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>
git-mirror · May 17, 2010 · de3e648 · de3e648
1 parent 6550e1f
commit de3e648
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
@@ -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;
 }