linux-kernel - AW: PowerPC PCI DMA issues (prefetch/coherency?)

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Date:	Mon, 22 Jun 2009 16:31:07 +0200
From:	<Sergej.Stepanov@....de>
To:	<chris.pringle@...el.com>, <scottwood@...escale.com>
CC:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: AW: PowerPC PCI DMA issues (prefetch/coherency?)

>The other part of the fix is in asm-powerpc/pgtable32.h. _PAGE_BASE
>needs _PAGE_COHERENT in order to work correctly, and in fact there is
>now a comment in there to that affect in 2.6.29. Backporting that change
>has made it work on 2.6.26. Both this patch, and the fix to head_32.S
>are needed for it to work correctly on older kernels.
>
>Chris

Hello Chris,

sorry for dummy, but if it possible, could you, please, send a corresponding summary patch of backporting you've done for older kernels?
or just summary of that changes once again?

Many thanks

Sergej.--
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