Re: [Xen-devel] [PATCH 1/2] x86/hvm: Correct the position of the %cs L/D checks

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 14/10/16 11:28, Jan Beulich wrote:
>>>> On 14.10.16 at 12:06, <andrew.cooper3@xxxxxxxxxx> wrote:
>> Contrary to the description in the software manuals, in Long Mode, attempts 
>> to
>> load %cs check that D is not set in combination with L before the present 
>> flag
>> is checked.
>>
>> This can be observed because the L/D check fails with #GP before the presence
>> check failes with #NP
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> But I think it would be worthwhile mentioning that this restores
> things to v1 of what became commit 78ff18c90.

I will update the comment to include this.

~Andrew

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