On 26/09/16 16:25, Jan Beulich wrote:
On 26.09.16 at 15:40, wrote:
>> On 21/09/16 10:05, Jan Beulich wrote:
>>> - Instead of #NP, #SS needs to be raised for non-present descriptors.
>>> - Loading a null selector is fine in 64-bit mode at CPL != 3, as long
>>> as RPL == CPL.
>>> - Don't lose
>>> On 26.09.16 at 15:40, wrote:
> On 21/09/16 10:05, Jan Beulich wrote:
>> - Instead of #NP, #SS needs to be raised for non-present descriptors.
>> - Loading a null selector is fine in 64-bit mode at CPL != 3, as long
>> as RPL == CPL.
>> - Don't lose the low two selector bits on null selector
>>> On 26.09.16 at 15:40, wrote:
> On 21/09/16 10:05, Jan Beulich wrote:
>> @@ -1248,7 +1254,6 @@ protmode_load_seg(
>>
>> dpl = (desc.b >> 13) & 3;
>> rpl = sel & 3;
>
> ... it occurs to me that the calculation of rpl can be moved up to its
> declaration, which allows you to check (c
On 21/09/16 10:05, Jan Beulich wrote:
> - Instead of #NP, #SS needs to be raised for non-present descriptors.
> - Loading a null selector is fine in 64-bit mode at CPL != 3, as long
> as RPL == CPL.
> - Don't lose the low two selector bits on null selector loads (also
> applies to %ds, %es, %fs
