From: Christoph Hellwig <hch@infradead.org>
To: Rik van Riel <riel@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Keir Fraser <Keir.Fraser@cl.cam.ac.uk>,
linux-kernel@vger.kernel.org, akpm@osdl.org, kurt@garloff.de,
Ian.Pratt@cl.cam.ac.uk, Christian.Limpach@cl.cam.ac.uk
Subject: Re: [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups
Date: Wed, 16 Mar 2005 18:10:42 +0000 [thread overview]
Message-ID: <20050316181042.GA26788@infradead.org> (raw)
In-Reply-To: <Pine.LNX.4.61.0503160959530.4104@chimarrao.boston.redhat.com>
On Wed, Mar 16, 2005 at 10:01:07AM -0500, Rik van Riel wrote:
> In the case of AGP, the AGPGART effectively _is_ the
> IOMMU. Calculating the addresses right for programming
> the AGPGART is probably worth fixing.
Well, it's a half-assed one. And some systems have a real one.
But the real problem is that virt_to_bus doesn't exist at all
on architectures like ppc64, and this patch touches files like
generic.c and backend.c that aren't PC-specific. So you
effectively break agp support for them.
next prev parent reply other threads:[~2005-03-16 18:10 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-16 11:48 [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups Keir Fraser
2005-03-16 14:31 ` Christoph Hellwig
2005-03-16 14:58 ` Keir Fraser
2005-03-16 15:01 ` Rik van Riel
2005-03-16 18:10 ` Christoph Hellwig [this message]
2005-03-16 18:35 ` Keir Fraser
2005-03-16 18:42 ` Jesse Barnes
2005-03-16 19:08 ` Keir Fraser
2005-03-16 19:06 ` Christoph Hellwig
2005-03-16 19:11 ` Keir Fraser
2005-03-16 17:40 ` Alan Cox
2005-03-16 17:54 ` Jesse Barnes
2005-03-16 21:24 ` Paul Mackerras
2005-03-16 22:06 ` Jesse Barnes
2005-03-16 23:55 ` Rik van Riel
2005-03-17 0:39 ` Paul Mackerras
2005-03-17 1:05 ` Tupshin Harper
2005-03-17 3:44 ` Rik van Riel
2005-03-17 4:42 ` Christoph Hellwig
2005-03-17 4:58 ` Rik van Riel
2005-03-17 9:16 ` Keir Fraser
2005-03-17 9:34 ` Paul Mackerras
2005-03-17 10:56 ` Keir Fraser
2005-03-19 10:07 ` Eric W. Biederman
2005-03-19 10:56 ` Christian Limpach
2005-03-19 13:01 ` Keir Fraser
2005-03-17 13:53 ` Alan Cox
2005-03-18 0:16 ` Paul Mackerras
2005-03-18 4:23 ` Rik van Riel
2005-03-18 9:05 ` Keir Fraser
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