drm/msm/submit: Move copy_from_user ahead of locking bos

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We cannot switch to using obj->resv for locking without first moving all
the copy_from_user() ahead of submit_lock_objects().  Otherwise in the
mm fault path we aquire mm->mmap_sem before obj lock, but in the submit
path the order is reversed.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>

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Rob Clark 2020-10-23 09:51:08 -07:00

parent 599089c6af

commit 20224d715a

2 changed files with 82 additions and 48 deletions

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3

drivers/gpu/drm/msm/msm_gem.h

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127

drivers/gpu/drm/msm/msm_gem_submit.c

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