diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2014-09-18 18:24:57 -0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-24 14:07:50 +0200 |
| commit | bc6134942dbbf31c25e9bd7c876be5da81c9e1ce (patch) | |
| tree | 883797ada98b8affc79b9dc9752b86c6e1aad3ac /arch/x86/kvm/vmx.c | |
| parent | a2b9e6c1a35afcc0973acb72e591c714e78885ff (diff) | |
KVM: nested VMX: disable perf cpuid reporting
Initilization of L2 guest with -cpu host, on L1 guest with -cpu host
triggers:
(qemu) KVM: entry failed, hardware error 0x7
...
nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
Nested VMX MSR load/store support is not sufficient to
allow perf for L2 guest.
Until properly fixed, trap CPUID and disable function 0xA.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e8f08e91592d..2ab504791190 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6986,6 +6986,8 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu) case EXIT_REASON_TASK_SWITCH: return 1; case EXIT_REASON_CPUID: + if (kvm_register_read(vcpu, VCPU_REGS_RAX) == 0xa) + return 0; return 1; case EXIT_REASON_HLT: return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING); |