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drm: Unamp the entire device address space on device unplug

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Invalidate all BOs CPU mappings once device is removed.

v3: Move the code from TTM into drm_dev_unplug

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/414809/
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Andrey Grodzovsky 2021-01-18 16:01:11 -05:00 committed by Christian König
parent 36b73b051c
commit b9d4efa8f9
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_drv.c
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@ -469,6 +469,9 @@ void drm_dev_unplug(struct drm_device *dev)
synchronize_srcu(&drm_unplug_srcu);
drm_dev_unregister(dev);
/* Clear all CPU mappings pointing to this device */
unmap_mapping_range(dev->anon_inode->i_mapping, 0, 0, 1);
}
EXPORT_SYMBOL(drm_dev_unplug);