From: Ben Widawsky <ben@bwidawsk.net>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 5/5] drm/vgem: properly implement mmap
Date: Thu, 09 Feb 2012 10:18:03 +0100 [thread overview]
Message-ID: <4F338F4B.8090301@bwidawsk.net> (raw)
In-Reply-To: <e0d58a$36t6ug@orsmga002.jf.intel.com>
On 02/09/2012 12:36 AM, Chris Wilson wrote:
> On Thu, 9 Feb 2012 00:19:31 +0100, Ben Widawsky <ben@bwidawsk.net> wrote:
>> Mostly copied from i915 gtt mmaps, this will properly fault in pages as
>> the user tries to use them. The only thing of note are that no
>> prefaulting occurs, so perhaps some kind of madvise will happen later if
>> needed.
>
> What's the goal here? Why not copy the simpler (from the driver
> perspective) CPU mmaps? I presume that this will be required for dmabuf
> in some form?
> -Chris
>
That was what everyone seemed to want from the original RFC. I think
Eric said something about helping out valgrind. I don't recall the
other reasons.
next prev parent reply other threads:[~2012-02-09 9:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-08 23:19 [RFCv2 PATCH 0/5] virtual GEM provider Ben Widawsky
2012-02-08 23:19 ` [PATCH 1/5] drm/vgem: " Ben Widawsky
2012-02-08 23:28 ` Chris Wilson
2012-02-16 13:52 ` Jakob Bornecrantz
2012-02-20 17:10 ` Ben Widawsky
2012-02-21 15:03 ` Adam Jackson
2012-02-21 15:34 ` Dave Airlie
2012-02-21 16:08 ` Adam Jackson
2012-02-21 17:41 ` Ben Widawsky
2012-02-08 23:19 ` [PATCH 2/5] drm/vgem: fops should be separate and constified Ben Widawsky
2012-02-08 23:19 ` [PATCH 3/5] drm/vgem: Add a drm_vgem_gem_object Ben Widawsky
2012-02-08 23:19 ` [PATCH 4/5] drm/vgem: getparam ioctl Ben Widawsky
2012-02-15 21:22 ` Adam Jackson
2012-02-16 7:23 ` Dave Airlie
2012-02-20 17:12 ` Ben Widawsky
2012-02-08 23:19 ` [PATCH 5/5] drm/vgem: properly implement mmap Ben Widawsky
2012-02-08 23:36 ` Chris Wilson
2012-02-09 9:18 ` Ben Widawsky [this message]
2012-02-09 10:20 ` Daniel Vetter
2012-02-14 2:18 ` Eric Anholt
2012-02-14 7:49 ` Dave Airlie
2012-02-14 0:14 ` [RFCv2 PATCH 0/5] virtual GEM provider Adam Jackson
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