diff options
| author | Like Xu <likexu@tencent.com> | 2023-06-03 04:10:51 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-06-07 03:31:44 +0300 |
| commit | 13afa29ae489d9b7c1038179f1e2bec74873e471 (patch) | |
| tree | f5d5d5296e4dad036024b0cebebd34db57e245b8 /arch/x86/kvm/svm | |
| parent | c85cdc1cc1ea27573ab15c76f13a06f12530aa54 (diff) | |
| download | linux-13afa29ae489d9b7c1038179f1e2bec74873e471.tar.xz | |
KVM: x86/pmu: Provide Intel PMU's pmc_is_enabled() as generic x86 code
Move the Intel PMU implementation of pmc_is_enabled() to common x86 code
as pmc_is_globally_enabled(), and drop AMD's implementation. AMD PMU
currently supports only v1, and thus not PERF_GLOBAL_CONTROL, thus the
semantics for AMD are unchanged. And when support for AMD PMU v2 comes
along, the common behavior will also Just Work.
Signed-off-by: Like Xu <likexu@tencent.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20230603011058.1038821-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/svm')
| -rw-r--r-- | arch/x86/kvm/svm/pmu.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c index 5fa939e411d8..70143275e0a7 100644 --- a/arch/x86/kvm/svm/pmu.c +++ b/arch/x86/kvm/svm/pmu.c @@ -78,14 +78,6 @@ static bool amd_hw_event_available(struct kvm_pmc *pmc) return true; } -/* check if a PMC is enabled by comparing it against global_ctrl bits. Because - * AMD CPU doesn't have global_ctrl MSR, all PMCs are enabled (return TRUE). - */ -static bool amd_pmc_is_enabled(struct kvm_pmc *pmc) -{ - return true; -} - static bool amd_is_valid_rdpmc_ecx(struct kvm_vcpu *vcpu, unsigned int idx) { struct kvm_pmu *pmu = vcpu_to_pmu(vcpu); @@ -220,7 +212,6 @@ static void amd_pmu_reset(struct kvm_vcpu *vcpu) struct kvm_pmu_ops amd_pmu_ops __initdata = { .hw_event_available = amd_hw_event_available, - .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, |