KVM: SVM: Add a dedicated INVD intercept routine (4bb05f30) · Commits · 戴 / test

The INVD instruction intercept performs emulation. Emulation can't be done on an SEV guest because the guest memory is encrypted. Provide a dedicated intercept routine for the INVD intercept. And since the instruction is emulated as a NOP, just skip it instead. Fixes: ("KVM: SVM: Add KVM_SEV_INIT command") Signed-off-by:

Tom Lendacky <thomas.lendacky@amd.com> Message-Id: <a0b9a19ffa7fef86a3cc700c7ea01cb2731e04e5.1600972918.git.thomas.lendacky@amd.com> Signed-off-by:

Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm/svm.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -2183,6 +2183,12 @@ static int iret_interception(struct vcpu_svm *svm)
		return 1;
		}

		static int invd_interception(struct vcpu_svm *svm)
		{
		/* Treat an INVD instruction as a NOP and just skip it. */
		return kvm_skip_emulated_instruction(&svm->vcpu);
		}

		static int invlpg_interception(struct vcpu_svm *svm)
		{
		if (!static_cpu_has(X86_FEATURE_DECODEASSISTS))
		@@ -2774,7 +2780,7 @@ static int (const svm_exit_handlers[])(struct vcpu_svm svm) = {
		[SVM_EXIT_RDPMC] = rdpmc_interception,
		[SVM_EXIT_CPUID] = cpuid_interception,
		[SVM_EXIT_IRET] = iret_interception,
		[SVM_EXIT_INVD] = emulate_on_interception,
		[SVM_EXIT_INVD] = invd_interception,
		[SVM_EXIT_PAUSE] = pause_interception,
		[SVM_EXIT_HLT] = halt_interception,
		[SVM_EXIT_INVLPG] = invlpg_interception,

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