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authorMarc Zyngier <maz@kernel.org>2024-02-14 16:18:03 +0300
committerOliver Upton <oliver.upton@linux.dev>2024-02-19 20:12:59 +0300
commitc62d7a23b9479b946f00d58046e0bdf7f233a2b9 (patch)
treec53edfe0c30158f0825863eed45f1930a99492eb /include/kvm/arm_pmu.h
parentaeddd5b214c8ce7271d7da7aa64ff20fb9032966 (diff)
downloadlinux-c62d7a23b9479b946f00d58046e0bdf7f233a2b9.tar.xz
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/arm_pmu.h')
-rw-r--r--include/kvm/arm_pmu.h11
1 files changed, 0 insertions, 11 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h
index 4b9d8fb393a8..eb4c369a79eb 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) {}