From: Avi Kivity <a...@redhat.com> commit 332b56e4841ef62db4dbf1b4b92195575e1c7338 upstream
Intercept RDPMC and forward it to the PMU emulation code. Signed-off-by: Avi Kivity <a...@redhat.com> Signed-off-by: Gleb Natapov <g...@redhat.com> Signed-off-by: Avi Kivity <a...@redhat.com> BugLink: http://bugs.launchpad.net/bugs/1031090 (cherry-picked from commit 332b56e4841ef62db4dbf1b4b92195575e1c7338 upstream) Signed-off-by: Stefan Bader <stefan.ba...@canonical.com> --- arch/x86/kvm/svm.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 94a4672..e385214 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1019,6 +1019,7 @@ static void init_vmcb(struct vcpu_svm *svm) set_intercept(svm, INTERCEPT_NMI); set_intercept(svm, INTERCEPT_SMI); set_intercept(svm, INTERCEPT_SELECTIVE_CR0); + set_intercept(svm, INTERCEPT_RDPMC); set_intercept(svm, INTERCEPT_CPUID); set_intercept(svm, INTERCEPT_INVD); set_intercept(svm, INTERCEPT_HLT); @@ -2775,6 +2776,19 @@ static int emulate_on_interception(struct vcpu_svm *svm) return emulate_instruction(&svm->vcpu, 0) == EMULATE_DONE; } +static int rdpmc_interception(struct vcpu_svm *svm) +{ + int err; + + if (!static_cpu_has(X86_FEATURE_NRIPS)) + return emulate_on_interception(svm); + + err = kvm_rdpmc(&svm->vcpu); + kvm_complete_insn_gp(&svm->vcpu, err); + + return 1; +} + bool check_selective_cr0_intercepted(struct vcpu_svm *svm, unsigned long val) { unsigned long cr0 = svm->vcpu.arch.cr0; @@ -3195,6 +3209,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm) = { [SVM_EXIT_SMI] = nop_on_interception, [SVM_EXIT_INIT] = nop_on_interception, [SVM_EXIT_VINTR] = interrupt_window_interception, + [SVM_EXIT_RDPMC] = rdpmc_interception, [SVM_EXIT_CPUID] = cpuid_interception, [SVM_EXIT_IRET] = iret_interception, [SVM_EXIT_INVD] = emulate_on_interception, -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
