[Bug 108735] [CI][BAT] igt at drv_selftest@live_hangcheck - _igt_reset_evict_vma timed out

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108735

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
Seems similar to:

commit d6fee0dee09317d5e83e9b855316cb779dd679cf
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Aug 14 11:40:56 2018 +0100

    drm/i915: Kick waiters on resetting legacy rings

    This reapplies commit 39f3be162c46 ("drm/i915: Kick waiters on resetting
    legacy rings") after the improved gem_eio was run across all machines we
    found that gen3 and early gen4 still lost the immediate interrupt
    following reset, and the HWSTAM w/a applied to gen6+ is inadequate.

    Unlike the later gen, on gen3/4 the principle (and only tests to fail so
    far) are the wait vs reset test cases, whereas the reset stress case
    works fine (which was the predominantly failing case for gen6+). That is
    enough to suggest the underlying issue is sufficiently different to
    support the difference in HWSTAM efficacy.

    Testcase: igt/gem_eio/wait-10ms
    References: 39f3be162c46 ("drm/i915: Kick waiters on resetting legacy
rings")
    References: a69ab52b0358 ("drm/i915: Remove extra waiter kick on legacy
resets")
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Matthew Auld <matthew.auld at intel.com>
    Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180814104056.27001-1-chris@chris-wilson.co.uk

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20181126/ff0d3d1b/attachment.html>