kernel/linux.git/drivers/gpu/drm/amd/amdkfd/kfd_process.c, branch linux-4.20.y

drm/amdkfd: Release an acquired process vm

2018-08-29T17:35:00+00:00

For compute vm acquired from amdgpu, vm.pasid is managed by kfd. Decouple pasid from such vm on process destroy to avoid duplicate pasid release. Signed-off-by: Oak Zeng Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: Set pasid for compute vm (v2)

2018-08-29T17:34:49+00:00

To make a amdgpu vm to a compute vm, the old pasid will be freed and replaced with a pasid managed by kfd. Kfd can't reuse original pasid allocated by amdgpu because kfd uses different pasid policy with amdgpu. For example, all graphic devices share one same pasid in a process. v2: rebase (Alex) Signed-off-by: Oak Zeng Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdkfd: Fix error codes in kfd_get_process

2018-07-12T02:32:47+00:00

Return ERR_PTR(-EINVAL) if kfd_get_process fails to find the process. This fixes kernel oopses when a child process calls KFD ioctls with a file descriptor inherited from the parent process. Signed-off-by: Wei Lu Reviewed-by: Felix Kuehling Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay

drm/amdkfd: Implement doorbell allocation for SOC15

2018-04-10T21:33:05+00:00

Allocate doorbells according to the doorbell routing information on SOC15 ASICs (Vega10 and later). On older ASICs we continue to use the queue_id as the doorbell ID to maintain compatibility with the Thunk. Signed-off-by: Shaoyun Liu Signed-off-by: Felix Kuehling Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Clean up KFD_MMAP_ offset handling

2018-04-10T21:33:04+00:00

Use bit-rotate for better clarity and remove _MASK from the #defines as these represent mmap types. Centralize all the parsing of the mmap offset in kfd_mmap and add device parameter to doorbell and reserved_mem map functions. Encode gpu_id into upper bits of vm_pgoff. This frees up the lower bits for encoding the the doorbell ID on Vega10. Signed-off-by: Harish Kasiviswanathan Signed-off-by: Felix Kuehling Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Add quiesce_mm and resume_mm to kgd2kfd_calls

2018-03-23T19:32:32+00:00

These interfaces allow KGD to stop and resume all GPU user mode queue access to a process address space. This is needed for handling MMU notifiers of userptrs mapped for GPU access in KFD VMs. Signed-off-by: Felix Kuehling Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Use ordered workqueue to restore processes

2018-03-23T19:30:36+00:00

Restoring multiple processes concurrently can lead to live-locks where each process prevents the other from validating all its BOs. v2: fix duplicate check of same variable Signed-off-by: Felix Kuehling Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Add TC flush on VMID deallocation for Hawaii

2018-03-15T21:27:50+00:00

On GFX7 the CP does not perform a TC flush when queues are unmapped. To avoid TC eviction from accessing an invalid VMID, flush it explicitly before releasing a VMID. v2: Fix unnecessary list_for_each_entry_safe v3: Moved allocation to kfd_process_device_init_vm Signed-off-by: Amber Lin Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay

drm/amdkfd: Allocate CWSR trap handler memory for dGPUs

2018-03-15T21:27:49+00:00

Add helpers for allocating GPUVM memory in kernel mode and use them to allocate memory for the CWSR trap handler. v2: Use dev instead of pdd->dev in kfd_process_free_gpuvm v3: * Cleaned up and simplified kfd_process_alloc_gpuvm * Moved allocation for dGPU to kfd_process_device_init_vm Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay

drm/amdkfd: Add per-process IDR for buffer handles

2018-03-15T21:27:48+00:00

Also used for cleaning up on process termination. v2: Refactored cleanup on process termination Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay