On Wed, Mar 21, 2018 at 4:13 AM, Christian König < ckoenig.leichtzumerken at gmail.com> wrote: > Am 21.03.2018 um 06:08 schrieb Marek Olšák: > > On Tue, Mar 20, 2018 at 4:16 PM, Christian König <christian.koenig at amd.com > > wrote: > >> That's what I meant with use up the otherwise unused VRAM. I don't see >> any disadvantage of always setting GTT as second domain on APUs. >> >> My assumption was that we dropped this in userspace for displayable >> surfaces, but Marek proved that wrong. >> >> So what we should do is actually to add GTT as fallback to all BOs on >> APUs in Mesa and only make sure that the kernel is capable of handling GTT >> with optimal performance (e.g. have user huge pages etc..). >> > > VRAM|GTT is practically as good as GTT. VRAM with BO priorities and > eviction throttling is the true "VRAM|GTT". > > I don't know how else to make use of VRAM intelligently. > > > Well why not set VRAM|GTT as default on APUs? That should still save quite > a bunch of moves even with throttling. > I explained why: VRAM|GTT is practically as good as GTT. > > I mean there really shouldn't be any advantage to use VRAM any more except > that we want to use it up as long as it is available. > Why are you suggesting to use VRAM|GTT then? Let's just only use GTT on all APUs. Marek -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20180321/6654e8ea/attachment.html>
