[Bug 90400] [KBL APL SKL BSW BDW]igt/gem_ppgtt/flink-and-close-vma-leak fails
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Aug 4 07:32:41 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=90400
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #17 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit b1f788c6acb2f34622dd5f4c3d5210c6e3945e78
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Thu Aug 4 07:52:45 2016 +0100
drm/i915: Release vma when the handle is closed
In order to prevent a leak of the vma on shared objects, we need to
hook into the object_close callback to destroy the vma on the object for
this file. However, if we destroyed that vma immediately we may cause
unexpected application stalls as we try to unbind a busy vma - hence we
defer the unbind to when we retire the vma.
v2: Keep vma allocated until closed. This is useful for a later
optimisation, but it is required now in order to handle potential
recursion of i915_vma_unbind() by retiring itself.
v3: Comments are important.
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