Quoting Matthew Auld (2018-07-26 13:26:08) > On 19 July 2018 at 20:47, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > > On older HW, gen2/3, fence registers are used for detiling GPU commands > > and as such changing those registers requires serialisation with the > > requests on the GPU. Anything running on the GPU is subject to a hang, > > and so we must be able to recover cleanly in the middle of a stuck wait > > on a fence register. > > > > We can simulate using the fence on the GPU simply by marking the fence > > as active on the request for this vma, the interface being common to all > > gen, thus broadening the test. > > > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > > Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> > Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> Ta, this test has proven itself quite useful at picking out some of the nasty deadlocks in trying to make reset BKLless. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
