[PATCH] drm/vgem: drop DRIVER_PRIME (v2)

[Rob Clark]

On Thu, May 21, 2015 at 12:10 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Thu, May 21, 2015 at 06:07:30PM +0200, Daniel Vetter wrote:
>> On Thu, May 21, 2015 at 11:58:30AM -0400, Rob Clark wrote:
>> > For actual sharing of buffers with other drivers (ie. actual hardware)
>> > we'll need to pimp things out a bit better to deal w/ caching, multiple
>> > memory domains, etc.  See thread:
>> >
>> >   http://lists.freedesktop.org/archives/dri-devel/2015-May/083160.html
>> >
>> > But for the llvmpipe use-case this isn't a problem.  Nor do we really
>> > need prime/dri3 (dri2 is sufficient).  So until the other issues are
>> > sorted lets remove DRIVER_PRIME.
>> >
>> > v2: also drop the dead code
>> >
>> > Signed-off-by: Rob Clark <robdclark at gmail.com>
>>
>> Yeah I'm ok with this too, but it pretty much means vgem is a thing for
>> llvmpipe only. And then abusing dumb buffers is imo ok too, since I don't
>> care too much what kind of horrors drivers pull of internally.
>
> Ugh. But llvmpipe + dumb buffer is much inferior to SHM.

it is using shmem for it's dumb buffers..  although I noticed it was
mapping writecombine which is probably not what is wanted..

BR,
-R

> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre