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KVM: x86 emulator: do not munge rep prefix

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Currently we store a rep prefix as 1 or 2 depending on whether it is a REPE or
REPNE.  Since sse instructions depend on the prefix value, store it as the
original opcode to simplify things further on.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2010-01-20 16:00:35 +02:00
parent cef4dea07f
commit 1d6b114f20
2 changed files with 3 additions and 5 deletions
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4
arch/x86/kvm/emulate.c
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@ -2692,10 +2692,8 @@ x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
c->lock_prefix = 1;
break;
case 0xf2: /* REPNE/REPNZ */
c->rep_prefix = REPNE_PREFIX;
break;
case 0xf3: /* REP/REPE/REPZ */
c->rep_prefix = REPE_PREFIX;
c->rep_prefix = c->b;
break;
default:
goto done_prefixes;