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SubjectRe: 2.6.26, PAT and AMD family 6
On Wed, 07 May 2008 16:09:05 +0200
Rene Herman <rene.herman@keyaccess.nl> wrote:


[as for which cpus]

The errata docs have these errata, at least for Intel I know they're
there. We can add back older cpus over time, but again.. think of it as
a risk/reward thing ;( Right now, breaking all kinds of well working
older systems without benefits on the upside..... that's not very
popular on lkml. Once PAT is rock solid I hope we can relax this check
greatly...

> A blacklist would be a better idea I feel, but in ANY case I think
> it's really bad form to clear the feature flag. They are provided by
> hardware; if arch/x86/mm/pat.c won't risk running except on a select
> few tested models, whatever, but my /proc/cpuinfo shouldn't be lying
> to me.

we filter those for all kinds of things already, sorry.
What good is showing "pat" if "pat" isn't deemed usable (yet)????
Now *that* is deception :)
>
> Rene.


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