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[v3,6/6] KVM: arm64: Reload PMCNTENSET_EL0

Message ID 20250312-pmc-v3-6-0411cab5dc3d@daynix.com (mailing list archive)
State New
Headers show
Series KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs | expand

Commit Message

Akihiko Odaki March 12, 2025, 11:56 a.m. UTC 
Disable counters that are no longer included in PMCNTENSET_EL0. It is
not necessary to enable counters included in PMCNTENSET_EL0 because
kvm_pmu_handle_pmcr() does so if appropriate.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 arch/arm64/kvm/pmu-emul.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index 2d19c6048091..b14655dda6db 100644
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -831,6 +831,8 @@  void kvm_vcpu_reload_pmu(struct kvm_vcpu *vcpu)
 {
 	u64 mask = kvm_pmu_valid_counter_mask(vcpu);
 
+	kvm_pmu_disable_counter_mask(vcpu, ~__vcpu_sys_reg(vcpu, PMCNTENSET_EL0));
+
 	__vcpu_sys_reg(vcpu, PMOVSSET_EL0) &= mask;
 	__vcpu_sys_reg(vcpu, PMINTENSET_EL1) &= mask;
 	__vcpu_sys_reg(vcpu, PMCNTENSET_EL0) &= mask;