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Diffstat (limited to 'arch/x86/kvm/pmu_amd.c')
-rw-r--r--arch/x86/kvm/pmu_amd.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/arch/x86/kvm/pmu_amd.c b/arch/x86/kvm/pmu_amd.c
index c8388389a3b0..ce0b10fe5e2b 100644
--- a/arch/x86/kvm/pmu_amd.c
+++ b/arch/x86/kvm/pmu_amd.c
@@ -174,7 +174,7 @@ static struct kvm_pmc *amd_pmc_idx_to_pmc(struct kvm_pmu *pmu, int pmc_idx)
}
/* returns 0 if idx's corresponding MSR exists; otherwise returns 1. */
-static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
+static int amd_is_valid_rdpmc_ecx(struct kvm_vcpu *vcpu, unsigned int idx)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
@@ -184,7 +184,8 @@ static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
}
/* idx is the ECX register of RDPMC instruction */
-static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *mask)
+static struct kvm_pmc *amd_rdpmc_ecx_to_pmc(struct kvm_vcpu *vcpu,
+ unsigned int idx, u64 *mask)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *counters;
@@ -199,13 +200,19 @@ static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx, u
static bool amd_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
{
+ /* All MSRs refer to exactly one PMC, so msr_idx_to_pmc is enough. */
+ return false;
+}
+
+static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, u32 msr)
+{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
- int ret = false;
+ struct kvm_pmc *pmc;
- ret = get_gp_pmc_amd(pmu, msr, PMU_TYPE_COUNTER) ||
- get_gp_pmc_amd(pmu, msr, PMU_TYPE_EVNTSEL);
+ pmc = get_gp_pmc_amd(pmu, msr, PMU_TYPE_COUNTER);
+ pmc = pmc ? pmc : get_gp_pmc_amd(pmu, msr, PMU_TYPE_EVNTSEL);
- return ret;
+ return pmc;
}
static int amd_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
@@ -272,6 +279,7 @@ static void amd_pmu_refresh(struct kvm_vcpu *vcpu)
pmu->counter_bitmask[KVM_PMC_FIXED] = 0;
pmu->nr_arch_fixed_counters = 0;
pmu->global_status = 0;
+ bitmap_set(pmu->all_valid_pmc_idx, 0, pmu->nr_arch_gp_counters);
}
static void amd_pmu_init(struct kvm_vcpu *vcpu)
@@ -285,6 +293,7 @@ static void amd_pmu_init(struct kvm_vcpu *vcpu)
pmu->gp_counters[i].type = KVM_PMC_GP;
pmu->gp_counters[i].vcpu = vcpu;
pmu->gp_counters[i].idx = i;
+ pmu->gp_counters[i].current_config = 0;
}
}
@@ -306,8 +315,9 @@ struct kvm_pmu_ops amd_pmu_ops = {
.find_fixed_event = amd_find_fixed_event,
.pmc_is_enabled = amd_pmc_is_enabled,
.pmc_idx_to_pmc = amd_pmc_idx_to_pmc,
+ .rdpmc_ecx_to_pmc = amd_rdpmc_ecx_to_pmc,
.msr_idx_to_pmc = amd_msr_idx_to_pmc,
- .is_valid_msr_idx = amd_is_valid_msr_idx,
+ .is_valid_rdpmc_ecx = amd_is_valid_rdpmc_ecx,
.is_valid_msr = amd_is_valid_msr,
.get_msr = amd_pmu_get_msr,
.set_msr = amd_pmu_set_msr,