KVM: X86: Introduce kvm_get_msr_feature() (66421c1e) · Commits · 戴 / test

Introduce kvm_get_msr_feature() to handle the msrs which are supported by different vendors and sharing the same emulation logic. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Liran Alon <liran.alon@oracle.com> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:

Wanpeng Li <wanpengli@tencent.com> Reviewed-by:

Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:

Radim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/x86.c

+15 −3

Original line number	Diff line number	Diff line
		@@ -1059,13 +1059,25 @@ static u32 msr_based_features[] = {

		static unsigned int num_msr_based_features;

		static int kvm_get_msr_feature(struct kvm_msr_entry *msr)
		{
		switch (msr->index) {
		default:
		if (kvm_x86_ops->get_msr_feature(msr))
		return 1;
		}
		return 0;
		}

		static int do_get_msr_feature(struct kvm_vcpu vcpu, unsigned index, u64 data)
		{
		struct kvm_msr_entry msr;
		int r;

		msr.index = index;
		if (kvm_x86_ops->get_msr_feature(&msr))
		return 1;
		r = kvm_get_msr_feature(&msr);
		if (r)
		return r;

		*data = msr.data;

		@@ -4522,7 +4534,7 @@ static void kvm_init_msr_list(void)
		struct kvm_msr_entry msr;

		msr.index = msr_based_features[i];
		if (kvm_x86_ops->get_msr_feature(&msr))
		if (kvm_get_msr_feature(&msr))
		continue;

		if (j < i)

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