On Thu, Mar 16, 2017 at 04:15:35PM +0200, Mika Kuoppala wrote: > Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes: > > > When manually overwriting the HWS, rather than assume irq_seqno_barrier > > does the right thing, we can explicitly flush the cacheline instead. > > This avoids us calling the engine->irq_seqno_barrier() from an illegal > > context: > > > > [ 1472.651797] BUG: scheduling while atomic: migration/0/11/0x00000002 > > [ 1472.651807] Modules linked in: ctr ccm arc4 snd_hda_codec_hdmi bnep rfcomm iwldvm snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel mac80211 snd_hda_codec snd_hda_core snd_pcm dm_multipath snd_hwdep intel_powerclamp coretemp snd_seq_midi crct10dif_pclmul snd_seq_midi_event crc32_pclmul iwlwifi ghash_clmulni_intel btusb snd_rawmidi btrtl aesni_intel btbcm aes_x86_64 crypto_simd btintel cryptd glue_helper bluetooth snd_seq cfg80211 snd_timer snd_seq_device intel_ips binfmt_misc snd mei_me soundcore mei dm_mirror dm_region_hash dm_log i915 intel_gtt i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea prime_numbers e1000e drm ahci libahci > > [ 1472.651897] CPU: 0 PID: 11 Comm: migration/0 Tainted: G U 4.11.0-rc1+ #203 > > [ 1472.651899] Hardware name: LENOVO 514328U/514328U, BIOS 6QET44WW (1.14 ) 04/20/2010 > > [ 1472.651900] Call Trace: > > [ 1472.651913] dump_stack+0x63/0x90 > > [ 1472.651922] __schedule_bug+0x5d/0x6b > > [ 1472.651930] __schedule+0x46a/0x5f0 > > [ 1472.651934] schedule+0x38/0x90 > > [ 1472.651938] schedule_hrtimeout_range_clock+0x85/0x110 > > [ 1472.651945] ? hrtimer_init+0x10/0x10 > > [ 1472.651949] schedule_hrtimeout_range+0xe/0x10 > > [ 1472.651952] usleep_range+0x4d/0x60 > > [ 1472.652037] gen5_seqno_barrier+0x13/0x20 [i915] > > [ 1472.652101] intel_engine_init_global_seqno+0xd7/0x160 [i915] > > [ 1472.652160] __i915_gem_set_wedged_BKL+0xa0/0x180 [i915] > > [ 1472.652166] multi_cpu_stop+0xbb/0xe0 > > [ 1472.652170] ? cpu_stop_queue_work+0x90/0x90 > > [ 1472.652174] cpu_stopper_thread+0x82/0x110 > > [ 1472.652179] smpboot_thread_fn+0x137/0x190 > > [ 1472.652184] kthread+0xf7/0x130 > > [ 1472.652187] ? sort_range+0x20/0x20 > > [ 1472.652191] ? kthread_park+0x90/0x90 > > [ 1472.652195] ret_from_fork+0x2c/0x40 > > > > Testcase: igt/gem_eio #ilk > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > > Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx> Ta, pushed to keep CI busy (proving the sporadic incompletes are gone). -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
