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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-25 06:43:33 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-25 07:33:57 +0100 |
| commit | 1f2b4a7edbc3b89c27f661b81a699095d922467c (patch) | |
| tree | a24cfaed0007b1a51fc5b7c6cca7c24488892d5a /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | 8f2a1057d6ec217aefb8bf0de6996294452a2577 (diff) | |
| download | linux-1f2b4a7edbc3b89c27f661b81a699095d922467c.tar.gz | |
drm/i915: Allow multiple user handles to the same VM
It was noted that we made the same mistake for VM_ID as for object
handles, whereby we ensured that we only allocated a single handle for
one ppgtt. This has the unfortunate consequence for userspace that they
need to reference count the handles to avoid destroying an active ID. If
we allow multiple handles to the same ppgtt, userspace can freely
unreference any handle they own without fear of destroying the same
handle in use elsewhere.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190425054333.27299-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index f85b75db1f98..2fafa04c45ec 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -397,8 +397,6 @@ struct i915_hw_ppgtt { struct i915_page_directory_pointer pdp; /* GEN8+ */ struct i915_page_directory pd; /* GEN6-7 */ }; - - u32 user_handle; }; struct gen6_hw_ppgtt { |