linux-kernel - Re: dma_alloc_coherent() on PPC32: physical addresses above 2G possible?

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Message-ID: <20080720114358.6c88e048@infradead.org>
Date:	Sun, 20 Jul 2008 11:43:58 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: dma_alloc_coherent() on PPC32: physical addresses above 2G
 possible?

On Sun, 20 Jul 2008 20:36:23 +0200
Stefan Richter <stefanr@...6.in-berlin.de> wrote:

> PS:  I don't want to set the DMA mask of this device to
> DMA_31BIT_MASK because that would be detrimental to other functions
> of the device. It's a TI TSB43AB22A FireWire controller.

Hi,

just want to mention that you can set the coherent mask separately from
the generic mask... is that sufficient for your load?
(you can even set it just for this allocation..)

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