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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-08-22 12:05:17 +0100 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-08-30 12:17:22 -0700 |
| commit | fa3722f6496640b472bed1613e76da325211d757 (patch) | |
| tree | 4a138141823b33562cb02b1bb67b50ef5c0cbb88 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 18db229d30cd19c987885b79b90344ae061e870e (diff) | |
| download | linux-fa3722f6496640b472bed1613e76da325211d757.tar.gz | |
drm/i915: Ignore duplicate VMA stored within the per-object handle LUT
By using drm_gem_flink/drm_gem_open on an object using the same fd, it
is possible for a client to create multiple handles pointing to the same
object (tied to the same contexts and VMA), as exemplified by
igt::gem_handle_to_libdrm_bo(). Since this duplication has been possible
since forever, we cannot assume that the handle:(fpriv, object) is
unique and so must handle the multiple users of a single VMA.
v2: Added commentary noise.
Testcase: igt/gem_close
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102355
Fixes: d1b48c1e7184 ("drm/i915: Replace execbuf vma ht with an idr")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170822110517.22277-3-chris@chris-wilson.co.uk
Tested-by: Marta Lofstedt <marta.lofstedt@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry-picked from commit 3ffff01749928ea5ffdae2cecad561898c3b0f71)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
0 files changed, 0 insertions, 0 deletions