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| author | Uros Bizjak <ubizjak@gmail.com> | 2020-10-29 15:04:57 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-12 01:00:57 +0100 |
| commit | 6c44221b05236cc65d76cb5dc2463f738edff39d (patch) | |
| tree | 66e2db1fc3087077ae9b6521092a78937b48051b /arch/x86/kvm/vmx/vmenter.S | |
| parent | KVM: x86: ignore SIPIs that are received while not in wait-for-sipi state (diff) | |
| download | linux-6c44221b05236cc65d76cb5dc2463f738edff39d.tar.xz linux-6c44221b05236cc65d76cb5dc2463f738edff39d.zip | |
KVM/VMX: Use TEST %REG,%REG instead of CMP $0,%REG in vmenter.S
Saves one byte in __vmx_vcpu_run for the same functionality.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Message-Id: <20201029140457.126965-1-ubizjak@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmenter.S')
| -rw-r--r-- | arch/x86/kvm/vmx/vmenter.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx/vmenter.S b/arch/x86/kvm/vmx/vmenter.S index 90ad7a6246e3..e85aa5faa22d 100644 --- a/arch/x86/kvm/vmx/vmenter.S +++ b/arch/x86/kvm/vmx/vmenter.S @@ -132,7 +132,7 @@ SYM_FUNC_START(__vmx_vcpu_run) mov (%_ASM_SP), %_ASM_AX /* Check if vmlaunch or vmresume is needed */ - cmpb $0, %bl + testb %bl, %bl /* Load guest registers. Don't clobber flags. */ mov VCPU_RCX(%_ASM_AX), %_ASM_CX |