提交 80890006 编写于 作者: A Avi Kivity

KVM: x86 emulator: implement LTR

Opcode 0F 00 /3.  Encountered during Windows XP secondary processor bringup.
Signed-off-by: NAvi Kivity <avi@redhat.com>
上级 869be99c
......@@ -3033,6 +3033,15 @@ static int em_lldt(struct x86_emulate_ctxt *ctxt)
return load_segment_descriptor(ctxt, sel, VCPU_SREG_LDTR);
}
static int em_ltr(struct x86_emulate_ctxt *ctxt)
{
u16 sel = ctxt->src.val;
/* Disable writeback. */
ctxt->dst.type = OP_NONE;
return load_segment_descriptor(ctxt, sel, VCPU_SREG_TR);
}
static int em_invlpg(struct x86_emulate_ctxt *ctxt)
{
int rc;
......@@ -3579,7 +3588,7 @@ static struct opcode group6[] = {
DI(Prot, sldt),
DI(Prot, str),
II(Prot | Priv | SrcMem16, em_lldt, lldt),
DI(Prot | Priv, ltr),
II(Prot | Priv | SrcMem16, em_ltr, ltr),
N, N, N, N,
};
......
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