From: "Dave Airlie" <airlied@gmail.com>
To: "Andi Kleen" <andi@firstfloor.org>
Cc: "Nick Piggin" <nickpiggin@yahoo.com.au>,
"David Chinner" <dgc@sgi.com>,
"Jeremy Fitzhardinge" <jeremy@goop.org>,
xfs@oss.sgi.com, Xen-devel <xen-devel@lists.xensource.com>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Mark Williamson" <mark.williamson@cl.cam.ac.uk>,
"Morten Bøgeskov" <xen-users@morten.bogeskov.dk>,
xfs-masters@oss.sgi.com
Subject: Re: Interaction between Xen and XFS: stray RW mappings
Date: Sun, 21 Oct 2007 22:17:45 +1000 [thread overview]
Message-ID: <21d7e9970710210517y585bf5a2lda34f0ae2d8b6183@mail.gmail.com> (raw)
In-Reply-To: <20071015125407.GA13329@one.firstfloor.org>
On 10/15/07, Andi Kleen <andi@firstfloor.org> wrote:
> > Hmm, OK. It looks like DRM vmallocs memory (which gives highmem).
>
> I meant I'm not sure if it uses that memory uncached. I admit
> not quite understanding that code. There used to be at least
> one place where it set UC for an user mapping though.
Currently the only DRM memory handed to userspace is vmalloc_32 in drm_scatter.c
I notice the VIA driver does its own vmalloc for dmablit, so it may
have an issue with this if highmem is involved.
This will change with the upcoming memory manager so I'll need to
investigate it a bit perhaps...
Dave.
next prev parent reply other threads:[~2007-10-21 12:17 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-12 16:58 Jeremy Fitzhardinge
2007-10-12 17:08 ` Jeremy Fitzhardinge
2007-10-14 22:56 ` David Chinner
2007-10-14 23:12 ` Jeremy Fitzhardinge
2007-10-14 23:33 ` David Chinner
2007-10-15 4:15 ` Nick Piggin
2007-10-15 0:57 ` Jeremy Fitzhardinge
2007-10-15 7:26 ` Nick Piggin
2007-10-15 3:42 ` Jeremy Fitzhardinge
2007-10-15 4:11 ` David Chinner
2007-10-15 4:18 ` Jeremy Fitzhardinge
2007-10-15 4:25 ` David Chinner
2007-10-15 8:31 ` [xfs-masters] " Christoph Hellwig
2007-10-22 3:18 ` dean gaudet
2007-10-22 3:34 ` Jeremy Fitzhardinge
2007-10-22 4:28 ` dean gaudet
2007-10-22 4:39 ` Nick Piggin
2007-10-22 18:37 ` Jeremy Fitzhardinge
2007-10-22 18:32 ` Jeremy Fitzhardinge
2007-10-22 13:47 ` Andi Kleen
2007-10-22 18:40 ` Jeremy Fitzhardinge
2007-10-22 19:07 ` Andi Kleen
2007-10-22 19:11 ` Jeremy Fitzhardinge
2007-10-22 22:32 ` David Chinner
2007-10-22 23:35 ` Andi Kleen
2007-10-23 0:16 ` Zachary Amsden
2007-10-23 0:36 ` David Chinner
2007-10-23 7:04 ` [patch] " David Chinner
2007-10-23 9:30 ` Andi Kleen
2007-10-23 12:41 ` David Chinner
2007-10-23 14:33 ` Jeremy Fitzhardinge
2007-10-24 4:36 ` [PATCH] Allow lazy unmapping by taking extra page references V2 David Chinner
2007-10-24 5:08 ` Jeremy Fitzhardinge
2007-10-24 21:48 ` [PATCH] Allow lazy unmapping by taking extra page references V3 David Chinner
2007-10-24 22:46 ` Jeremy Fitzhardinge
2007-10-24 23:21 ` David Chinner
2007-10-23 9:28 ` Interaction between Xen and XFS: stray RW mappings Andi Kleen
2007-10-15 9:36 ` Andi Kleen
2007-10-15 14:56 ` Nick Piggin
2007-10-15 11:07 ` Andi Kleen
2007-10-15 11:28 ` Nick Piggin
2007-10-15 12:54 ` Andi Kleen
2007-10-21 12:17 ` Dave Airlie [this message]
2007-10-21 22:16 ` Benjamin Herrenschmidt
2007-10-22 9:49 ` Andi Kleen
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