On 28/09/16 09:08, Jan Beulich wrote:
> @@ -1651,6 +1668,34 @@ x86_decode_onebyte(
> }
>
> static int
> +x86_decode_twobyte(
> +struct x86_emulate_state *state,
> +struct x86_emulate_ctxt *ctxt,
> +const struct x86_emulate_ops *ops)
> +{
> +int rc = X86EMUL_OKAY;
> +
> +
This way we can at least size (and e.g. skip) them if needed, and we
also won't raise the wrong fault due to not having read all relevant
bytes.
This at once adds correct raising of #UD for the three "ud" flavors
(Intel names only "ud2", but AMD names all three of them in their
opcode maps), as
