Hi Christian, I have tested it and it doesn't fix the hangs. (Also, I don't like the patch, because it reverts the behavior I added for userspace buffers.) Marek On Sat, May 10, 2014 at 6:34 PM, Christian König <deathsimple@xxxxxxxxxxx> wrote: > Couldn't reproduce the issue so far. So the attached patch is just a > complete shoot into the dark found by rereading the code, but it might > actually be the problem. > > Please give it a try. > > Going to keep testing in the meantime, > Christian. > > Am 10.05.2014 10:23, schrieb Christian König: > >>> I see hangs with kernel 3.15 and SI under memory pressure, e.g. if I boot >>> with radeon.vramlimit=256 and then run Xonotic timedemo with high settings. >>> I haven't had a chance to bisect it yet, but it might be a similar problem. >> >> Sounds like the same issue to me. Thx for the good test case. >> >>> Any idea what is wrong with it? >> >> Actually I already wondered that it went so smooth without any regression >> so far, didn't noticed the bug in bugzilla.kernel.org yet. >> >>> Some of the tests allocate a lot of MSAA textures and the tests also >>> run in parallel, which creates a lot of memory pressure and probably >>> causes buffer evictions. >> >> Sounds like the underlying problem to me. We probably evict some part of a >> page table without updating the page directory. Going to dig into it today, >> it's probably just a one liner missing somewhere in the VM code. >> >> Christian. >> >> Am 09.05.2014 23:39, schrieb Grigori Goronzy: >>> >>> On 09.05.2014 20:03, Marek Olšák wrote: >>>> >>>> >>>> This commit which first appeared in 3.15-rc1 causes hangs on Bonaire: >>>> [...] >>>> >>>> The simplest way to reproduce the hangs is to run piglit with these >>>> parameters: >>>> -t texelFetch.fs >>>> >>>> Some of the tests allocate a lot of MSAA textures and the tests also >>>> run in parallel, which creates a lot of memory pressure and probably >>>> causes buffer evictions. >>>> >>> >>> I see hangs with kernel 3.15 and SI under memory pressure, e.g. if I boot >>> with radeon.vramlimit=256 and then run Xonotic timedemo with high settings. >>> I haven't had a chance to bisect it yet, but it might be a similar problem. >>> >>> Grigori >> >> > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
