On Thu, Jul 28, 2016 at 11:55:21AM +0200, Daniel Vetter wrote: > On Wed, Jul 27, 2016 at 12:14:45PM +0100, Chris Wilson wrote: > > Our GPUs impose certain requirements upon buffers that depend upon how > > exactly they are used. Typically this is expressed as that they require > > a larger surface than would be naively computed by pitch * height. > > Normally such requirements are hidden away in the userspace driver, but > > when we accept pointers from strangers and later impose extra conditions > > on them, the original client allocator has no idea about the > > monstrosities in the GPU and we require the userspace driver to inform > > the kernel how many padding pages are required beyond the client > > allocation. > > > > v2: Long time, no see > > v3: Try an anonymous union for uapi struct compatibility > > > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > > Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > > Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > > This is missing the testcase line. Also short link to the > libva/opencl/whatever patches would be good too. Yes, I am waiting on kernel support before merging to the ddx. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
