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From: Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
To: "Albert D. Cahalan" <acahalan@cs.uml.edu>,
        davem@redhat.com (David S. Miller)
Subject: Re: PCI DMA to small buffers on cache-incoherent arch
Date: Sun, 9 Jun 2002 08:50:04 +0200
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> For memory --> device DMA:
>
> 1. write back all cache lines affected by the DMA
> 2. start the DMA
> 3. invalidate the above cache lines

Why the third step ? That data should still
be valid.

	Regards
		Oliver
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