diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-08-27 23:39:08 +0300 |
|---|---|---|
| committer | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-09-01 16:15:01 +0300 |
| commit | c97f082c135210da06a82c373fb660f8bfd57d95 (patch) | |
| tree | 4883749fa9c348a8fe02a47d414ad77d7660a7a0 /include/drm | |
| parent | c302c98da646409d657a473da202f10f417f3ff1 (diff) | |
| download | linux-c97f082c135210da06a82c373fb660f8bfd57d95.tar.xz | |
drm/ttm: Clear all DMA mappings on demand
Used by drivers supporting hot unplug to handle all
DMA IOMMU group related dependencies before the group
is removed during device removal and we try to access
it after free when last device pointer from user space
is dropped.
v3:
Switch to ttm_bo_get_unless_zerom
Iterate bdev for pinned list
Switch to ttm_tt_unpopulate
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210827203910.5565-3-andrey.grodzovsky@amd.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/ttm/ttm_device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h index 03fb44d061e0..07d722950d5b 100644 --- a/include/drm/ttm/ttm_device.h +++ b/include/drm/ttm/ttm_device.h @@ -299,5 +299,6 @@ int ttm_device_init(struct ttm_device *bdev, struct ttm_device_funcs *funcs, struct drm_vma_offset_manager *vma_manager, bool use_dma_alloc, bool use_dma32); void ttm_device_fini(struct ttm_device *bdev); +void ttm_device_clear_dma_mappings(struct ttm_device *bdev); #endif |