KVM: x86 emulator: inject #UD on access to non-existing CR

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Gleb Natapov 2010-03-18 15:20:10 +02:00 committed by Avi Kivity
parent ab8557b2b3
commit 6aebfa6ea7

View file

@ -2520,6 +2520,13 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
c->dst.type = OP_NONE;
break;
case 0x20: /* mov cr, reg */
switch (c->modrm_reg) {
case 1:
case 5 ... 7:
case 9 ... 15:
kvm_queue_exception(ctxt->vcpu, UD_VECTOR);
goto done;
}
c->regs[c->modrm_rm] = ops->get_cr(c->modrm_reg, ctxt->vcpu);
c->dst.type = OP_NONE; /* no writeback */
break;