Bug#602418: Bug#604096: Bug#601341: Bug#602418: #601341, #602418 and #604096 seem to be duplicates

[Ian Campbell <ijc@hellion.org.uk>]

(dropping all but one of the bugs from the cc, since they are now
merged)

On Wed, 2010-12-22 at 15:11 -0800, Jeremy Fitzhardinge wrote: 
> On 12/22/2010 10:35 AM, Konrad Rzeszutek Wilk wrote:
> >>         d541daf6b956 pvops: make pte_flags() go via pvops
> > I've only hit that on a machine with a P4 Prescott with AGP. On nothing else - so
> > it might not be required... If you don't have it you just get a bunch of WARN.
> 
> It is technically necessary, but in practice it will only matter if
> things modify ptes with PAT bits set in them.  I'm in two minds about
> it; we really need to benchmark the effect to see how much it matters.

Thanks. I think I'll leave it out of the first version I commit to the
Debian kernel, I can always re-add it later if it turns out to be
necessary.

Ian.
-- 
Ian Campbell

Marvelous!  The super-user's going to boot me!
What a finely tuned response to the situation!

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