, make it more useful
- Various kernel-doc tweaks to, for example, make it deal properly
with __counted_by annotations
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the
delightful consequence of adding some 600 warnings to the docs
build. A sustained effort by Randy, Vegard, and myself has
addressed almost all of those, bringing the documentation back into
sync with the code. The fixes are going through the appropriate
maintainer trees
- Various improvements to the HTML rendered docs, including automatic
links to Git revisions and a nice new pulldown to make translations
easy to access
- Speaking of translations, more of those for Spanish and Chinese
... plus the usual stream of documentation updates and typo fixes"
* tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits)
MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL
A reworked process/index.rst
ring-buffer/Documentation: Add documentation on buffer_percent file
Translated the RISC-V architecture boot documentation.
Docs: remove mentions of fdformat from util-linux
Docs/zh_CN: Fix the meaning of DEBUG to pr_debug()
Documentation: move driver-api/dcdbas to userspace-api/
Documentation: move driver-api/isapnp to userspace-api/
Documentation/core-api : fix typo in workqueue
Documentation/trace: Fixed typos in the ftrace FLAGS section
kernel-doc: handle a void function without producing a warning
scripts/get_abi.pl: ignore some temp files
docs: kernel_abi.py: fix command injection
scripts/get_abi: fix source path leak
CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer
docs: translations: add translations links when they exist
kernel-doc: Align quick help and the code
MAINTAINERS: add reviewer for Spanish translations
docs: ignore __counted_by attribute in structure definitions
scripts: kernel-doc: Clarify missing struct member description
..
The kernel-feat directive passes its argument straight to the shell.
This is unfortunate and unnecessary.
Let's always use paths relative to $srctree/Documentation/ and use
subprocess.check_call() instead of subprocess.Popen(shell=True).
This also makes the code shorter.
This is analogous to commit 3231dd586277 ("docs: kernel_abi.py: fix
command injection") where we did exactly the same thing for
kernel_abi.py, somehow I completely missed this one.
Link: https://fosstodon.org/@jani/111676532203641247
Reported-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240110174758.3680506-1-vegard.nossum@oracle.com
Clément Léger <cleger@rivosinc.com> says:
This series add support for a few more extensions that are present in
the RVA22U64/RVA23U64 (either mandatory or optional) and that are useful
for userspace:
- Zicond
- Zacas
- Ztso
Series currently based on riscv/for-next.
* b4-shazam-lts:
riscv: hwprobe: export Zicond extension
riscv: hwprobe: export Zacas ISA extension
riscv: add ISA extension parsing for Zacas
dt-bindings: riscv: add Zacas ISA extension description
riscv: hwprobe: export Ztso ISA extension
riscv: add ISA extension parsing for Ztso
Link: https://lore.kernel.org/r/20231220155723.684081-1-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Andrew Jones <ajones@ventanamicro.com> says:
This series introduces a flag for the hwprobe syscall which effectively
reverses its behavior from getting the values of keys for a set of cpus
to getting the cpus for a set of key-value pairs.
* b4-shazam-merge:
RISC-V: selftests: Add which-cpus hwprobe test
RISC-V: hwprobe: Introduce which-cpus flag
RISC-V: Move the hwprobe syscall to its own file
RISC-V: hwprobe: Clarify cpus size parameter
Link: https://lore.kernel.org/r/20231122164700.127954-6-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
- A micro-optimization got misplaced as a cleanup:
- Micro-optimize the asm code in secondary_startup_64_no_verify()
- Change global variables to local
- Add missing kernel-doc function parameter descriptions
- Remove unused parameter from a macro
- Remove obsolete Kconfig entry
- Fix comments
- Fix typos, mostly scripted, manually reviewed
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-cleanups-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar:
- Change global variables to local
- Add missing kernel-doc function parameter descriptions
- Remove unused parameter from a macro
- Remove obsolete Kconfig entry
- Fix comments
- Fix typos, mostly scripted, manually reviewed
and a micro-optimization got misplaced as a cleanup:
- Micro-optimize the asm code in secondary_startup_64_no_verify()
* tag 'x86-cleanups-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
arch/x86: Fix typos
x86/head_64: Use TESTB instead of TESTL in secondary_startup_64_no_verify()
x86/docs: Remove reference to syscall trampoline in PTI
x86/Kconfig: Remove obsolete config X86_32_SMP
x86/io: Remove the unused 'bw' parameter from the BUILDIO() macro
x86/mtrr: Document missing function parameters in kernel-doc
x86/setup: Make relocated_ramdisk a local variable of relocate_initrd()
* for-next/cpufeature
- Remove ARM64_HAS_NO_HW_PREFETCH copy_page() optimisation for ye olde
Thunder-X machines.
- Avoid mapping KPTI trampoline when it is not required.
- Make CPU capability API more robust during early initialisation.
* for-next/early-idreg-overrides
- Remove dependencies on core kernel helpers from the early
command-line parsing logic in preparation for moving this code
before the kernel is mapped.
* for-next/fpsimd
- Restore kernel-mode fpsimd context lazily, allowing us to run fpsimd
code sequences in the kernel with pre-emption enabled.
* for-next/kbuild
- Install 'vmlinuz.efi' when CONFIG_EFI_ZBOOT=y.
- Makefile cleanups.
* for-next/lpa2-prep
- Preparatory work for enabling the 'LPA2' extension, which will
introduce 52-bit virtual and physical addressing even with 4KiB
pages (including for KVM guests).
* for-next/misc
- Remove dead code and fix a typo.
* for-next/mm
- Pass NUMA node information for IRQ stack allocations.
* for-next/perf
- Add perf support for the Synopsys DesignWare PCIe PMU.
- Add support for event counting thresholds (FEAT_PMUv3_TH) introduced
in Armv8.8.
- Add support for i.MX8DXL SoCs to the IMX DDR PMU driver.
- Minor PMU driver fixes and optimisations.
* for-next/rip-vpipt
- Remove what support we had for the obsolete VPIPT I-cache policy.
* for-next/selftests
- Improvements to the SVE and SME selftests.
* for-next/stacktrace
- Refactor kernel unwind logic so that it can used by BPF unwinding
and, eventually, reliable backtracing.
* for-next/sysregs
- Update a bunch of register definitions based on the latest XML drop
from Arm.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"CPU features:
- Remove ARM64_HAS_NO_HW_PREFETCH copy_page() optimisation for ye
olde Thunder-X machines
- Avoid mapping KPTI trampoline when it is not required
- Make CPU capability API more robust during early initialisation
Early idreg overrides:
- Remove dependencies on core kernel helpers from the early
command-line parsing logic in preparation for moving this code
before the kernel is mapped
FPsimd:
- Restore kernel-mode fpsimd context lazily, allowing us to run
fpsimd code sequences in the kernel with pre-emption enabled
KBuild:
- Install 'vmlinuz.efi' when CONFIG_EFI_ZBOOT=y
- Makefile cleanups
LPA2 prep:
- Preparatory work for enabling the 'LPA2' extension, which will
introduce 52-bit virtual and physical addressing even with 4KiB
pages (including for KVM guests).
Misc:
- Remove dead code and fix a typo
MM:
- Pass NUMA node information for IRQ stack allocations
Perf:
- Add perf support for the Synopsys DesignWare PCIe PMU
- Add support for event counting thresholds (FEAT_PMUv3_TH)
introduced in Armv8.8
- Add support for i.MX8DXL SoCs to the IMX DDR PMU driver.
- Minor PMU driver fixes and optimisations
RIP VPIPT:
- Remove what support we had for the obsolete VPIPT I-cache policy
Selftests:
- Improvements to the SVE and SME selftests
Stacktrace:
- Refactor kernel unwind logic so that it can used by BPF unwinding
and, eventually, reliable backtracing
Sysregs:
- Update a bunch of register definitions based on the latest XML drop
from Arm"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (87 commits)
kselftest/arm64: Don't probe the current VL for unsupported vector types
efi/libstub: zboot: do not use $(shell ...) in cmd_copy_and_pad
arm64: properly install vmlinuz.efi
arm64/sysreg: Add missing system instruction definitions for FGT
arm64/sysreg: Add missing system register definitions for FGT
arm64/sysreg: Add missing ExtTrcBuff field definition to ID_AA64DFR0_EL1
arm64/sysreg: Add missing Pauth_LR field definitions to ID_AA64ISAR1_EL1
arm64: memory: remove duplicated include
arm: perf: Fix ARCH=arm build with GCC
arm64: Align boot cpucap handling with system cpucap handling
arm64: Cleanup system cpucap handling
MAINTAINERS: add maintainers for DesignWare PCIe PMU driver
drivers/perf: add DesignWare PCIe PMU driver
PCI: Move pci_clear_and_set_dword() helper to PCI header
PCI: Add Alibaba Vendor ID to linux/pci_ids.h
docs: perf: Add description for Synopsys DesignWare PCIe PMU driver
arm64: irq: set the correct node for shadow call stack
Revert "perf/arm_dmc620: Remove duplicate format attribute #defines"
arm64: fpsimd: Implement lazy restore for kernel mode FPSIMD
arm64: fpsimd: Preserve/restore kernel mode NEON at context switch
...
been disabled on the cmdline
- Clarify in detail how /proc/cpuinfo is used on x86
- Fix a theoretical overflow in num_digits()
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Merge tag 'x86_misc_for_v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- Add an informational message which gets issued when IA32 emulation
has been disabled on the cmdline
- Clarify in detail how /proc/cpuinfo is used on x86
- Fix a theoretical overflow in num_digits()
* tag 'x86_misc_for_v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ia32: State that IA32 emulation is disabled
Documentation/x86: Document what /proc/cpuinfo is for
x86/lib: Fix overflow when counting digits
Introduce the first flag for the hwprobe syscall. The flag basically
reverses its behavior, i.e. instead of populating the values of keys
for a given set of cpus, the set of cpus after the call is the result
of finding a set which supports the values of the keys. In order to
do this, we implement a pair compare function which takes the type of
value (a single value vs. a bitmask of booleans) into consideration.
We also implement vdso support for the new flag.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Link: https://lore.kernel.org/r/20231122164700.127954-9-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The "count" parameter associated with the 'cpus' parameter of the
hwprobe syscall is the size in bytes of 'cpus'. Naming it 'cpu_count'
may mislead users (it did me) to think it's the number of CPUs that
are or can be represented by 'cpus' instead. This is particularly
easy (IMO) to get wrong since 'cpus' is documented to be defined by
CPU_SET(3) and CPU_SET(3) also documents a CPU_COUNT() (the number
of CPUs in set) macro. CPU_SET(3) refers to the size of cpu sets
with 'setsize'. Adopt 'cpusetsize' for the hwprobe parameter and
specifically state it is in bytes in Documentation/riscv/hwprobe.rst
to clarify.
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231122164700.127954-7-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add documentation for TDX host kernel support. There is already one
file Documentation/x86/tdx.rst containing documentation for TDX guest
internals. Also reuse it for TDX host kernel support.
Introduce a new level menu "TDX Guest Support" and move existing
materials under it, and add a new menu for TDX host kernel support.
Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20231208170740.53979-19-dave.hansen%40intel.com
Commit
bf904d2762ee ("x86/pti/64: Remove the SYSCALL64 entry trampoline")
removed the syscall trampoline and instead opted to enable using the
default SYSCALL64 entry point by mapping the percpu TSS. Unfortunately,
the PTI documentation wasn't updated when the respective changes were
made, so bring the doc up to speed.
Signed-off-by: Nikolay Borisov <nik.borisov@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231102130204.41043-1-nik.borisov@suse.com
Updates for the hwtracing subsystem includes :
- Support for CoreSight TPDM DSB set
- Support for tuning Cycle count Threshold for CoreSight ETM via perf
- Support for TRBE on ACPI based systems
- Support for choosing buffer mode in ETR for sysfs mode
- Improvements to HiSilicon PTT driver
- Cleanups to Ultrasoc SMB driver
- Cleanup .remove callback for various Coresight platform drivers
- Remove Leo Yan from Reviewers
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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Merge tag 'coresight-next-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next
Suzuki writes:
coresight: Updates for Linux v6.8
Updates for the hwtracing subsystem includes :
- Support for CoreSight TPDM DSB set
- Support for tuning Cycle count Threshold for CoreSight ETM via perf
- Support for TRBE on ACPI based systems
- Support for choosing buffer mode in ETR for sysfs mode
- Improvements to HiSilicon PTT driver
- Cleanups to Ultrasoc SMB driver
- Cleanup .remove callback for various Coresight platform drivers
- Remove Leo Yan from Reviewers
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
* tag 'coresight-next-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (32 commits)
coresight: ultrasoc-smb: Use guards to cleanup
coresight: ultrasoc-smb: Convert to platform remove callback returning void
coresight: trbe: Convert to platform remove callback returning void
coresight: replicator: Convert to platform remove callback returning void
coresight: funnel: Convert to platform remove callback returning void
coresight: etm4x: Convert to platform remove callback returning void
coresight: dummy: Convert to platform remove callback returning void
coresight: etm4x: Fix width of CCITMIN field
coresight-tpdm: Correct the property name of MSR number
hwtracing: hisi_ptt: Optimize the trace data committing
hwtracing: hisi_ptt: Disable interrupt after trace end
Documentation: ABI: coresight-tpdm: Fix Bit[3] description indentation
coresight-tpdm: Add nodes for dsb msr support
dt-bindings: arm: Add support for DSB MSR register
coresight-tpdm: Add nodes for timestamp request
coresight-tpdm: Add nodes to configure pattern match output
coresight-tpdm: Add nodes for dsb edge control
coresight-tpdm: Add node to set dsb programming mode
coresight-tpdm: Add nodes to set trigger timestamp and type
coresight-tpdm: Add reset node to TPDM node
...
Add documentation for the new Perf event open parameters and
the threshold_max capability file.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: James Clark <james.clark@arm.com>
Link: https://lore.kernel.org/r/20231211161331.1277825-12-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This has been long overdue. Write down what x86's version of
/proc/cpuinfo is and should be used for.
With improvements by dhansen.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129101700.28482-1-bp@alien8.de
LoongArch-Vol1 has been updated to v1.10, the links in the documentation
are out of date, let's update it.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
- Fix a back-to-back signals handling scenario when shadow stack is in
use
- A documentation fix
- Add Kirill as TDX maintainer
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Merge tag 'x86_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Ignore invalid x2APIC entries in order to not waste per-CPU data
- Fix a back-to-back signals handling scenario when shadow stack is in
use
- A documentation fix
- Add Kirill as TDX maintainer
* tag 'x86_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/acpi: Ignore invalid x2APIC entries
x86/shstk: Delay signal entry SSP write until after user accesses
x86/Documentation: Indent 'note::' directive for protocol version number note
MAINTAINERS: Add Intel TDX entry
There aren't a ton of references to commits in the documentation, but
they do exist, and we can use automarkup to linkify them to make them
easier to follow.
Use something like this to find references to commits:
git grep -P 'commit.*[0-9a-f]{8,}' Documentation/
Also fix a few of these to standardize on the exact format that is
already used in changelogs.
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231027115420.205279-1-vegard.nossum@oracle.com
This work arounds errata 1490853 on Cortex-A76, and Neoverse-N1, errata
1491015 on Cortex-A77, errata 1502854 on Cortex-X1, and errata 1619801 on
Neoverse-V1, based affected cpus, where software read for TRCIDR3.CCITMIN
field in ETM gets an wrong value.
If software uses the value returned by the TRCIDR3.CCITMIN register field,
then it will limit the range which could be used for programming the ETM.
In reality, the ETM could be programmed with a much smaller value than what
is indicated by the TRCIDR3.CCITMIN field and still function correctly.
If software reads the TRCIDR3.CCITMIN register field, corresponding to the
instruction trace counting minimum threshold, observe the value 0x100 or a
minimum cycle count threshold of 256. The correct value should be 0x4 or a
minimum cycle count threshold of 4.
This work arounds the problem via storing 4 in drvdata->ccitmin on affected
systems where the TRCIDR3.CCITMIN has been 256, thus preserving cycle count
threshold granularity.
These errata information has been updated in Documentation/arch/arm64/silicon-errata.rst,
but without their corresponding configs because these have been implemented
directly in the driver.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
[ Fixed location of silicon-errata.rst in commit description ]
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230921033631.1298723-2-anshuman.khandual@arm.com
- Move the MediaTek GIC quirk handling from irqchip to core. Before the
merging window commit 44bd78dd2b88 ("irqchip/gic-v3: Disable pseudo
NMIs on MediaTek devices w/ firmware issues") temporarily addressed
this issue. Fixed now at a deeper level in the arch code.
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear.
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible.
- Remove duplicate declaration of __arm64_sys##name following the patch
to avoid prototype warning for syscalls.
- Typos in the elf_hwcap documentation.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Mostly PMU fixes and a reworking of the pseudo-NMI disabling on broken
MediaTek firmware:
- Move the MediaTek GIC quirk handling from irqchip to core. Before
the merging window commit 44bd78dd2b88 ("irqchip/gic-v3: Disable
pseudo NMIs on MediaTek devices w/ firmware issues") temporarily
addressed this issue. Fixed now at a deeper level in the arch code
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible
- Remove duplicate declaration of __arm64_sys##name following the
patch to avoid prototype warning for syscalls
- Typos in the elf_hwcap documentation"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/syscall: Remove duplicate declaration
Revert "arm64: smp: avoid NMI IPIs with broken MediaTek FW"
arm64: Move MediaTek GIC quirk handling from irqchip to core
arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers
perf: arm_cspmu: Reject events meant for other PMUs
Documentation/arm64: Fix typos in elf_hwcaps
* Support for handling misaligned accesses in S-mode.
* Probing for misaligned access support is now properly cached and
handled in parallel.
* PTDUMP now reflects the SW reserved bits, as well as the PBMT and
NAPOT extensions.
* Performance improvements for TLB flushing.
* Support for many new relocations in the module loader.
* Various bug fixes and cleanups.
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Merge tag 'riscv-for-linus-6.7-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt:
- Support for handling misaligned accesses in S-mode
- Probing for misaligned access support is now properly cached and
handled in parallel
- PTDUMP now reflects the SW reserved bits, as well as the PBMT and
NAPOT extensions
- Performance improvements for TLB flushing
- Support for many new relocations in the module loader
- Various bug fixes and cleanups
* tag 'riscv-for-linus-6.7-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits)
riscv: Optimize bitops with Zbb extension
riscv: Rearrange hwcap.h and cpufeature.h
drivers: perf: Do not broadcast to other cpus when starting a counter
drivers: perf: Check find_first_bit() return value
of: property: Add fw_devlink support for msi-parent
RISC-V: Don't fail in riscv_of_parent_hartid() for disabled HARTs
riscv: Fix set_memory_XX() and set_direct_map_XX() by splitting huge linear mappings
riscv: Don't use PGD entries for the linear mapping
RISC-V: Probe misaligned access speed in parallel
RISC-V: Remove __init on unaligned_emulation_finish()
RISC-V: Show accurate per-hart isa in /proc/cpuinfo
RISC-V: Don't rely on positional structure initialization
riscv: Add tests for riscv module loading
riscv: Add remaining module relocations
riscv: Avoid unaligned access when relocating modules
riscv: split cache ops out of dma-noncoherent.c
riscv: Improve flush_tlb_kernel_range()
riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb
riscv: Improve flush_tlb_range() for hugetlb pages
riscv: Improve tlb_flush()
...
* Support for cbo.zero in userspace.
* Support for CBOs on ACPI-based systems.
* A handful of improvements for the T-Head cache flushing ops.
* Support for software shadow call stacks.
* Various cleanups and fixes.
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Merge tag 'riscv-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Support for cbo.zero in userspace
- Support for CBOs on ACPI-based systems
- A handful of improvements for the T-Head cache flushing ops
- Support for software shadow call stacks
- Various cleanups and fixes
* tag 'riscv-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
RISC-V: hwprobe: Fix vDSO SIGSEGV
riscv: configs: defconfig: Enable configs required for RZ/Five SoC
riscv: errata: prefix T-Head mnemonics with th.
riscv: put interrupt entries into .irqentry.text
riscv: mm: Update the comment of CONFIG_PAGE_OFFSET
riscv: Using TOOLCHAIN_HAS_ZIHINTPAUSE marco replace zihintpause
riscv/mm: Fix the comment for swap pte format
RISC-V: clarify the QEMU workaround in ISA parser
riscv: correct pt_level name via pgtable_l5/4_enabled
RISC-V: Provide pgtable_l5_enabled on rv32
clocksource: timer-riscv: Increase rating of clock_event_device for Sstc
clocksource: timer-riscv: Don't enable/disable timer interrupt
lkdtm: Fix CFI_BACKWARD on RISC-V
riscv: Use separate IRQ shadow call stacks
riscv: Implement Shadow Call Stack
riscv: Move global pointer loading to a macro
riscv: Deduplicate IRQ stack switching
riscv: VMAP_STACK overflow detection thread-safe
RISC-V: cacheflush: Initialize CBO variables on ACPI systems
RISC-V: ACPI: RHCT: Add function to get CBO block sizes
...
The protocol version number note is between the protocol version table and
the memory layout section. As such, Sphinx renders the note directive not
only on the actual note, but until the end of doc.
Indent the directive so that only the actual protocol version number
note is rendered as such.
Fixes: 2c33c27fd603 ("x86/boot: Introduce kernel_info")
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231106101206.76487-2-bagasdotme@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- Add support for KVM running as a nested hypervisor under development versions
of PowerVM, using the new PAPR nested virtualisation API.
- Add support for the BPF prog pack allocator.
- A rework of the non-server MMU handling to support execute-only on all platforms.
- Some optimisations & cleanups for the powerpc qspinlock code.
- Various other small features and fixes.
Thanks to: Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin Gray,
Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam Menghani, Geert
Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley, Jordan Niethe, Julia
Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael Neuling, Minjie Du, Muhammad
Muzammil, Naveen N Rao, Nicholas Piggin, Nick Child, Nysal Jan K.A, Peter
Lafreniere, Rob Herring, Sachin Sant, Sebastian Andrzej Siewior, Shrikanth
Hegde, Srikar Dronamraju, Stanislav Kinsburskii, Vaibhav Jain, Wang Yufen, Yang
Yingliang, Yuan Tan.
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Merge tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add support for KVM running as a nested hypervisor under development
versions of PowerVM, using the new PAPR nested virtualisation API
- Add support for the BPF prog pack allocator
- A rework of the non-server MMU handling to support execute-only on
all platforms
- Some optimisations & cleanups for the powerpc qspinlock code
- Various other small features and fixes
Thanks to Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin
Gray, Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley,
Jordan Niethe, Julia Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael
Neuling, Minjie Du, Muhammad Muzammil, Naveen N Rao, Nicholas Piggin,
Nick Child, Nysal Jan K.A, Peter Lafreniere, Rob Herring, Sachin Sant,
Sebastian Andrzej Siewior, Shrikanth Hegde, Srikar Dronamraju, Stanislav
Kinsburskii, Vaibhav Jain, Wang Yufen, Yang Yingliang, and Yuan Tan.
* tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (100 commits)
powerpc/vmcore: Add MMU information to vmcoreinfo
Revert "powerpc: add `cur_cpu_spec` symbol to vmcoreinfo"
powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free]
powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data
powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack
powerpc/bpf: implement bpf_arch_text_copy
powerpc/code-patching: introduce patch_instructions()
powerpc/32s: Implement local_flush_tlb_page_psize()
powerpc/pseries: use kfree_sensitive() in plpks_gen_password()
powerpc/code-patching: Perform hwsync in __patch_instruction() in case of failure
powerpc/fsl_msi: Use device_get_match_data()
powerpc: Remove cpm_dp...() macros
powerpc/qspinlock: Rename yield_propagate_owner tunable
powerpc/qspinlock: Propagate sleepy if previous waiter is preempted
powerpc/qspinlock: don't propagate the not-sleepy state
powerpc/qspinlock: propagate owner preemptedness rather than CPU number
powerpc/qspinlock: stop queued waiters trying to set lock sleepy
powerpc/perf: Fix disabling BHRB and instruction sampling
powerpc/trace: Add support for HAVE_FUNCTION_ARG_ACCESS_API
powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh
...
- locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
- Documentation: kernel-parameters: Add earlyprintk=bios on SH
- sh: bios: Revive earlyprintk support
- sh: machvec: Remove custom ioport_{un,}map()
- sh: Remove superhyway bus support
- sh: Remove unused SH4-202 support
- sh: Remove stale microdev board
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Merge tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh updates from John Paul Adrian Glaubitz:
"While the previously announced patch series for converting arch/sh to
device trees is not yet ready for inclusion to mainline and therefore
didn't make it for this pull request, there are still a small number
changes for v6.7 which include one platform (board plus CPU and driver
code) removal plus two fixes.
The removal sent in by Arnd Bergmann concerns the microdev board which
was an early SuperH prototype board that was never used in production.
With the board removed, we were able to drop the now unused code for
the SH4-202 CPU and well as the driver code for the superhyway bus and
a custom implementation for ioport_map() and ioport_unmap() which will
allow us to simplify ioport handling in the future.
Another patch set by Geert Uytterhoeven revives SuperH BIOS
earlyprintk support which got accidentally disabled in
e76fe57447e88916 ("sh: Remove old early serial console code V2"), the
second patch in the series updates the documentation.
Finally, a patch by Masami Hiramatsu fixes a regression reported by
the kernel test robot which uncovered that arch/sh is not implementing
arch_cmpxchg_local() and therefore needs use __generic_cmpxchg_local()
instead"
* tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
Documentation: kernel-parameters: Add earlyprintk=bios on SH
sh: bios: Revive earlyprintk support
sh: machvec: Remove custom ioport_{un,}map()
sh: Remove superhyway bus support
sh: Remove unused SH4-202 support
sh: Remove stale microdev board
there are some significant changes nonetheless:
- Some more Spanish-language and Chinese translations.
- The much-discussed documentation of the confidential-computing threat
model.
- Powerpc and RISCV documentation move under Documentation/arch - these
complete this particular bit of documentation churn.
- A large traditional-Chinese documentation update.
- A new document on backporting and conflict resolution.
- Some kernel-doc and Sphinx fixes.
Plus the usual smattering of smaller updates and typo fixes.
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Merge tag 'docs-6.7' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"The number of commits for documentation is not huge this time around,
but there are some significant changes nonetheless:
- Some more Spanish-language and Chinese translations
- The much-discussed documentation of the confidential-computing
threat model
- Powerpc and RISCV documentation move under Documentation/arch -
these complete this particular bit of documentation churn
- A large traditional-Chinese documentation update
- A new document on backporting and conflict resolution
- Some kernel-doc and Sphinx fixes
Plus the usual smattering of smaller updates and typo fixes"
* tag 'docs-6.7' of git://git.lwn.net/linux: (40 commits)
scripts/kernel-doc: Fix the regex for matching -Werror flag
docs: backporting: address feedback
Documentation: driver-api: pps: Update PPS generator documentation
speakup: Document USB support
doc: blk-ioprio: Bring the doc in line with the implementation
docs: usb: fix reference to nonexistent file in UVC Gadget
docs: doc-guide: mention 'make refcheckdocs'
Documentation: fix typo in dynamic-debug howto
scripts/kernel-doc: match -Werror flag strictly
Documentation/sphinx: Remove the repeated word "the" in comments.
docs: sparse: add SPDX-License-Identifier
docs/zh_CN: Add subsystem-apis Chinese translation
docs/zh_TW: update contents for zh_TW
docs: submitting-patches: encourage direct notifications to commenters
docs: add backporting and conflict resolution document
docs: move riscv under arch
docs: update link to powerpc/vmemmap_dedup.rst
mm/memory-hotplug: fix typo in documentation
docs: move powerpc under arch
PCI: Update the devres documentation regarding to pcim_*()
...
The ia64 architecture gets its well-earned retirement as planned,
now that there is one last (mostly) working release that will
be maintained as an LTS kernel.
The architecture specific system call tables are updated for
the added map_shadow_stack() syscall and to remove references
to the long-gone sys_lookup_dcookie() syscall.
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Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull ia64 removal and asm-generic updates from Arnd Bergmann:
- The ia64 architecture gets its well-earned retirement as planned,
now that there is one last (mostly) working release that will be
maintained as an LTS kernel.
- The architecture specific system call tables are updated for the
added map_shadow_stack() syscall and to remove references to the
long-gone sys_lookup_dcookie() syscall.
* tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
hexagon: Remove unusable symbols from the ptrace.h uapi
asm-generic: Fix spelling of architecture
arch: Reserve map_shadow_stack() syscall number for all architectures
syscalls: Cleanup references to sys_lookup_dcookie()
Documentation: Drop or replace remaining mentions of IA64
lib/raid6: Drop IA64 support
Documentation: Drop IA64 from feature descriptions
kernel: Drop IA64 support from sig_fault handlers
arch: Remove Itanium (IA-64) architecture
* Major refactoring of the CPU capability detection logic resulting in
the removal of the cpus_have_const_cap() function and migrating the
code to "alternative" branches where possible
* Backtrace/kgdb: use IPIs and pseudo-NMI
* Perf and PMU:
- Add support for Ampere SoC PMUs
- Multi-DTC improvements for larger CMN configurations with multiple
Debug & Trace Controllers
- Rework the Arm CoreSight PMU driver to allow separate registration of
vendor backend modules
- Fixes: add missing MODULE_DEVICE_TABLE to the amlogic perf
driver; use device_get_match_data() in the xgene driver; fix NULL
pointer dereference in the hisi driver caused by calling
cpuhp_state_remove_instance(); use-after-free in the hisi driver
* HWCAP updates:
- FEAT_SVE_B16B16 (BFloat16)
- FEAT_LRCPC3 (release consistency model)
- FEAT_LSE128 (128-bit atomic instructions)
* SVE: remove a couple of pseudo registers from the cpufeature code.
There is logic in place already to detect mismatched SVE features
* Miscellaneous:
- Reduce the default swiotlb size (currently 64MB) if no ZONE_DMA
bouncing is needed. The buffer is still required for small kmalloc()
buffers
- Fix module PLT counting with !RANDOMIZE_BASE
- Restrict CPU_BIG_ENDIAN to LLVM IAS 15.x or newer move
synchronisation code out of the set_ptes() loop
- More compact cpufeature displaying enabled cores
- Kselftest updates for the new CPU features
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"No major architecture features this time around, just some new HWCAP
definitions, support for the Ampere SoC PMUs and a few fixes/cleanups.
The bulk of the changes is reworking of the CPU capability checking
code (cpus_have_cap() etc).
- Major refactoring of the CPU capability detection logic resulting
in the removal of the cpus_have_const_cap() function and migrating
the code to "alternative" branches where possible
- Backtrace/kgdb: use IPIs and pseudo-NMI
- Perf and PMU:
- Add support for Ampere SoC PMUs
- Multi-DTC improvements for larger CMN configurations with
multiple Debug & Trace Controllers
- Rework the Arm CoreSight PMU driver to allow separate
registration of vendor backend modules
- Fixes: add missing MODULE_DEVICE_TABLE to the amlogic perf
driver; use device_get_match_data() in the xgene driver; fix
NULL pointer dereference in the hisi driver caused by calling
cpuhp_state_remove_instance(); use-after-free in the hisi driver
- HWCAP updates:
- FEAT_SVE_B16B16 (BFloat16)
- FEAT_LRCPC3 (release consistency model)
- FEAT_LSE128 (128-bit atomic instructions)
- SVE: remove a couple of pseudo registers from the cpufeature code.
There is logic in place already to detect mismatched SVE features
- Miscellaneous:
- Reduce the default swiotlb size (currently 64MB) if no ZONE_DMA
bouncing is needed. The buffer is still required for small
kmalloc() buffers
- Fix module PLT counting with !RANDOMIZE_BASE
- Restrict CPU_BIG_ENDIAN to LLVM IAS 15.x or newer move
synchronisation code out of the set_ptes() loop
- More compact cpufeature displaying enabled cores
- Kselftest updates for the new CPU features"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (83 commits)
arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer
arm64: module: Fix PLT counting when CONFIG_RANDOMIZE_BASE=n
arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into a helper
perf: hisi: Fix use-after-free when register pmu fails
drivers/perf: hisi_pcie: Initialize event->cpu only on success
drivers/perf: hisi_pcie: Check the type first in pmu::event_init()
arm64: cpufeature: Change DBM to display enabled cores
arm64: cpufeature: Display the set of cores with a feature
perf/arm-cmn: Enable per-DTC counter allocation
perf/arm-cmn: Rework DTC counters (again)
perf/arm-cmn: Fix DTC domain detection
drivers: perf: arm_pmuv3: Drop some unused arguments from armv8_pmu_init()
drivers: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally
drivers/perf: hisi: use cpuhp_state_remove_instance_nocalls() for hisi_hns3_pmu uninit process
clocksource/drivers/arm_arch_timer: limit XGene-1 workaround
arm64: Remove system_uses_lse_atomics()
arm64: Mark the 'addr' argument to set_ptes() and __set_pte_at() as unused
drivers/perf: xgene: Use device_get_match_data()
perf/amlogic: add missing MODULE_DEVICE_TABLE
arm64/mm: Hoist synchronization out of set_ptes() loop
...
Highlights:
- asus-wmi: Support for screenpad and solve brightness key
press duplication
- int3472: Eliminate the last use of deprecated GPIO functions
- mlxbf-pmc: New HW support
- msi-ec: Support new EC configurations
- thinkpad_acpi: Support reading aux MAC address during passthrough
- wmi: Fixes & improvements
- x86-android-tablets: Detection fix and avoid use of GPIO private APIs
- Debug & metrics interface improvements
- Miscellaneous cleanups / fixes / improvements
The following is an automated shortlog grouped by driver:
acer-wmi:
- Remove void function return
amd/hsmp:
- add support for metrics tbl
- create plat specific struct
- Fix iomem handling
- improve the error log
amd/pmc:
- Add dump_custom_stb module parameter
- Add PMFW command id to support S2D force flush
- Handle overflow cases where the num_samples range is higher
- Use flex array when calling amd_pmc_stb_debugfs_open_v2()
asus-wireless:
- Replace open coded acpi_match_acpi_device()
asus-wmi:
- add support for ASUS screenpad
- Do not report brightness up/down keys when also reported by acpi_video
gpiolib: acpi:
- Add a ignore interrupt quirk for Peaq C1010
- Check if a GPIO is listed in ignore_interrupt earlier
hp-bioscfg:
- Annotate struct bios_args with __counted_by
inspur-platform-profile:
- Add platform profile support
int3472:
- Add new skl_int3472_fill_gpiod_lookup() helper
- Add new skl_int3472_gpiod_get_from_temp_lookup() helper
- Stop using gpiod_toggle_active_low()
- Switch to devm_get_gpiod()
intel: bytcrc_pwrsrc:
- Convert to platform remove callback returning void
intel/ifs:
- Add new CPU support
- Add new error code
- ARRAY BIST for Sierra Forest
- Gen2 scan image loading
- Gen2 Scan test support
- Metadata validation for start_chunk
- Refactor image loading code
- Store IFS generation number
- Validate image size
intel_speed_select_if:
- Remove hardcoded map size
- Use devm_ioremap_resource
intel/tpmi:
- Add debugfs support for read/write blocked
- Add defines to get version information
intel-uncore-freq:
- Ignore minor version change
ISST:
- Allow level 0 to be not present
- Ignore minor version change
- Use fuse enabled mask instead of allowed levels
mellanox:
- Fix misspelling error in routine name
- Rename some init()/exit() functions for consistent naming
mlxbf-bootctl:
- Convert to platform remove callback returning void
mlxbf-pmc:
- Add support for BlueField-3
mlxbf-tmfifo:
- Convert to platform remove callback returning void
mlx-Convert to platform remove callback returning void:
- mlx-Convert to platform remove callback returning void
mlxreg-hotplug:
- Convert to platform remove callback returning void
mlxreg-io:
- Convert to platform remove callback returning void
mlxreg-lc:
- Convert to platform remove callback returning void
msi-ec:
- Add more EC configs
- rename fn_super_swap
nvsw-sn2201:
- Convert to platform remove callback returning void
sel3350-Convert to platform remove callback returning void:
- sel3350-Convert to platform remove callback returning void
siemens: simatic-ipc-batt-apollolake:
- Convert to platform remove callback returning void
siemens: simatic-ipc-batt:
- Convert to platform remove callback returning void
siemens: simatic-ipc-batt-elkhartlake:
- Convert to platform remove callback returning void
siemens: simatic-ipc-batt-f7188x:
- Convert to platform remove callback returning void
siemens: simatic-ipc-batt:
- Simplify simatic_ipc_batt_remove()
surface: acpi-notify:
- Convert to platform remove callback returning void
surface: aggregator:
- Annotate struct ssam_event with __counted_by
surface: aggregator-cdev:
- Convert to platform remove callback returning void
surface: aggregator-registry:
- Convert to platform remove callback returning void
surface: dtx:
- Convert to platform remove callback returning void
surface: gpe:
- Convert to platform remove callback returning void
surface: hotplug:
- Convert to platform remove callback returning void
surface: surface3-wmi:
- Convert to platform remove callback returning void
think-lmi:
- Add bulk save feature
- Replace kstrdup() + strreplace() with kstrdup_and_replace()
- Use strreplace() to replace a character by nul
thinkpad_acpi:
- Add battery quirk for Thinkpad X120e
- replace deprecated strncpy with memcpy
- sysfs interface to auxmac
tools/power/x86/intel-speed-select:
- Display error for core-power support
- Increase max CPUs in one request
- No TRL for non compute domains
- Sanitize integer arguments
- turbo-mode enable disable swapped
- Update help for TRL
- Use cgroup isolate for CPU 0
- v1.18 release
wmi:
- Decouple probe deferring from wmi_block_list
- Decouple WMI device removal from wmi_block_list
- Fix opening of char device
- Fix probe failure when failing to register WMI devices
- Fix refcounting of WMI devices in legacy functions
x86-android-tablets:
- Add a comment about x86_android_tablet_get_gpiod()
- Create a platform_device from module_init()
- Drop "linux,power-supply-name" from lenovo_yt3_bq25892_0_props[]
- Fix Lenovo Yoga Tablet 2 830F/L vs 1050F/L detection
- Remove invalid_aei_gpiochip from Peaq C1010
- Remove invalid_aei_gpiochip support
- Stop using gpiolib private APIs
- Use platform-device as gpio-keys parent
xo15-ebook:
- Replace open coded acpi_match_acpi_device()
Merges:
- Merge branch 'pdx86/platform-drivers-x86-int3472' into review-ilpo
- Merge branch 'pdx86/platform-drivers-x86-mellanox-init' into review-ilpo
- Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-ilpo
- Merge remote-tracking branch 'pdx86/platform-drivers-x86-android-tablets' into review-hans
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Merge tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- asus-wmi: Support for screenpad and solve brightness key press
duplication
- int3472: Eliminate the last use of deprecated GPIO functions
- mlxbf-pmc: New HW support
- msi-ec: Support new EC configurations
- thinkpad_acpi: Support reading aux MAC address during passthrough
- wmi: Fixes & improvements
- x86-android-tablets: Detection fix and avoid use of GPIO private APIs
- Debug & metrics interface improvements
- Miscellaneous cleanups / fixes / improvements
* tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits)
platform/x86: inspur-platform-profile: Add platform profile support
platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
platform/x86: wmi: Decouple WMI device removal from wmi_block_list
platform/x86: wmi: Fix opening of char device
platform/x86: wmi: Fix probe failure when failing to register WMI devices
platform/x86: wmi: Fix refcounting of WMI devices in legacy functions
platform/x86: wmi: Decouple probe deferring from wmi_block_list
platform/x86/amd/hsmp: Fix iomem handling
platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video
platform/x86: thinkpad_acpi: replace deprecated strncpy with memcpy
tools/power/x86/intel-speed-select: v1.18 release
tools/power/x86/intel-speed-select: Use cgroup isolate for CPU 0
tools/power/x86/intel-speed-select: Increase max CPUs in one request
tools/power/x86/intel-speed-select: Display error for core-power support
tools/power/x86/intel-speed-select: No TRL for non compute domains
tools/power/x86/intel-speed-select: turbo-mode enable disable swapped
tools/power/x86/intel-speed-select: Update help for TRL
tools/power/x86/intel-speed-select: Sanitize integer arguments
platform/x86: acer-wmi: Remove void function return
platform/x86/amd/pmc: Add dump_custom_stb module parameter
...
Pawan Gupta
Easwar Hariharan
Linus Torvalds
Robin Murphy
Rob Herring
Vegard Nossum
Palmer Dabbelt
Clément Léger
Will Deacon
Andrew Jones
Kai Huang
Nikolay Borisov
Greg Kroah-Hartman
James Clark
Borislav Petkov (AMD)
Tsung-Han Lin
Yanteng Si
Anshuman Khandual
Marielle Novastrider
Bagas Sanjaya