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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-28 11:22:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-28 11:22:40 -0700 |
| commit | 2594b713c12faa8976f97d8d16b3d8b343ff4ea2 (patch) | |
| tree | ad8c09a00b0d274696934e258c17f31ba620a692 /arch/x86/events/intel | |
| parent | f565b20734d32bab5a899123d2c58909dbf46a5d (diff) | |
| parent | 293649307ef9abcd4f83f6dac4d4400dfd97c936 (diff) | |
| download | linux-2594b713c12faa8976f97d8d16b3d8b343ff4ea2.tar.bz2 | |
Merge tag 'x86_cpu_for_v5.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Borislav Petkov:
- New AMD models support
- Allow MONITOR/MWAIT to be used for C1 state entry on Hygon too
- Use the special RAPL CPUID bit to detect the functionality on AMD and
Hygon instead of doing family matching.
- Add support for new Intel microcode deprecating TSX on some models
and do not enable kernel workarounds for those CPUs when TSX
transactions always abort, as a result of that microcode update.
* tag 'x86_cpu_for_v5.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tsx: Clear CPUID bits when TSX always force aborts
x86/events/intel: Do not deploy TSX force abort workaround when TSX is deprecated
x86/msr: Define new bits in TSX_FORCE_ABORT MSR
perf/x86/rapl: Use CPUID bit on AMD and Hygon parts
x86/cstate: Allow ACPI C1 FFH MWAIT use on Hygon systems
x86/amd_nb: Add AMD family 19h model 50h PCI ids
x86/cpu: Fix core name for Sapphire Rapids
Diffstat (limited to 'arch/x86/events/intel')
| -rw-r--r-- | arch/x86/events/intel/core.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index e28892270c58..3a77f66730d0 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -6015,7 +6015,13 @@ __init int intel_pmu_init(void) tsx_attr = hsw_tsx_events_attrs; intel_pmu_pebs_data_source_skl(pmem); - if (boot_cpu_has(X86_FEATURE_TSX_FORCE_ABORT)) { + /* + * Processors with CPUID.RTM_ALWAYS_ABORT have TSX deprecated by default. + * TSX force abort hooks are not required on these systems. Only deploy + * workaround when microcode has not enabled X86_FEATURE_RTM_ALWAYS_ABORT. + */ + if (boot_cpu_has(X86_FEATURE_TSX_FORCE_ABORT) && + !boot_cpu_has(X86_FEATURE_RTM_ALWAYS_ABORT)) { x86_pmu.flags |= PMU_FL_TFA; x86_pmu.get_event_constraints = tfa_get_event_constraints; x86_pmu.enable_all = intel_tfa_pmu_enable_all; |