KVM: SVM: Report emulated SVM features to userspace (c2c63a49) · Commits · 戴 / test

This patch implements the reporting of the emulated SVM features to userspace instead of the real hardware capabilities. Every real hardware capability needs emulation in nested svm so the old behavior was broken. Cc: stable@kernel.org Signed-off-by:

Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:

Avi Kivity <avi@redhat.com>

arch/x86/kvm/svm.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -3154,6 +3154,16 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu)

		static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
		{
		switch (func) {
		case 0x8000000A:
		entry->eax = 1; /* SVM revision 1 */
		entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper
		ASID emulation to nested SVM */
		entry->ecx = 0; /* Reserved */
		entry->edx = 0; /* Do not support any additional features */

		break;
		}
		}

		static const struct trace_print_flags svm_exit_reasons_str[] = {

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