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SubjectRe: Possible dcache BUG
On Thu, Aug 05, 2004 at 09:26:10AM -0700, Linus Torvalds wrote:
>
> Anyway, one other thing that makes me worry is the fact that Gene
> apparently has a K7. One of the things AMD has gotten wrong several times
> is prefetching, and it so happens that the dcache code is one of the users
> of the prefetch instruction. prude_dcache() in particular.
>
> So I'm also entertaining the notion that there's an actual prefetch data
> corruption, not just the known AMD bug with occasional spurious page
> faults. Who else has seen the problem? What CPU's are involved?
>
> Linus

Assuming that what I was seeing was the same problem...

chris@peace:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Celeron (Coppermine)
stepping : 10
cpu MHz : 1002.487
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de tsc msr pae mce cx8 sep mtrr pge mca cmov
pat pse36 mmx fxsr sse
bogomips : 1982.46


BTW, a recent oops from wli looked similar, but I don't think he's
spoken up in this thread.

He seems busy tracking down other things.

-chris

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