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Commit 332b56e4 authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: SVM: Intercept RDPMC 



Intercept RDPMC and forward it to the PMU emulation code.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 022cd0e8

arch/x86/kvm/svm.c

+15 −0
Original line number Diff line number Diff line
@@ -1014,6 +1014,7 @@ 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);
@@ -2770,6 +2771,19 @@ 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;
@@ -3190,6 +3204,7 @@ 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,