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Matthew Auld b129ff30ac drm/qxl: handle NULL bo->resource in move callback

The ttm bo now initially has NULL bo->resource, and leaves the driver
the handle that. However it looks like we forgot to handle that for qxl.
It looks like this will just null-ptr-deref in qxl_bo_move(), if
bo->resource is NULL.

Fix this by calling move_null() if the new resource is TTM_PL_SYSTEM,
otherwise do the multi-hop sequence to ensure can safely call into
ttm_bo_move_memcpy(), since it might also need to clear the memory.
This should give the same behaviour as before.

Fixes: 180253782038 ("drm/ttm: stop allocating dummy resources during BO creation")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208145319.397235-2-matthew.auld@intel.com
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

2023-02-23 10:29:14 +01:00

Kconfig

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Makefile

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qxl_cmd.c

drm/qxl: stop using ttm_bo_wait

2022-12-19 09:50:06 +01:00

qxl_debugfs.c

dma-buf: add DMA_RESV_USAGE_BOOKKEEP v3

2022-04-07 12:53:54 +02:00

qxl_dev.h