Commit 6c44221b authored Oct 29, 2020 by Uros Bizjak Committed by Paolo Bonzini Dec 11, 2020

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>

parent f57ad63a

arch/x86/kvm/vmx/vmenter.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

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