diff options
| author | Oliver Upton <[email protected]> | 2024-10-25 18:25:59 +0000 |
|---|---|---|
| committer | Oliver Upton <[email protected]> | 2024-10-31 19:00:41 +0000 |
| commit | ae323e035801def145776dddf46c01ca1b90d21d (patch) | |
| tree | 694aeedb349a8a4fd1d005922760bd09b3b206bf /arch/arm64/kvm/emulate-nested.c | |
| 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 <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>
Diffstat (limited to 'arch/arm64/kvm/emulate-nested.c')
| -rw-r--r-- | arch/arm64/kvm/emulate-nested.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c index 897ea81ed2b2..71c97c214c1c 100644 --- a/arch/arm64/kvm/emulate-nested.c +++ b/arch/arm64/kvm/emulate-nested.c @@ -2450,6 +2450,8 @@ void kvm_emulate_nested_eret(struct kvm_vcpu *vcpu) kvm_arch_vcpu_load(vcpu, smp_processor_id()); preempt_enable(); + + kvm_pmu_nested_transition(vcpu); } static void kvm_inject_el2_exception(struct kvm_vcpu *vcpu, u64 esr_el2, @@ -2532,6 +2534,8 @@ static int kvm_inject_nested(struct kvm_vcpu *vcpu, u64 esr_el2, kvm_arch_vcpu_load(vcpu, smp_processor_id()); preempt_enable(); + kvm_pmu_nested_transition(vcpu); + return 1; } |