kernel/linux.git/tools/arch/x86/include, branch v7.2-rc6

tools headers: Sync KVM headers with the kernel sources

2026-07-22T00:00:10+00:00

To pick up the changes in: 103ff3a50e3a50a9 ("KVM: s390: Add capability to support 2G hugepages") 229132c309d667bb ("LoongArch: KVM: Add DMSINTC device support") 2619da73bb2f10d8 ("KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs") 4aebd7d5c72f805e ("KVM: s390: Add KVM capability for ESA mode guests") 4f256d5770febb9d ("KVM: x86: nSVM: Save/restore gPAT with KVM_{GET,SET}_NESTED_STATE") 822790ab01495d67 ("KVM: x86: Define KVM_X86_QUIRK_NESTED_SVM_SHARED_PAT") 8800dbf6614aad10 ("KVM: arm64: Allow userspace to create protected VMs when pKVM is enabled") bf8f3cec939db68e ("KVM: s390: vsie: Refactor handle_stfle") c547c51ff4d44c78 ("KVM: arm64: gic-v5: Add ARM_VGIC_V5 device to KVM headers") d7507a94a0720223 ("KVM: SVM: Treat exit_code as an unsigned 64-bit value through all of KVM") This addresses these perf build warnings: Warning: Kernel ABI header differences: diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h diff -u tools/arch/x86/include/uapi/asm/svm.h arch/x86/include/uapi/asm/svm.h diff -u tools/arch/s390/include/uapi/asm/kvm.h arch/s390/include/uapi/asm/kvm.h Please see tools/include/uapi/README for further details. Signed-off-by: Arnaldo Carvalho de Melo

tools arch x86: Sync the msr-index.h copy with the kernel sources

2026-07-22T00:00:09+00:00

To pick up the changes in: e93a93f11490992a ("KVM: x86: Virtualize AMD CPUID faulting") That introduce these new entries in the string tables: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before.txt $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after.txt $ diff -u before.txt after.txt @@ -349,6 +349,7 @@ [0xc00102b2 - x86_AMD_V_KVM_MSRs_offset] = "AMD_CPPC_CAP2", [0xc00102b3 - x86_AMD_V_KVM_MSRs_offset] = "AMD_CPPC_REQ", [0xc00102b4 - x86_AMD_V_KVM_MSRs_offset] = "AMD_CPPC_STATUS", + [0xc00102b5 - x86_AMD_V_KVM_MSRs_offset] = "AMD_CPPC_REQ2", [0xc00102f0 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN_CTL", [0xc00102f1 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN", [0xc0010300 - x86_AMD_V_KVM_MSRs_offset] = "AMD_SAMP_BR_FROM", This addresses this perf build warning: Warning: Kernel ABI header differences: diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Please see tools/include/uapi/README for further details. Cc: Jim Mattson Signed-off-by: Arnaldo Carvalho de Melo

tools headers x86 cpufeatures: Sync with the kernel sources

2026-07-22T00:00:09+00:00

To pick up the changes in: 5ce9cc5a232b9928 ("coco/tdx-host: Don't expose P-SEAMLDR information on CPUs with erratum") 7658b9343a8f65e5 ("KVM: SVM: add GMET bit definitions") de0bfdc7137d5132 ("KVM: x86: Advertise AVX512 Bit Matrix Multiply (BMM) to userspace") That just rebuilds perf, silencing this build warning. This addresses this perf build warning: Warning: Kernel ABI header differences: diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Please see tools/include/uapi/README for further details. Cc: Chao Gao Cc: Nikunj A Dadhania Cc: Paolo Bonzini Signed-off-by: Arnaldo Carvalho de Melo

perf tool ibs: Sync AMD IBS header file

2026-05-23T00:31:02+00:00

IBS_OP_DATA2 register will have two more fields: strm_st and rmt_socket in Zen6 and future AMD platforms. Kernel header file is already updated. Add those fields in tools copy as well. Signed-off-by: Ravi Bangoria Acked-by: Namhyung Kim Cc: Ananth Narayan Cc: Dapeng Mi Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Manali Shukla Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Signed-off-by: Arnaldo Carvalho de Melo

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

2026-05-12T03:06:36+00:00

Make sure resources are not improperly shared in the op cache and cause instruction corruption this way. Signed-off-by: Prathyushi Nangia Co-developed-by: Borislav Petkov (AMD) Signed-off-by: Borislav Petkov (AMD) Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds

Merge tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-04-14T20:22:40+00:00

Pull performance events updates from Ingo Molnar: "Core updates: - Try to allocate task_ctx_data quickly, to optimize O(N^2) algorithm on large systems with O(100k) threads (Namhyung Kim) AMD PMU driver IBS support updates and fixes, by Ravi Bangoria: - Fix interrupt accounting for discarded samples - Fix a Zen5-specific quirk - Fix PhyAddrVal handling - Fix NMI-safety with perf_allow_kernel() - Fix a race between event add and NMIs Intel PMU driver updates: - Only check GP counters for PEBS constraints validation (Dapeng Mi) MSR driver: - Turn SMI_COUNT and PPERF on by default, instead of a long list of CPU models to enable them on (Kan Liang) ... and misc cleanups and fixes by Aldf Conte, Anshuman Khandual, Namhyung Kim, Ravi Bangoria and Yen-Hsiang Hsu" * tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/events: Replace READ_ONCE() with standard pgtable accessors perf/x86/msr: Make SMI and PPERF on by default perf/x86/intel/p4: Fix unused variable warning in p4_pmu_init() perf/x86/intel: Only check GP counters for PEBS constraints validation perf/x86/amd/ibs: Fix comment typo in ibs_op_data perf/amd/ibs: Advertise remote socket capability perf/amd/ibs: Enable streaming store filter perf/amd/ibs: Enable RIP bit63 hardware filtering perf/amd/ibs: Enable fetch latency filtering perf/amd/ibs: Support IBS_{FETCH|OP}_CTL2[Dis] to eliminate RMW race perf/amd/ibs: Add new MSRs and CPUID bits definitions perf/amd/ibs: Define macro for ldlat mask and shift perf/amd/ibs: Avoid race between event add and NMI perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler perf/amd/ibs: Preserve PhyAddrVal bit when clearing PhyAddr MSR perf/amd/ibs: Limit ldlat->l3missonly dependency to Zen5 perf/amd/ibs: Account interrupt for discarded samples perf/core: Simplify __detach_global_ctx_data() perf/core: Try to allocate task_ctx_data quickly perf/core: Pass GFP flags to attach_task_ctx_data()

Merge tag 'objtool-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-04-14T20:00:04+00:00

Pull objtool updates from Ingo Molnar: - KLP support updates and fixes (Song Liu) - KLP-build script updates and fixes (Joe Lawrence) - Support Clang RAX DRAP sequence, to address clang false positive (Josh Poimboeuf) - Reorder ORC register numbering to match regular x86 register numbering (Josh Poimboeuf) - Misc cleanups (Wentong Tian, Song Liu) * tag 'objtool-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool/x86: Reorder ORC register numbering objtool: Support Clang RAX DRAP sequence livepatch/klp-build: report patch validation fuzz livepatch/klp-build: add terminal color output livepatch/klp-build: provide friendlier error messages livepatch/klp-build: improve short-circuit validation livepatch/klp-build: fix shellcheck complaints livepatch/klp-build: add Makefile with check target livepatch/klp-build: add grep-override function livepatch/klp-build: switch to GNU patch and recountdiff livepatch/klp-build: support patches that add/remove files objtool/klp: Correlate locals to globals objtool/klp: Match symbols based on demangled_name for global variables objtool/klp: Remove .llvm suffix in demangle_name() objtool/klp: Also demangle global objects objtool/klp: Use sym->demangled_name for symbol_name hash objtool/klp: Remove trailing '_' in demangle_name() objtool/klp: Remove redundant strcmp() in correlate_symbols() objtool: Use section/symbol type helpers

Merge tag 'amd-pstate-v7.1-2026-04-02' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux

2026-04-04T18:55:56+00:00

Pull amd-pstate new content for 7.1 (2026-04-02) from Mario Limonciello: "Add support for new features: * CPPC performance priority * Dynamic EPP * Raw EPP * New unit tests for new features Fixes for: * PREEMPT_RT * sysfs files being present when HW missing * Broken/outdated documentation" * tag 'amd-pstate-v7.1-2026-04-02' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: (22 commits) MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes amd-pstate-ut: Add module parameter to select testcases amd-pstate: Introduce a tracepoint trace_amd_pstate_cppc_req2() amd-pstate: Add sysfs support for floor_freq and floor_count amd-pstate: Add support for CPPC_REQ2 and FLOOR_PERF x86/cpufeatures: Add AMD CPPC Performance Priority feature. amd-pstate: Make certain freq_attrs conditionally visible ...

x86/cpufeatures: Add AMD CPPC Performance Priority feature.

2026-04-02T16:28:21+00:00

Some future AMD processors have feature named "CPPC Performance Priority" which lets userspace specify different floor performance levels for different CPUs. The platform firmware takes these different floor performance levels into consideration while throttling the CPUs under power/thermal constraints. The presence of this feature is indicated by bit 16 of the EDX register for CPUID leaf 0x80000007. More details can be found in AMD Publication titled "AMD64 Collaborative Processor Performance Control (CPPC) Performance Priority" Revision 1.10. Define a new feature bit named X86_FEATURE_CPPC_PERF_PRIO to map to CPUID 0x80000007.EDX[16]. Reviewed-by: Borislav Petkov (AMD) Signed-off-by: Gautham R. Shenoy Signed-off-by: Mario Limonciello (AMD)

tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources

2026-03-22T21:31:54+00:00

To pick the changes in: e2ffe85b6d2bb778 ("KVM: x86: Introduce KVM_X86_QUIRK_VMCS12_ALLOW_FREEZE_IN_SMM") That just rebuilds kvm-stat.c on x86, no change in functionality. This silences these perf build warning: Warning: Kernel ABI header differences: diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Please see tools/include/uapi/README for further details. Cc: Jim Mattson Cc: Paolo Bonzini Signed-off-by: Arnaldo Carvalho de Melo