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drm/amdgpu: Use vm status_lock to protect pt free

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Use vm_status_lock to protect all vm_status state transitions to allow
them to happen without a reservation lock in unlocked page table
updates.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang 2022-09-16 09:30:43 -04:00 committed by Alex Deucher
parent 757eb2bedd
commit c2dbd69e7b
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
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@ -637,7 +637,10 @@ static void amdgpu_vm_pt_free(struct amdgpu_vm_bo_base *entry)
}
ttm_bo_set_bulk_move(&entry->bo->tbo, NULL);
entry->bo->vm_bo = NULL;
spin_lock(&entry->vm->status_lock);
list_del(&entry->vm_status);
spin_unlock(&entry->vm->status_lock);
amdgpu_bo_unref(&entry->bo);
}