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| author | Marc Zyngier <maz@kernel.org> | 2023-08-28 11:29:11 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-08-28 11:29:11 +0300 |
| commit | 50a40ff7d311da4c28e7f9d5e9113b4fab3b7b8e (patch) | |
| tree | 14d88b06e981238f80c446f3feabbd1b8771cef7 /include | |
| parent | d58335d10fd7617addb48b3c4f06c373c2f76529 (diff) | |
| parent | 9b80b9676be901eb980c48543a19d7026d2f84b8 (diff) | |
| download | linux-50a40ff7d311da4c28e7f9d5e9113b4fab3b7b8e.tar.xz | |
Merge branch kvm-arm64/6.6/pmu-fixes into kvmarm-master/next
* kvm-arm64/6.6/pmu-fixes:
: .
: Another set of PMU fixes, coutrtesy of Reiji Watanabe.
: From the cover letter:
:
: "This series fixes a couple of PMUver related handling of
: vPMU support.
:
: On systems where the PMUVer is not uniform across all PEs,
: KVM currently does not advertise PMUv3 to the guest,
: even if userspace successfully runs KVM_ARM_VCPU_INIT with
: KVM_ARM_VCPU_PMU_V3."
:
: Additionally, a fix for an obscure counter oversubscription
: issue happening when the hsot profines the guest's EL0.
: .
KVM: arm64: pmu: Guard PMU emulation definitions with CONFIG_KVM
KVM: arm64: pmu: Resync EL0 state on counter rotation
KVM: arm64: PMU: Don't advertise STALL_SLOT_{FRONTEND,BACKEND}
KVM: arm64: PMU: Don't advertise the STALL_SLOT event
KVM: arm64: PMU: Avoid inappropriate use of host's PMUVer
KVM: arm64: PMU: Disallow vPMU on non-uniform PMUVer
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/kvm/arm_pmu.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index 847da6fc2713..31029f4f7be8 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -12,7 +12,7 @@ #define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1) -#ifdef CONFIG_HW_PERF_EVENTS +#if IS_ENABLED(CONFIG_HW_PERF_EVENTS) && IS_ENABLED(CONFIG_KVM) struct kvm_pmc { u8 idx; /* index into the pmu->pmc array */ @@ -74,6 +74,7 @@ int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu); struct kvm_pmu_events *kvm_get_pmu_events(void); void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu); void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu); +void kvm_vcpu_pmu_resync_el0(void); #define kvm_vcpu_has_pmu(vcpu) \ (test_bit(KVM_ARM_VCPU_PMU_V3, (vcpu)->arch.features)) @@ -171,6 +172,7 @@ static inline u8 kvm_arm_pmu_get_pmuver_limit(void) { return 0; } +static inline void kvm_vcpu_pmu_resync_el0(void) {} #endif |