[Bug 65387] [HSW] vebox semaphores ignored

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65387

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #14 from lu hua <huax.lu at intel.com> ---
(In reply to comment #12)
> Please retest with Chris' tlb invalidation fix:
> 
> https://patchwork.kernel.org/patch/2839512/

Test with this patch. System randomly hang.
output:
gem_seqno_wrap: gem_seqno_wrap.c:501: preset_run_once: Assertion
`write_seqno(1) == 0' failed.
gem_write:476 failed, ret=-1, errno=5

Call trace:
[  192.720248]  [<ffffffffa00a7e86>] ? i915_gem_reset+0xbd/0x224 [i915]
[  192.721426]  [<ffffffff8122c1b7>] ? kobject_uevent_env+0x3ec/0x413
[  192.722594]  [<ffffffffa00948b0>] ? i915_reset+0x36/0x1a6 [i915]
[  192.723782]  [<ffffffffa009938e>] ? i915_error_work_func+0xba/0x148 [i915]
[  192.724954]  [<ffffffff81045fb6>] ? process_one_work+0x1c1/0x2c8
[  192.726126]  [<ffffffff810441a3>] ? pwq_activate_delayed_work+0x23/0x2e
[  192.727291]  [<ffffffff81046502>] ? worker_thread+0x1d0/0x299
[  192.728455]  [<ffffffff81046332>] ? rescuer_thread+0x24e/0x24e
[  192.729606]  [<ffffffff8104b149>] ? kthread+0xad/0xb5
[  192.730747]  [<ffffffff8104b09c>] ? kthread_freezable_should_stop+0x46/0x46
[  192.731911]  [<ffffffff8145842c>] ? ret_from_fork+0x7c/0xb0
[  192.733078]  [<ffffffff8104b09c>] ? kthread_freezable_should_stop+0x46/0x46
[  192.734223] Code: 48 8b 80 30 03 00 00 48 3b b0 20 22 00 00 48 8d 90 c8 1f
00 00 48 8d 41 a8 48 0f 44 f2 48 8d 97 a0 00 00 00 48 39 d1 75 15 0f 0b <48> 39
70 50 75 05 48 8b 40 30 c3 48 8b 40 58 48 83 e8 58 48 8d
[  192.736800] RIP  [<ffffffffa00a6962>] i915_gem_obj_offset+0x36/0x57 [i915]
[  192.738029]  RSP <ffff880241a79d00>
[  192.739208] CR2: fffffffffffffff8
[  192.740402] ---[ end trace 2840c64b8122deca ]---
[  192.741650] BUG: unable to handle kernel paging request at ffffffffffffffd8

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