Re: [PATCH v8 02/12] x86emul: support MOVDIR{I,64B} insns

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 05/05/2020 09:13, Jan Beulich wrote:
> Introduce a new blk() hook, paralleling the rmw() one in a certain way,
> but being intended for larger data sizes, and hence its HVM intermediate
> handling function doesn't fall back to splitting the operation if the
> requested virtual address can't be mapped.
>
> Note that SDM revision 071 doesn't specify exception behavior for
> ModRM.mod == 0b11; assuming #UD here.

Still stale?  It does #UD on current hardware, and will cease to #UD in
the future when the encoding space gets used for something else.

>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> Reviewed-by: Paul Durrant <paul@xxxxxxx>

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>