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AMDGPU already has a global PASID xarray used for PASID allocation. Allow amdgpu_pasid_alloc() to optionally store the owning DRM file-private object directly. Initial callers pass NULL. A later patch in this series passes the DRM file-private object for DRM PASIDs. This prepares for using: PASID -> fpriv -> VM instead of: PASID -> VM Clear the stored owner from amdgpu_pasid_free_delayed() before waiting for outstanding fences so PASID lookups cannot observe a stale fpriv while the PASID itself is pending delayed release. v6: - Correct the PASID allocator kernel-doc to refer to the XArray cyclic allocator. - Document that PASID owner lookup may return NULL and that the returned fpriv remains valid only while the PASID lock is held. - No code changes. Retain Christian's Reviewed-by tag. v5: - Store NULL instead of xa_mk_value(0) for ownerless PASIDs. - Simplify owner clearing by unconditionally storing NULL. v4: - Add fpriv as an optional parameter to amdgpu_pasid_alloc(). - Drop separate amdgpu_pasid_set_fpriv()/clear_fpriv() helpers. - Clear PASID owner from amdgpu_pasid_free_delayed(). Cc: Alex Deucher <alexander.deucher@amd.com> Suggested-by: Christian König <christian.koenig@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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| drm | ||
| host1x | ||
| ipu-v3 | ||
| nova-core | ||
| tests | ||
| trace | ||
| vga | ||
| buddy.c | ||
| Kconfig | ||
| Makefile | ||