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drm/xe: Allow freeing of a managed bo

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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
This commit is contained in:
John Harrison 2025-09-10 14:02:34 -07:00
parent acf01c79f0
commit 537773db91
2 changed files with 6 additions and 0 deletions
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5
drivers/gpu/drm/xe/xe_bo.c
View File

@ -2629,6 +2629,11 @@ struct xe_bo *xe_managed_bo_create_pin_map(struct xe_device *xe, struct xe_tile
return bo;
}
void xe_managed_bo_unpin_map_no_vm(struct xe_bo *bo)
{
devm_release_action(xe_bo_device(bo)->drm.dev, __xe_bo_unpin_map_no_vm, bo);
}
struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
const void *data, size_t size, u32 flags)
{

1
drivers/gpu/drm/xe/xe_bo.h
View File

@ -116,6 +116,7 @@ xe_bo_create_pin_map_at_novm(struct xe_device *xe, struct xe_tile *tile,
u32 flags, u64 alignment, bool intr);
struct xe_bo *xe_managed_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile,
size_t size, u32 flags);
void xe_managed_bo_unpin_map_no_vm(struct xe_bo *bo);
struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile,
const void *data, size_t size, u32 flags);
int xe_managed_bo_reinit_in_vram(struct xe_device *xe, struct xe_tile *tile, struct xe_bo **src);