KVM: Remove dead code in the cmpxchg instruction emulation

The writeback fixes (02c03a326a5df825cc01de426f72e160db2b9538) let
some dead code in the cmpxchg instruction emulation. Remove it.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index ef7518a..2136da5 100644 (file)
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1278,8 +1278,6 @@ twobyte_insn:
                src.orig_val = src.val;
                src.val = _regs[VCPU_REGS_RAX];
                emulate_2op_SrcV("cmp", src, dst, _eflags);
-               /* Always write back. The question is: where to? */
-               d |= Mov;
                if (_eflags & EFLG_ZF) {
                        /* Success: write back to memory. */
                        dst.val = src.orig_val;