Commit de3e6480 authored Mar 21, 2010 by Gleb Natapov Committed by Avi Kivity May 17, 2010

KVM: x86 emulator: fix unlocked CMPXCHG8B emulation



When CMPXCHG8B is executed without LOCK prefix it is racy. Preserve this
behaviour in emulator too.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

parent 6550e1f1

arch/x86/kvm/emulate.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -1724,7 +1724,6 @@ static inline int emulate_grp9(struct x86_emulate_ctxt *ctxt,
		(u32) c->regs[VCPU_REGS_RBX];

		ctxt->eflags \|= EFLG_ZF;
		c->lock_prefix = 1;
		}
		return X86EMUL_CONTINUE;
		}