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[PATCH v4 1/6] target/arm/kvm: Set PMU for host only when available
From: |
Akihiko Odaki |
Subject: |
[PATCH v4 1/6] target/arm/kvm: Set PMU for host only when available |
Date: |
Sat, 20 Jul 2024 18:30:49 +0900 |
target/arm/kvm.c checked PMU availability but unconditionally set the
PMU feature flag for the host CPU model, which is confusing. Set the
feature flag only when available.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
target/arm/kvm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 70f79eda33cd..b20a35052f41 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -280,6 +280,7 @@ static bool
kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
if (kvm_arm_pmu_supported()) {
init.features[0] |= 1 << KVM_ARM_VCPU_PMU_V3;
pmu_supported = true;
+ features |= 1ULL << ARM_FEATURE_PMU;
}
if (!kvm_arm_create_scratch_host_vcpu(cpus_to_try, fdarray, &init)) {
@@ -448,7 +449,6 @@ static bool
kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
features |= 1ULL << ARM_FEATURE_V8;
features |= 1ULL << ARM_FEATURE_NEON;
features |= 1ULL << ARM_FEATURE_AARCH64;
- features |= 1ULL << ARM_FEATURE_PMU;
features |= 1ULL << ARM_FEATURE_GENERIC_TIMER;
ahcf->features = features;
--
2.45.2
- [PATCH v4 0/6] target/arm/kvm: Report PMU unavailability, Akihiko Odaki, 2024/07/20
- [PATCH v4 1/6] target/arm/kvm: Set PMU for host only when available,
Akihiko Odaki <=
- [PATCH v4 2/6] target/arm/kvm: Do not silently remove PMU, Akihiko Odaki, 2024/07/20
- [PATCH v4 3/6] target/arm: Always add pmu property for Armv7-A/R+, Akihiko Odaki, 2024/07/20
- [PATCH v4 4/6] hvf: arm: Raise an exception for sysreg by default, Akihiko Odaki, 2024/07/20
- [PATCH v4 5/6] hvf: arm: Properly disable PMU, Akihiko Odaki, 2024/07/20
- [PATCH v4 6/6] hvf: arm: Do not advance PC when raising an exception, Akihiko Odaki, 2024/07/20
- Re: [PATCH v4 0/6] target/arm/kvm: Report PMU unavailability, Peter Maydell, 2024/07/29