-------- Original-Nachricht --------

Datum: Mon, 19 Jan 2009 06:55:06 +1100
Von: Benjamin Herrenschmidt [off-list ref]
An: Gerhard Pircher [off-list ref]
CC: paulus@samba.org, kumar.gala@freescale.com, linuxppc-dev@ozlabs.org
Betreff: Re: [PATCH 9/10] powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED v2

On Sun, 2009-01-18 at 20:43 +0100, Gerhard Pircher wrote:

quoted

I'm pretty sure that the hack for setup_32.c above protects this code in hash_low_32.S/
create_hpte() from being overwritten with nops. But I wonder which other paths exists
in the memory management code to set the coherent flag in PTEs? Any ideas how I
can get it to work without removing _PAGE_COHERENT from _PAGE_BASE?

I'll have a look, could be something with the BAT setup too, and I
haven't modified the 603 code, are you using a 603 ?

No, it's a 7455 (which has CPU_FTR_NEED_COHERENT set in its CPU features).

Thanks!

Gerhard
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