[Bug 111891] [CI][SHARDS] igt at gem_mmap_gtt@basic-small-copy|igt at gem_exec_basic@gtt-rcs0| - dmesg-warn - WARNING: possible circular locking dependency detected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111891

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
Note while the full-ppgtt lockdep was fixed by

commit 2850748ef8763ab46958e43a4d1c445f29eeb37d
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 4 14:39:58 2019 +0100

    drm/i915: Pull i915_vma_pin under the vm->mutex

here with the aliasing-ppgtt conflating with the ggtt->mutex, it is not so
simple.

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