Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/xe: Allow freeing of a managed bo
If a bo is created via xe_managed_bo_create_pin_map() then it cannot be
freed by the driver using xe_bo_unpin_map_no_vm(), or indeed any other
existing function. The DRM layer will still have a pointer stashed
away for later freeing, causing a invalid memory access on driver
unload. So add a helper for releasing the DRM action as well.
v2: Drop 'xe' parameter (review feedbak from Michal W)
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://lore.kernel.org/r/20250910210237.603576-4-John.C.Harrison@Intel.com
+6
+5
drivers/gpu/drm/xe/xe_bo.c
+5
drivers/gpu/drm/xe/xe_bo.c
···
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return bo;
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}
2631
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+
void xe_managed_bo_unpin_map_no_vm(struct xe_bo *bo)
2633
+
{
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+
devm_release_action(xe_bo_device(bo)->drm.dev, __xe_bo_unpin_map_no_vm, bo);
2635
+
}
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+
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struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
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const void *data, size_t size, u32 flags)
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{
+1
drivers/gpu/drm/xe/xe_bo.h
+1
drivers/gpu/drm/xe/xe_bo.h
···
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u32 flags, u64 alignment, bool intr);
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struct xe_bo *xe_managed_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile,
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size_t size, u32 flags);
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+
void xe_managed_bo_unpin_map_no_vm(struct xe_bo *bo);
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struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
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const void *data, size_t size, u32 flags);
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int xe_managed_bo_reinit_in_vram(struct xe_device *xe, struct xe_tile *tile, struct xe_bo **src);