Subject: Re: Kernel locks up after calling kernel_execve()

From: "Gerhard Pircher" <[email-masked]>
Date: Thu, 15 Nov 2007 09:48:19 +0100

-------- Original-Nachricht --------
> Datum: Thu, 15 Nov 2007 08:54:32 +1100
> Von: Paul Mackerras <[email-masked]>
> An: "Gerhard Pircher" <[email-masked]>
> CC: [email-masked], [email-masked]
> Betreff: Re: Kernel locks up after calling kernel_execve()

> No it's not just for ppc64.  We had a patch that went in some time ago
> to ensure that the M bit was set on various 32-bit platforms because
> otherwise we got data corruption (due to a small cache in the
> northbridge not being kept coherent with the processor cache).
Ah, I thought this was due to a CPU errata, where L2 cache prefetching
causes data corruption with the coherent bit set to 0.

Gerhard
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