On Mon, Aug 7, 2017 at 6:34 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > Quoting Daniel Vetter (2017-08-07 17:26:56) >> On Fri, Aug 04, 2017 at 06:05:10PM +0100, Chris Wilson wrote: >> > Quoting Daniel Vetter (2017-08-04 17:07:22) >> > > We now have full (or a lot at least) igt running in beta CI, and snb >> > > blt hangs are really unhappy: >> > > >> > > - drv_hangman@error-state-capture-blt and gem_exec_capture@capture-blt >> > > reliably result in insta-machine death when we try to reset the gpu, >> > > both on the CI snb and the one I have here. >> > > >> > > - Other testcases also randomly (and sometimes rather rarely) die on >> > > snb. >> > > >> > > We can't use the endless batch because that results in a reset failure >> > > and wedged gpu, so also not really better. >> > >> > It shouldn't be the recursion, but the invalid instruction we use to try >> > and trigger the hang quicker (otherwise hangcheck may see the advancing >> > ACTHD and give us longer to escape the loop). >> > >> > In gem_exec_capture we shouldn't even need that invalid instruction, we >> > just need the busy batch as we pull the trigger ourselves, and if that >> > fails to reset a simple recursive batch we have some issues to resolve. >> >> Endless loop for haning results in a reset failure on blt as described in >> the commit message. We end up with a permanent and unrecoverable -EIO, >> which is as deadly to CI as outright killing the machine. > > No, it doesn't. snb-gt1 exhibiting the machine death on invalid blt > instruction as reported, after fixes: Well my gt2 disagreed, but I guess we can push your patches to igt and then ask CI whether we need more. -Daniel > > Subtest error-state-basic: SUCCESS (0.001s) > Subtest error-state-capture-render: SUCCESS (7.740s) > Subtest error-state-capture-bsd: SUCCESS (6.024s) > Test requirement not met in function test_error_state_capture, file drv_hangman.c:187: > Test requirement: gem_has_ring(device, ring_id) > Subtest error-state-capture-bsd1: SKIP (0.000s) > Test requirement not met in function test_error_state_capture, file drv_hangman.c:187: > Test requirement: gem_has_ring(device, ring_id) > Subtest error-state-capture-bsd2: SKIP (0.000s) > Subtest error-state-capture-blt: SUCCESS (13.965s) > Test requirement not met in function test_error_state_capture, file drv_hangman.c:187: > Test requirement: gem_has_ring(device, ring_id) > Subtest error-state-capture-vebox: SKIP (0.000s) > > Subtest capture-render: SUCCESS (0.003s) > Test requirement not met in function __real_main175, file gem_exec_capture.c:202: > Test requirement: gem_can_store_dword(fd, e->exec_id | e->flags) > Subtest capture-bsd: SKIP (0.000s) > Test requirement not met in function gem_require_ring, file ioctl_wrappers.c:1642: > Test requirement: gem_has_ring(fd, ring) > Subtest capture-bsd1: SKIP (0.000s) > Test requirement not met in function gem_require_ring, file ioctl_wrappers.c:1642: > Test requirement: gem_has_ring(fd, ring) > Subtest capture-bsd2: SKIP (0.000s) > Subtest capture-blt: SUCCESS (0.002s) > Test requirement not met in function gem_require_ring, file ioctl_wrappers.c:1642: > Test requirement: gem_has_ring(fd, ring) > Subtest capture-vebox: SKIP (0.000s) > > -Chris -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
