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KVM: x86 emulator: emulate LLDT

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Opcode 0F 00 /2. Used by isolinux durign the protected mode transition.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2012-06-13 12:28:33 +03:00
parent 9299836e63
commit a14e579f22
1 changed files with 10 additions and 1 deletions
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11
arch/x86/kvm/emulate.c
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@ -3015,6 +3015,15 @@ static int em_mov_sreg_rm(struct x86_emulate_ctxt *ctxt)
return load_segment_descriptor(ctxt, sel, ctxt->modrm_reg);
}
static int em_lldt(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_LDTR);
}
static int em_invlpg(struct x86_emulate_ctxt *ctxt)
{
int rc;
@ -3560,7 +3569,7 @@ static struct opcode group5[] = {
static struct opcode group6[] = {
DI(Prot, sldt),
DI(Prot, str),
DI(Prot | Priv, lldt),
II(Prot | Priv | SrcMem16, em_lldt, lldt),
DI(Prot | Priv, ltr),
N, N, N, N,
};