diff options
| author | Avi Kivity <avi@redhat.com> | 2010-01-20 16:00:35 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-11 07:56:58 -0400 |
| commit | 1d6b114f20d06ac0749686e4d7b7c7913d9116db (patch) | |
| tree | 2be22fb5ba4fb76a73120776488a6e7ee4ba5bdc /arch/x86 | |
| parent | cef4dea07f6720b36cc93e18a2e68be4bdb71a92 (diff) | |
| download | talos-op-linux-1d6b114f20d06ac0749686e4d7b7c7913d9116db.tar.gz talos-op-linux-1d6b114f20d06ac0749686e4d7b7c7913d9116db.zip | |
KVM: x86 emulator: do not munge rep prefix
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>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/kvm_emulate.h | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/emulate.c | 4 |
2 files changed, 3 insertions, 5 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 0f5213564326..c00aed12755d 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -249,8 +249,8 @@ struct x86_emulate_ctxt { }; /* Repeat String Operation Prefix */ -#define REPE_PREFIX 1 -#define REPNE_PREFIX 2 +#define REPE_PREFIX 0xf3 +#define REPNE_PREFIX 0xf2 /* Execution mode, passed to the emulator. */ #define X86EMUL_MODE_REAL 0 /* Real mode. */ diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 0ad47b819a8b..075bb6fc73ae 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -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; |
