diff options
| author | Oliver Upton <oliver.upton@linux.dev> | 2024-10-25 18:25:59 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-10-31 19:00:41 +0000 |
| commit | ae323e035801def145776dddf46c01ca1b90d21d (patch) | |
| tree | 694aeedb349a8a4fd1d005922760bd09b3b206bf /include/kvm | |
| parent | 8a34979030f6bcb713476ae485a58f5d8e96ebea (diff) | |
KVM: arm64: nv: Reprogram PMU events affected by nested transition
Start reprogramming PMU events at nested boundaries now that everything
is in place to handle the EL2 event filter. Only repaint events where
the filter differs between EL1 and EL2 as a slight optimization.
PMU now 'works' for nested VMs, albeit slow.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241025182559.3364829-1-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_pmu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index 76244f0bd47a..e61dd7dd2286 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -98,6 +98,7 @@ u8 kvm_arm_pmu_get_max_counters(struct kvm *kvm); u64 kvm_vcpu_read_pmcr(struct kvm_vcpu *vcpu); bool kvm_pmu_counter_is_hyp(struct kvm_vcpu *vcpu, unsigned int idx); +void kvm_pmu_nested_transition(struct kvm_vcpu *vcpu); #else struct kvm_pmu { }; @@ -198,6 +199,8 @@ static inline bool kvm_pmu_counter_is_hyp(struct kvm_vcpu *vcpu, unsigned int id return false; } +static inline void kvm_pmu_nested_transition(struct kvm_vcpu *vcpu) {} + #endif #endif |