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| author | Marc Zyngier <maz@kernel.org> | 2024-02-14 13:18:03 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-02-19 17:12:59 +0000 |
| commit | c62d7a23b9479b946f00d58046e0bdf7f233a2b9 (patch) | |
| tree | c53edfe0c30158f0825863eed45f1930a99492eb /include/kvm | |
| parent | aeddd5b214c8ce7271d7da7aa64ff20fb9032966 (diff) | |
| download | linux-c62d7a23b9479b946f00d58046e0bdf7f233a2b9.tar.gz | |
KVM: arm64: Add feature checking helpers
In order to make it easier to check whether a particular feature
is exposed to a guest, add a new set of helpers, with kvm_has_feat()
being the most useful.
Let's start making use of them in the PMU code (courtesy of Oliver).
Follow-up changes will introduce additional use patterns.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Co-developed--by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240214131827.2856277-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_pmu.h | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index 4b9d8fb393a84..eb4c369a79eb3 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -90,16 +90,6 @@ void kvm_vcpu_pmu_resync_el0(void); vcpu->arch.pmu.events = *kvm_get_pmu_events(); \ } while (0) -/* - * Evaluates as true when emulating PMUv3p5, and false otherwise. - */ -#define kvm_pmu_is_3p5(vcpu) ({ \ - u64 val = IDREG(vcpu->kvm, SYS_ID_AA64DFR0_EL1); \ - u8 pmuver = SYS_FIELD_GET(ID_AA64DFR0_EL1, PMUVer, val); \ - \ - pmuver >= ID_AA64DFR0_EL1_PMUVer_V3P5; \ -}) - u8 kvm_arm_pmu_get_pmuver_limit(void); u64 kvm_pmu_evtyper_mask(struct kvm *kvm); int kvm_arm_set_default_pmu(struct kvm *kvm); @@ -168,7 +158,6 @@ static inline u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1) } #define kvm_vcpu_has_pmu(vcpu) ({ false; }) -#define kvm_pmu_is_3p5(vcpu) ({ false; }) 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) {} |