diff options
| author | Reiji Watanabe <[email protected]> | 2023-10-20 21:40:43 +0000 |
|---|---|---|
| committer | Oliver Upton <[email protected]> | 2023-10-24 22:59:29 +0000 |
| commit | 57fc267f1b5caa56dfb46f60e20e673cbc4cc4a8 (patch) | |
| tree | 777d71453467714f91752cd99f9236177e745407 /include | |
| parent | 427733579744ef22ee6d0da9907560d79d937458 (diff) | |
KVM: arm64: PMU: Add a helper to read a vCPU's PMCR_EL0
Add a helper to read a vCPU's PMCR_EL0, and use it whenever KVM
reads a vCPU's PMCR_EL0.
Currently, the PMCR_EL0 value is tracked per vCPU. The following
patches will make (only) PMCR_EL0.N track per guest. Having the
new helper will be useful to combine the PMCR_EL0.N field
(tracked per guest) and the other fields (tracked per vCPU)
to provide the value of PMCR_EL0.
No functional change intended.
Reviewed-by: Sebastian Ott <[email protected]>
Signed-off-by: Reiji Watanabe <[email protected]>
Signed-off-by: Raghavendra Rao Ananta <[email protected]>
Reviewed-by: Eric Auger <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>
Diffstat (limited to 'include')
| -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 b80c75d80886..c6a5e49b850a 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -103,6 +103,7 @@ void kvm_vcpu_pmu_resync_el0(void); u8 kvm_arm_pmu_get_pmuver_limit(void); int kvm_arm_set_default_pmu(struct kvm *kvm); +u64 kvm_vcpu_read_pmcr(struct kvm_vcpu *vcpu); #else struct kvm_pmu { }; @@ -180,6 +181,11 @@ static inline int kvm_arm_set_default_pmu(struct kvm *kvm) return -ENODEV; } +static inline u64 kvm_vcpu_read_pmcr(struct kvm_vcpu *vcpu) +{ + return 0; +} + #endif #endif |