* Pallipadi, Venkatesh <venkatesh.pallip...@intel.com> wrote:
> On Sun, 2009-03-01 at 05:48 -0800, Sitsofe Wheeler wrote:
> > On Sun, Mar 01, 2009 at 12:39:48PM +0100, Ingo Molnar wrote:
> > >
> > > Thanks, i've reverted the commit for now. Could you please send
> > > a 'dmesg' from the bootup with the failed driver? By all
> > > likelyhood an ioremap failure causes a driver failure.
> > >
> >
> > See below (drm says it initalized though...):
> >
> > [ 0.000000] Linux version 2.6.29-rc6-00006-g17581ad (@verona) (gcc
> > version 4.2.4) #87 Sun Mar 1 13:42:28 GMT 2009
> > [ 0.000000] KERNEL supported cpus:
> > [ 0.000000] Intel GenuineIntel
> > [ 0.000000] PAT WC disabled due to known CPU erratum.
>
> Looks like PAT is getting disabled on this platform. Can you
> send the output of /proc/cpuinfo please.
Does this mean we failed an ioremap()? We still should not fail
a device ioremap _ever_. We should just fall back to UC and be
done with it. We may emit a warning if we consider it
troublesome, but we should never ever break working drivers
really.
Ingo
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