[Bug 111692] [CI][SHARDS] igt at i915_selftest@live_gem_contexts- dmesg-warn - igt_ctx_exec failed with error -5

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111692

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
I'm betting on it being a resurgence of the PSMI issue,

commit 56c05de6bd773b96deca379370965c49042b5fbf (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Sep 17 20:47:46 2019 +0100

    drm/i915: Extend Haswell GT1 PSMI workaround to all

    A few times in CI, we have detected a GPU hang on our Haswell GT2
    systems with the characteristic IPEHR of 0x780c0000. When the PSMI w/a
    was first introducted, it was applied to all Haswell, but later on we
    found an erratum that supposedly restricted the issue to GT1 and so
    constrained it only be applied on GT1. That may have been a mistake...

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111692
    Fixes: 167bc759e823 ("drm/i915: Restrict PSMI context load w/a to Haswell
GT1")
    References: 2c550183476d ("drm/i915: Disable PSMI sleep messages on all
rings around context switches")
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Acked-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20190917194746.26710-1-chris@chris-wilson.co.uk

One interesting thought though was perhaps it is related to timing changes from
iommu.

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