amd/amdkfd: Trigger segfault for early userptr unmmapping

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If applications unmap the memory before destroying the userptr, it needs
trigger a segfault to notify user space to correct the free sequence in
VM debug mode.

v2: Send gpu access fault to user space
v3: Report gpu address to user space, remove unnecessary params
v4: update pr_err into one line, remove userptr log info

Signed-off-by: Shane Xiao <shane.xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Shane Xiao 2025-04-23 17:28:50 +08:00 • committed by Alex Deucher

parent 8e320f67d4

commit 2d274bf709

3 changed files with 33 additions and 0 deletions

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12

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

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19

drivers/gpu/drm/amd/amdkfd/kfd_events.c

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2

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

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