From: Adam Jackson <ajax@redhat.com>
To: Eric Anholt <eric@anholt.net>, dri-devel@lists.freedesktop.org
Subject: Re: [RFC PATCH] drm/vgem: virtual GEM provider
Date: Tue, 07 Feb 2012 18:32:49 -0500 [thread overview]
Message-ID: <4F31B4A1.8060208@redhat.com> (raw)
In-Reply-To: <20120207232857.GA19150@seagal.amr.corp.intel.com>
On 2/7/12 6:28 PM, Ben Widawsky wrote:
> On Wed, Jan 11, 2012 at 04:04:20PM -0500, Adam Jackson wrote:
>>> If you can, I recommend using the intel gtt mapping type of mmap ioctl,
>>> where it gives you back an offset that you use the mmap syscall on, and
>>> implement the vgem_gem_fault to map its pages, instead. It should avoid
>>> tricking userland tools like valgrind, which really sucks with the
>>> do_mmap()-calling ioctl we have today.
>>
>> That makes sense. Having two paths by which you could hit
>> drm_gem_mmap() seemed weird when I was writing it.
>>
>> I think the clean way of doing that requires exporting at least
>> shmem_fault and possibly some other shmfs details.
>>
>> - ajax
>
> I'm working on this presently unless you've already done it.
Go for it, I've been ratholed getting vesa working again on 1.12.
- ajax
next prev parent reply other threads:[~2012-02-07 23:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-11 19:19 [RFC PATCH] drm/vgem: virtual GEM provider Adam Jackson
2012-01-11 20:16 ` Eric Anholt
2012-01-11 21:04 ` Adam Jackson
2012-02-07 23:28 ` Ben Widawsky
2012-02-07 23:32 ` Adam Jackson [this message]
2012-01-11 20:32 ` Daniel Vetter
2012-01-11 20:54 ` Dave Airlie
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