KVM: VMX: Remove restriction that PMU version > 0 for PERF_CAPABILITIES

Drop the restriction that the PMU version is non-zero when handling writes
to PERF_CAPABILITIES now that KVM unconditionally checks for PDCM support.

Link: https://lore.kernel.org/r/20240802185511.305849-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index f0326927d4e1f75845951a37d1b8c8eb25b5d8a5..11a1d70f5ad7a2c8af7c0b9863a4512d067c3d01 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2456,8 +2456,6 @@ int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
                        vmx->pt_desc.guest.addr_a[index / 2] = data;
                break;
        case MSR_IA32_PERF_CAPABILITIES:
-               if (data && !vcpu_to_pmu(vcpu)->version)
-                       return 1;
                if (data & PMU_CAP_LBR_FMT) {
                        if ((data & PMU_CAP_LBR_FMT) !=
                            (kvm_caps.supported_perf_cap & PMU_CAP_LBR_FMT))