[RFC PATCH] drm/vgem: virtual GEM provider

[Adam Jackson]

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