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KVM: x86 emulator: implement LTR
Opcode 0F 00 /3. Encountered during Windows XP secondary processor bringup. Signed-off-by: Avi Kivity <avi@redhat.com>
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1 changed files with 10 additions and 1 deletions
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@ -3033,6 +3033,15 @@ static int em_lldt(struct x86_emulate_ctxt *ctxt)
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return load_segment_descriptor(ctxt, sel, VCPU_SREG_LDTR);
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}
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static int em_ltr(struct x86_emulate_ctxt *ctxt)
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{
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u16 sel = ctxt->src.val;
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/* Disable writeback. */
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ctxt->dst.type = OP_NONE;
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return load_segment_descriptor(ctxt, sel, VCPU_SREG_TR);
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}
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static int em_invlpg(struct x86_emulate_ctxt *ctxt)
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{
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int rc;
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@ -3579,7 +3588,7 @@ static struct opcode group6[] = {
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DI(Prot, sldt),
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DI(Prot, str),
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II(Prot | Priv | SrcMem16, em_lldt, lldt),
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DI(Prot | Priv, ltr),
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II(Prot | Priv | SrcMem16, em_ltr, ltr),
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N, N, N, N,
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};
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