[PATCH] drm/vgem: implement virtual GEM

[Zachary Reizner]

ajax: The consumer of this will be software renderers. We're working on one
right now that will be using dma-bufs from userspace.
Daniel: Thanks for your suggestions. I'll work on it and submit a v2.
On Fri Nov 21 2014 at 6:02:45 AM Adam Jackson <ajax at redhat.com> wrote:

> On Thu, 2014-11-20 at 16:26 -0800, Zach Reizner wrote:
> > This patch implements the virtual GEM driver with PRIME sharing which
> > allows vgem to import a gem object from other drivers for the purpose
> > of mmap-ing them to userspace.
>
> The reason I initially wanted this was to get zero-copy llvmpipe, since
> (besides making GLX conformance impossible) the image transfer parts of
> drisw are easily the biggest part of the runtime overhead.  Is there a
> userspace consumer of this anywhere?
>
> - ajax
>
>
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