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| author | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-02 01:21:27 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-02 01:21:27 +0200 |
| commit | 29250ba51bc1cbe8a87e923f76978b87c3247a8c (patch) | |
| tree | b6afc83e580ae3b746aa530434f56bb6fb80cc8b /arch/x86/events/intel/lbr.c | |
| parent | Merge tag 'kvm-riscv-fixes-6.0-1' of https://github.com/kvm-riscv/linux into ... (diff) | |
| parent | KVM: s390: pci: Hook to access KVM lowlevel from VFIO (diff) | |
| download | linux-29250ba51bc1cbe8a87e923f76978b87c3247a8c.tar.xz linux-29250ba51bc1cbe8a87e923f76978b87c3247a8c.zip | |
Merge tag 'kvm-s390-master-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
PCI interpretation compile fixes
Diffstat (limited to 'arch/x86/events/intel/lbr.c')
| -rw-r--r-- | arch/x86/events/intel/lbr.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index 4f70fb6c2c1e..47fca6a7a8bc 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -1097,6 +1097,14 @@ static int intel_pmu_setup_hw_lbr_filter(struct perf_event *event) if (static_cpu_has(X86_FEATURE_ARCH_LBR)) { reg->config = mask; + + /* + * The Arch LBR HW can retrieve the common branch types + * from the LBR_INFO. It doesn't require the high overhead + * SW disassemble. + * Enable the branch type by default for the Arch LBR. + */ + reg->reg |= X86_BR_TYPE_SAVE; return 0; } |