drm/i915: Don't free shared locks while shared

Browse source

We are currently sharing the VM reservation locks across a number of
gem objects with page-table memory. Since TTM will individiualize the
reservation locks when freeing objects, including accessing the shared
locks, make sure that the shared locks are not freed until that is done.
For PPGTT we add an additional refcount, for GGTT we take additional
measures to make sure objects sharing the GGTT reservation lock are
freed at GGTT takedown

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210601074654.3103-3-thomas.hellstrom@linux.intel.com

...

This commit is contained in:

Thomas Hellström 2021-06-01 09:46:41 +02:00 • committed by Matthew Auld

parent 0f4308d524

commit 4d8151ae53

7 changed files with 93 additions and 13 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/gpu/drm/i915/gem/i915_gem_object.c

View file

4

drivers/gpu/drm/i915/gem/i915_gem_object_types.h

View file

19

drivers/gpu/drm/i915/gt/intel_ggtt.c

View file

45

drivers/gpu/drm/i915/gt/intel_gtt.c

View file

28

drivers/gpu/drm/i915/gt/intel_gtt.h

View file

2

drivers/gpu/drm/i915/gt/intel_ppgtt.c

View file

5

drivers/gpu/drm/i915/i915_drv.c

View file