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Revert "KVM: nested VMX: disable perf cpuid reporting"
This reverts commitbc6134942d
. A CPUID instruction executed in VMX non-root mode always causes a VM-exit, regardless of the leaf being queried. Fixes:bc6134942d
("KVM: nested VMX: disable perf cpuid reporting") Signed-off-by: Jim Mattson <jmattson@google.com> [The issue solved bybc6134942d
has been resolved withff651cb613
("KVM: nVMX: Add nested msr load/restore algorithm").] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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@ -861,12 +861,6 @@ void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
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if (!best)
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best = check_cpuid_limit(vcpu, function, index);
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/*
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* Perfmon not yet supported for L2 guest.
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*/
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if (is_guest_mode(vcpu) && function == 0xa)
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best = NULL;
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if (best) {
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*eax = best->eax;
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*ebx = best->ebx;
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@ -8203,8 +8203,6 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
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case EXIT_REASON_TASK_SWITCH:
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return true;
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case EXIT_REASON_CPUID:
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if (kvm_register_read(vcpu, VCPU_REGS_RAX) == 0xa)
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return false;
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return true;
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case EXIT_REASON_HLT:
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return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING);
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