In long mode, vm86 mode is disallowed, so we need not check for it. Reading rflags.vm may require a VMREAD, so it is expensive.
Signed-off-by: Avi Kivity <[email protected]> --- arch/x86/kvm/vmx.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6118177..82dbebd 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2107,7 +2107,8 @@ static int vmx_get_cpl(struct kvm_vcpu *vcpu) if (!is_protmode(vcpu)) return 0; - if (kvm_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */ + if (!is_long_mode(vcpu) + && (kvm_get_rflags(vcpu) & X86_EFLAGS_VM)) /* if virtual 8086 */ return 3; return vmcs_read16(GUEST_CS_SELECTOR) & 3; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
