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2024-02-19x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static keyPawan Gupta
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
2024-02-15arm64: Subscribe Microsoft Azure Cobalt 100 to ARM Neoverse N2 errataEaswar Hariharan
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>
2024-01-19Merge tag 'arm64-fixes' of ↵Linus Torvalds
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>
2024-01-18Merge tag 'x86_tdx_for_6.8' of ↵Linus Torvalds
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 ...
2024-01-18arm64: Fix silcon-errata.rst formattingRobin Murphy
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>
2024-01-17Merge tag 'char-misc-6.8-rc1' of ↵Linus Torvalds
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 ...
2024-01-17Merge tag 'docs-6.8-2' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation fixes from Jonathan Corbet: "A handful of late-arriving documentation fixes" * tag 'docs-6.8-2' of git://git.lwn.net/linux: docs, kprobes: Add loongarch as supported architecture docs, kprobes: Update email address of Masami Hiramatsu docs: admin-guide: hw_random: update rng-tools website Documentation/core-api: fix spelling mistake in workqueue docs: kernel_feat.py: fix potential command injection Documentation: constrain alabaster package to older versions
2024-01-17Merge tag 'riscv-for-linus-6.8-mw1' of ↵Linus Torvalds
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 ...
2024-01-12arm64: errata: Add Cortex-A510 speculative unprivileged load workaroundRob Herring
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>
2024-01-11Merge tag 'docs-6.8' of git://git.lwn.net/linuxLinus Torvalds
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 ..
2024-01-11docs: kernel_feat.py: fix potential command injectionVegard Nossum
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
2024-01-09Merge patch series "riscv: hwprobe: add Zicond, Zacas and Ztso support"Palmer Dabbelt
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>
2024-01-09riscv: hwprobe: export Zicond extensionClément Léger
Export the zicond extension to userspace using hwprobe. Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231220155723.684081-7-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-09riscv: hwprobe: export Zacas ISA extensionClément Léger
Export Zacas ISA extension through hwprobe. Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231220155723.684081-6-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-09riscv: hwprobe: export Ztso ISA extensionClément Léger
Export the Ztso extension to userspace. Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231220155723.684081-3-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-09Merge patch series "RISC-V: hwprobe: Introduce which-cpus"Palmer Dabbelt
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>
2024-01-08Merge tag 'x86-cleanups-2024-01-08' of ↵Linus Torvalds
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()
2024-01-08Merge tag 'arm64-upstream' of ↵Linus Torvalds
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 ...
2024-01-08Merge tag 'x86_misc_for_v6.8' of ↵Linus Torvalds
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
2024-01-04Merge branch 'for-next/perf' into for-next/coreWill Deacon
* for-next/perf: (30 commits) arm: perf: Fix ARCH=arm build with GCC 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 Revert "perf/arm_dmc620: Remove duplicate format attribute #defines" Documentation: arm64: Document the PMU event counting threshold feature arm64: perf: Add support for event counting threshold arm: pmu: Move error message and -EOPNOTSUPP to individual PMUs KVM: selftests: aarch64: Update tools copy of arm_pmuv3.h perf/arm_dmc620: Remove duplicate format attribute #defines arm: pmu: Share user ABI format mechanism with SPE arm64: perf: Include threshold control fields in PMEVTYPER mask arm: perf: Convert remaining fields to use GENMASK arm: perf: Use GENMASK for PMMIR fields arm: perf/kvm: Use GENMASK for ARMV8_PMU_PMCR_N arm: perf: Remove inlines from arm_pmuv3.c drivers/perf: arm_dsu_pmu: Remove kerneldoc-style comment syntax drivers/perf: Remove usage of the deprecated ida_simple_xx() API ...
2024-01-03RISC-V: hwprobe: Introduce which-cpus flagAndrew Jones
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>
2024-01-03RISC-V: hwprobe: Clarify cpus size parameterAndrew Jones
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>
2023-12-12riscv: hwprobe: export Zfa ISA extensionClément Léger
Export Zfa ISA extension[1] through hwprobe. Link: https://drive.google.com/file/d/1VT6QIggpb59-8QRV266dEE4T8FZTxGq4/view [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-20-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: export Zvfh[min] ISA extensionsClément Léger
Export Zvfh[min] ISA extension[1] through hwprobe. Link: https://drive.google.com/file/d/1_Yt60HGAf1r1hx7JnsIptw0sqkBd9BQ8/view [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-17-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: export Zhintntl ISA extensionClément Léger
Export Zihintntl extension[1] through hwprobe. Link: https://drive.google.com/file/d/13_wsN8YmRfH8YWysFyTX-DjTkCnBd9hj/view [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-14-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: export Zfh[min] ISA extensionsClément Léger
Export Zfh[min] ISA extensions[1] through hwprobe only if FPU support is available. Link: https://drive.google.com/file/d/1z3tQQLm5ALsAD77PM0l0CHnapxWCeVzP/view [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-11-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: export vector crypto ISA extensionsClément Léger
Export Zv* vector crypto ISA extensions that were added in "RISC-V Cryptography Extensions Volume II" specification[1] through hwprobe. This adds support for the following instructions: - Zvbb: Vector Basic Bit-manipulation - Zvbc: Vector Carryless Multiplication - Zvkb: Vector Cryptography Bit-manipulation - Zvkg: Vector GCM/GMAC. - Zvkned: NIST Suite: Vector AES Block Cipher - Zvknh[ab]: NIST Suite: Vector SHA-2 Secure Hash - Zvksed: ShangMi Suite: SM4 Block Cipher - Zvksh: ShangMi Suite: SM3 Secure Hash - Zvknc: NIST Algorithm Suite with carryless multiply - Zvkng: NIST Algorithm Suite with GCM. - Zvksc: ShangMi Algorithm Suite with carryless multiplication - Zvksg: ShangMi Algorithm Suite with GCM. - Zvkt: Vector Data-Independent Execution Latency. Zvkn and Zvks are ommited since they are a superset of other extensions. Link: https://drive.google.com/file/d/1gb9OLH-DhbCgWp7VwpPOVrrY6f3oSJLL/view [1] Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-8-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: add support for scalar crypto ISA extensionsClément Léger
Export the following scalar crypto extensions through hwprobe: - Zbkb - Zbkc - Zbkx - Zknd - Zkne - Zknh - Zksed - Zksh - Zkt Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-5-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12riscv: hwprobe: export missing Zbc ISA extensionClément Léger
While Zba and Zbb were exported through hwprobe, Zbc was not. Export it. Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231114141256.126749-3-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-12-12Documentation/x86: Add documentation for TDX host supportKai Huang
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
2023-12-12x86/docs: Remove reference to syscall trampoline in PTINikolay Borisov
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
2023-12-12Merge tag 'coresight-next-v6.8' of ↵Greg Kroah-Hartman
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 ...
2023-12-12Documentation: arm64: Document the PMU event counting threshold featureJames Clark
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>
2023-12-09Documentation/x86: Document what /proc/cpuinfo is forBorislav Petkov (AMD)
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
2023-12-05Documentation/arch/arm64: Fix typoTsung-Han Lin
Should be 'if' here. Signed-off-by: Tsung-Han Lin <tsunghan.tw@gmail.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20231203011804.27694-1-tsunghan.tw@gmail.com Signed-off-by: Will Deacon <will@kernel.org>
2023-11-21Docs/LoongArch: Update links in LoongArch introduction.rstYanteng Si
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>
2023-11-19Merge tag 'x86_urgent_for_v6.7_rc2' of ↵Linus Torvalds
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
2023-11-17docs: automarkup: linkify git revsVegard Nossum
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
2023-11-16coresight: etm: Override TRCIDR3.CCITMIN on errata affected cpusAnshuman Khandual
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
2023-11-10Merge tag 'arm64-fixes' of ↵Linus Torvalds
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
2023-11-10Merge tag 'riscv-for-linus-6.7-mw2' of ↵Linus Torvalds
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() ...
2023-11-08Merge tag 'riscv-for-linus-6.7-rc1' of ↵Linus Torvalds
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 ...
2023-11-07Documentation/arm64: Fix typos in elf_hwcapsMarielle Novastrider
Small typos in register and field names. Signed-off-by: Marielle Novastrider <marielle@novastrider.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20231031200838.55569-1-marielle@novastrider.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2023-11-06x86/Documentation: Indent 'note::' directive for protocol version number noteBagas Sanjaya
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>
2023-11-03Merge tag 'powerpc-6.7-1' of ↵Linus Torvalds
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 ...
2023-11-02Merge tag 'sh-for-v6.7-tag1' of ↵Linus Torvalds
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
2023-11-01Merge tag 'docs-6.7' of git://git.lwn.net/linuxLinus Torvalds
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_*() ...
2023-11-01Merge tag 'asm-generic-6.7' of ↵Linus Torvalds
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
2023-11-01Merge tag 'arm64-upstream' of ↵Linus Torvalds
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 ...
2023-10-31Merge tag 'platform-drivers-x86-v6.7-1' of ↵Linus Torvalds
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 ...
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