KVM: x86 emulator: cleanup xchg emulation

Dst operand is already initialized during decoding stage. No need to
reinitialize.

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

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index a81e6bf..a99d49c 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2804,8 +2804,8 @@ special_insn:
                        break;
                }
        case 0x91 ... 0x97: /* xchg reg,rax */
-               c->src.type = c->dst.type = OP_REG;
-               c->src.bytes = c->dst.bytes = c->op_bytes;
+               c->src.type = OP_REG;
+               c->src.bytes = c->op_bytes;
                c->src.ptr = (unsigned long *) &c->regs[VCPU_REGS_RAX];
                c->src.val = *(c->src.ptr);
                goto xchg;