On 09/04/2014 01:11 PM, Henrique de Moraes Holschuh wrote:
>
> I am worried of uncharted territory, here. I'd actually advocate for not
> enabling the upper four PAT entries on IA-32 at all, unless Windows 9X / XP
> is using them as well. Is this a real concern, or am I being overly
> cautious?
>
It is extremely unlikely that we'd have PAT issues in 32-bit mode and
not in 64-bit mode on the same CPU.
As far as I know, the current blacklist rule is very conservative due to
lack of testing more than anything else.
-hpa
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