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| author |  Paolo Bonzini <pbonzini@redhat.com>
| 2022-05-20 07:16:27 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com>
| 2022-05-25 05:09:23 -0400 |
| commit | 47e8eec83262083c7da220446551eaad614218ea (patch) | |
| tree | 1bcdf6cb6541441d1042fdf68c2f7982d80a9178 /arch/x86/kvm/pmu.h | |
| parent | KVM: selftests: x86: Fix test failure on arch lbr capable platforms (diff) | |
| parent | Merge branch kvm-arm64/its-save-restore-fixes-5.19 into kvmarm-master/next (diff) | |
| download | linux-47e8eec83262083c7da220446551eaad614218ea.tar.gz linux-47e8eec83262083c7da220446551eaad614218ea.tar.bz2 linux-47e8eec83262083c7da220446551eaad614218ea.zip | |
Merge tag 'kvmarm-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 5.19
- Add support for the ARMv8.6 WFxT extension
- Guard pages for the EL2 stacks
- Trap and emulate AArch32 ID registers to hide unsupported features
- Ability to select and save/restore the set of hypercalls exposed
to the guest
- Support for PSCI-initiated suspend in collaboration with userspace
- GICv3 register-based LPI invalidation support
- Move host PMU event merging into the vcpu data structure
- GICv3 ITS save/restore fixes
- The usual set of small-scale cleanups and fixes
[Due to the conflict, KVM_SYSTEM_EVENT_SEV_TERM is relocated
from 4 to 6. - Paolo]
Diffstat (limited to 'arch/x86/kvm/pmu.h')
| -rw-r--r-- | arch/x86/kvm/pmu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h index 2a53b6c9495c..e745f443b6a8 100644 --- a/arch/x86/kvm/pmu.h +++ b/arch/x86/kvm/pmu.h @@ -135,6 +135,15 @@ static inline u64 get_sample_period(struct kvm_pmc *pmc, u64 counter_value) return sample_period; } +static inline void pmc_update_sample_period(struct kvm_pmc *pmc) +{ + if (!pmc->perf_event || pmc->is_paused) + return; + + perf_event_period(pmc->perf_event, + get_sample_period(pmc, pmc->counter)); +} + void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel); void reprogram_fixed_counter(struct kvm_pmc *pmc, u8 ctrl, int fixed_idx); void reprogram_counter(struct kvm_pmu *pmu, int pmc_idx); |