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drm/amdgpu: rework reserved VMID handling

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Instead of reserving a VMID for a single process allow that many
processes use the reserved ID. This allows for proper isolation
between the processes.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2022-11-25 17:04:25 +01:00
committed by Alex Deucher
parent 053499f7b4
commit e44a0fe630
3 changed files with 25 additions and 31 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h
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@@ -67,7 +67,8 @@ struct amdgpu_vmid_mgr {
unsigned num_ids;
struct list_head ids_lru;
struct amdgpu_vmid ids[AMDGPU_NUM_VMID];
atomic_t reserved_vmid_num;
struct amdgpu_vmid *reserved;
unsigned int reserved_use_count;
};
int amdgpu_pasid_alloc(unsigned int bits);