drm/i915: Separate GEM context construction and registration to userspace

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In later patches, it became apparent that userspace can see a partially
constructed GEM context and begin using it before it was ready, to much
hilarity. Close this window of opportunity by lifting the registration of
the context with userspace (the insertion of the context into the filp's
idr) to the very end of the CONTEXT_CREATE ioctl.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190321140711.11190-1-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2019-03-21 14:07:08 +00:00

parent 401f147b16

commit 3aa9945a52

7 changed files with 111 additions and 75 deletions

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138

drivers/gpu/drm/i915/i915_gem_context.c

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7

drivers/gpu/drm/i915/i915_gem_gtt.c

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8

drivers/gpu/drm/i915/i915_gem_gtt.h

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2

drivers/gpu/drm/i915/selftests/huge_pages.c

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12

drivers/gpu/drm/i915/selftests/i915_gem_context.c

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2

drivers/gpu/drm/i915/selftests/i915_gem_gtt.c

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17

drivers/gpu/drm/i915/selftests/mock_context.c

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