Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointerdereference

[Christian Kujau]

On Fri, 28 Mar 2008, BjÃrn Steinbrink wrote:
> > Subject: x86: fix prefetch workaround
> > From: Ingo Molnar <mingo@xxxxxxx>
> > Date: Thu Mar 27 15:58:28 CET 2008
> >
> > some early Athlon XP's and Opterons generate bogus faults on prefetch
>                    ^^
>
> Umh, XP? Didn't you say X2 above? And looking at the patch, X2 seems
> more plausible as well, I don't think that the XP supported the NX bit,
> did it?

Hm, would be a shame because I have an XP 2600+. /proc/cpuinfo tells me:

flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr mca cmov pat pse36 
mmx fxsr sse syscall mmxext 3dnowext 3dnow ts

...no NX in there. I wonder why this (already applied) patch should do 
anything on my box at all.

Thanks,
C.
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