kernel/linux.git/tools/arch/x86/include, branch v6.12.93

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

2026-05-14T13:29:29+00:00

commit c21b90f77687075115d989e53a8ec5e2bb427ab1 upstream. 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: Greg Kroah-Hartman

x86/rdrand: Disable RDSEED on AMD Cyan Skillfish

2025-07-17T16:37:14+00:00

commit 5b937a1ed64ebeba8876e398110a5790ad77407c upstream. AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an error that causes RDSEED to always return 0xffffffff, while RDRAND works correctly. Mask the RDSEED cap for this CPU so that both /proc/cpuinfo and direct CPUID read report RDSEED as unavailable. [ bp: Move to amd.c, massage. ] Signed-off-by: Mikhail Paulyshka Signed-off-by: Borislav Petkov (AMD) Cc: Link: https://lore.kernel.org/20250524145319.209075-1-me@mixaill.net Signed-off-by: Greg Kroah-Hartman

perf cap: Add __NR_capget to arch/x86 unistd

2024-10-28T16:04:52+00:00

As there are duplicated kernel headers in tools/include libc can pick up the wrong definitions. This was causing the wrong system call for capget in perf. Reported-by: Adrian Hunter Fixes: e25ebda78e230283 ("perf cap: Tidy up and improve capability testing") Closes: https://lore.kernel.org/lkml/cc7d6bdf-1aeb-4179-9029-4baf50b59342@intel.com/ Signed-off-by: Ian Rogers Tested-by: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20241026055448.312247-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

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

2024-10-24T13:27:59+00:00

To pick up the changes from these csets: dc1e67f70f6d4e33 ("KVM VMX: Move MSR_IA32_VMX_MISC bit defines to asm/vmx.h") d7bfc9ffd58037ff ("KVM: VMX: Move MSR_IA32_VMX_BASIC bit defines to asm/vmx.h") beb2e446046f8dd9 ("x86/cpu: KVM: Move macro to encode PAT value to common header") e7e80b66fb242a63 ("x86/cpu: KVM: Add common defines for architectural memory types (PAT, MTRRs, etc.)") That cause no changes to tooling: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before $ 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 $ diff -u before after $ To see how this works take a look at this previous update: https://git.kernel.org/torvalds/c/174372668933ede5 174372668933ede5 ("tools arch x86: Sync the msr-index.h copy with the kernel sources to pick IA32_MKTME_KEYID_PARTITIONING") Just silences 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: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Cc: Sean Christopherson Cc: Xin Li Link: https://lore.kernel.org/lkml/ZxpLSBzGin3vjs3b@x1 Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync kvm headers with the kernel sources

2024-10-23T14:34:56+00:00

To pick the changes in: aa8d1f48d353b046 ("KVM: x86/mmu: Introduce a quirk to control memslot zap behavior") That don't change functionality in tools/perf, as no new ioctl is added for the 'perf trace' scripts to harvest. This addresses these perf build warnings: 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: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Cc: Paolo Bonzini Cc: Yan Zhao Link: https://lore.kernel.org/lkml/ZxgN0O02YrAJ2qIC@x1 Signed-off-by: Arnaldo Carvalho de Melo

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

2024-09-30T20:23:38+00:00

To pick up the changes from these csets: 0a3e4e94d137daac ("platform/x86/intel/ifs: Add SBAF test image loading support") That cause no changes to tooling: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before $ 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 $ diff -u before after $ Just silences 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 Cc: Adrian Hunter Cc: Hans de Goede Cc: Ian Rogers Cc: Jiri Olsa Cc: Jithu Joseph Cc: Kan Liang Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/ZvrJY68Btx3a_yV4@x1 Signed-off-by: Arnaldo Carvalho de Melo

tools/include: Sync x86 headers with the kernel sources

2024-08-07T17:59:07+00:00

To pick up changes from: 149fd4712bcd perf/x86/intel: Support Perfmon MSRs aliasing 21b362cc762a x86/resctrl: Enable shared RMID mode on Sub-NUMA Cluster (SNC) systems 4f460bff7b6a cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h 7ea81936b853 x86/cpufeatures: Add HWP highest perf change feature flag 78ce84b9e0a5 x86/cpufeatures: Flip the /proc/cpuinfo appearance logic 1beb348d5c7f x86/sev: Provide SVSM discovery support This should be used to beautify x86 syscall arguments and it addresses these tools/perf build warnings: Warning: Kernel ABI header differences: diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Please see tools/include/uapi/README for details (it's in the first patch of this series). Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: x86@kernel.org Signed-off-by: Namhyung Kim

tools/include: Sync uapi/linux/kvm.h with the kernel sources

2024-08-06T19:30:32+00:00

And other arch-specific UAPI headers to pick up changes from: 4b23e0c199b2 KVM: Ensure new code that references immediate_exit gets extra scrutiny 85542adb65ec KVM: x86: Add KVM_RUN_X86_GUEST_MODE kvm_run flag 6fef518594bc KVM: x86: Add a capability to configure bus frequency for APIC timer 34ff65901735 x86/sev: Use kernel provided SVSM Calling Areas 5dcc1e76144f Merge tag 'kvm-x86-misc-6.11' of https://github.com/kvm-x86/linux into HEAD 9a0d2f4995dd KVM: PPC: Book3S HV: Add one-reg interface for HASHPKEYR register e9eb790b2557 KVM: PPC: Book3S HV: Add one-reg interface for HASHKEYR register 1a1e6865f516 KVM: PPC: Book3S HV: Add one-reg interface for DEXCR register This should be used to beautify KVM syscall arguments and it addresses these tools/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/powerpc/include/uapi/asm/kvm.h arch/powerpc/include/uapi/asm/kvm.h Please see tools/include/uapi/README for details (it's in the first patch of this series). Cc: Paolo Bonzini Cc: kvm@vger.kernel.org Signed-off-by: Namhyung Kim

tools headers UAPI: Sync kvm headers with the kernel sources

2024-05-28T19:49:36+00:00

To pick the changes in: 4af663c2f64a8d25 ("KVM: SEV: Allow per-guest configuration of GHCB protocol version") 4f5defae708992dd ("KVM: SEV: introduce KVM_SEV_INIT2 operation") 26c44aa9e076ed83 ("KVM: SEV: define VM types for SEV and SEV-ES") ac5c48027bacb1b5 ("KVM: SEV: publish supported VMSA features") 651d61bc8b7d8bb6 ("KVM: PPC: Fix documentation for ppc mmu caps") That don't change functionality in tools/perf, as no new ioctl is added for the 'perf trace' scripts to harvest. 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 Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Joel Stanley Cc: Michael Ellerman Cc: Michael Roth Cc: Namhyung Kim Cc: Paolo Bonzini Link: https://lore.kernel.org/lkml/ZlYxAdHjyAkvGtMW@x1 Signed-off-by: Arnaldo Carvalho de Melo

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

2024-05-28T18:14:32+00:00

To pick up the changes from these csets: 53bc516ade85a764 ("x86/msr: Move ARCH_CAP_XAPIC_DISABLE bit definition to its rightful place") That patch just move definitions around, so this just silences 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. Cc: Adrian Hunter Cc: Borislav Petkov (AMD) Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Cc: Pawan Gupta Link: https://lore.kernel.org/lkml/ZlYe8jOzd1_DyA7X@x1 Signed-off-by: Arnaldo Carvalho de Melo