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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-01-25 07:40:59 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-02-12 13:12:20 +0100 |
| commit | bbc0b8239257d91cd43fe219de5552dee8bb9123 (patch) | |
| tree | 1aa729f87e615c43fd3268fa0cc108c6d2e9817e /arch/x86/kvm/vmx/nested.c | |
| parent | f1727b4954772a778df0b73a93c4b646fd3c21f6 (diff) | |
| download | lwn-bbc0b8239257d91cd43fe219de5552dee8bb9123.tar.gz lwn-bbc0b8239257d91cd43fe219de5552dee8bb9123.zip | |
KVM: nVMX: Capture VM-Fail via CC_{SET,OUT} in nested early checks
...to take advantage of __GCC_ASM_FLAG_OUTPUTS__ when possible.
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/nested.c')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index bfacf9029466..67f8fdf568eb 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -2768,12 +2768,12 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu) * VMLAUNCH and VMRESUME clear RFLAGS.{CF,ZF} on VM-Exit, set * RFLAGS.CF on VM-Fail Invalid and set RFLAGS.ZF on VM-Fail * Valid. vmx_vmenter() directly "returns" RFLAGS, and so the - * results of VM-Enter is captured via SETBE to vm_fail. + * results of VM-Enter is captured via CC_{SET,OUT} to vm_fail. */ "call vmx_vmenter\n\t" - "setbe %[fail]\n\t" - : ASM_CALL_CONSTRAINT, [fail]"=qm"(vm_fail) + CC_SET(be) + : ASM_CALL_CONSTRAINT, CC_OUT(be) (vm_fail) : "c"(vmx), "d"((unsigned long)HOST_RSP), [launched]"i"(offsetof(struct vcpu_vmx, __launched)), [host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)), |