diff options
| author | Marc Zyngier <maz@kernel.org> | 2022-11-13 19:38:26 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-19 15:56:39 +0300 |
| commit | 3d0dba5764b94308b8c4257ad64e383f11ce0c92 (patch) | |
| tree | e8222c5ada162482953e8094ff9408008b9e60e7 /include/kvm | |
| parent | 26d2d0594d7016dbcbce4038aa202c2858d5a944 (diff) | |
| download | linux-3d0dba5764b94308b8c4257ad64e383f11ce0c92.tar.xz | |
KVM: arm64: PMU: Move the ID_AA64DFR0_EL1.PMUver limit to VM creation
As further patches will enable the selection of a PMU revision
from userspace, sample the supported PMU revision at VM creation
time, rather than building each time the ID_AA64DFR0_EL1 register
is accessed.
This shouldn't result in any change in behaviour.
Reviewed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221113163832.3154370-11-maz@kernel.org
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_pmu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index 96b192139a23..812f729c9108 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -89,6 +89,8 @@ void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu); vcpu->arch.pmu.events = *kvm_get_pmu_events(); \ } while (0) +u8 kvm_arm_pmu_get_pmuver_limit(void); + #else struct kvm_pmu { }; @@ -154,6 +156,10 @@ static inline u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1) static inline void kvm_pmu_update_vcpu_events(struct kvm_vcpu *vcpu) {} static inline void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu) {} static inline void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu) {} +static inline u8 kvm_arm_pmu_get_pmuver_limit(void) +{ + return 0; +} #endif |