kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c, branch v6.12.80

drm/amdgpu: prevent immediate PASID reuse case

2026-04-02T11:09:45+00:00

commit 14b81abe7bdc25f8097906fc2f91276ffedb2d26 upstream. PASID resue could cause interrupt issue when process immediately runs into hw state left by previous process exited with the same PASID, it's possible that page faults are still pending in the IH ring buffer when the process exits and frees up its PASID. To prevent the case, it uses idr cyclic allocator same as kernel pid's. Signed-off-by: Eric Huang Reviewed-by: Christian König Signed-off-by: Alex Deucher (cherry picked from commit 8f1de51f49be692de137c8525106e0fce2d1912d) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Make enforce_isolation setting per GPU

2024-08-16T18:27:45+00:00

This commit makes enforce_isolation setting to be per GPU and per partition by adding the enforce_isolation array to the adev structure. The adev variable is set based on the global enforce_isolation module parameter during device initialization. In amdgpu_ids.c, the adev->enforce_isolation value for the current GPU is used to determine whether to enforce isolation between graphics and compute processes on that GPU. In amdgpu_ids.c, the adev->enforce_isolation value for the current GPU and partition is used to determine whether to enforce isolation between graphics and compute processes on that GPU and partition. This allows the enforce_isolation setting to be controlled individually for each GPU and each partition, which is useful in a system with multiple GPUs and partitions where different isolation settings might be desired for different GPUs and partitions. v2: fix loop in amdgpu_vmid_mgr_init() (Alex) Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Signed-off-by: Alex Deucher Suggested-by: Christian König

drm/amdgpu: handle enforce isolation on non-0 gfxhub

2024-08-16T18:27:28+00:00

Some chips have more than one gfxhub so check if we are a gfxhub rather than just gfxhub 0. Acked-by: Srinivasan Shanmugam Signed-off-by: Alex Deucher

drm/amdgpu: reject gang submit on reserved VMIDs

2024-07-08T20:50:53+00:00

A gang submit won't work if the VMID is reserved and we can't flush out VM changes from multiple engines at the same time. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: fix using the reserved VMID with gang submit

2024-06-19T16:48:00+00:00

We need to ensure that even when using a reserved VMID that the gang members can still run in parallel. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: Remove usage of the deprecated ida_simple_xx() API

2024-01-18T20:42:13+00:00

ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove(). Note that the upper limit of ida_simple_get() is exclusive, but the one of ida_alloc_range() is inclusive. So a -1 has been added when needed. Signed-off-by: Christophe JAILLET Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: remove unused parameter in amdgpu_vmid_grab_idle

2023-08-30T19:51:17+00:00

amdgpu_vm is not used in amdgpu_vmid_grab_idle. Signed-off-by: Yifan Zhang Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add option params to enforce process isolation between graphics and compute

2023-06-09T16:49:48+00:00

enforce process isolation between graphics and compute via using the same reserved vmid. v2: remove params "struct amdgpu_vm *vm" from amdgpu_vmid_alloc_reserved and amdgpu_vmid_free_reserved. Signed-off-by: Chong Li Reviewed-by: Christian Koenig Signed-off-by: Alex Deucher

drm/amdgpu: move vmhub out of amdgpu_ring_funcs (v4)

2023-04-14T17:47:49+00:00

It looks better to place this field in ring structure. Also drop the repeated ring funcs definitions if there's no difference except for vmhub field. v2: rename the field to vm_hub like others (Le) v3: apply the changes to new ip blocks (Hawking) v4: fix vcn sw ring (Alex) Signed-off-by: Le Ma Reviewed-by: Christian König Reviewed-by: Hawking Zhang Signed-off-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: fix cleaning up reserved VMID on release

2023-01-19T04:13:14+00:00

We need to reset this or otherwise run into list corruption later on. Fixes: e44a0fe630c5 ("drm/amdgpu: rework reserved VMID handling") Signed-off-by: Christian König Reviewed-by: Alex Deucher Tested-by: Candice Li Signed-off-by: Alex Deucher