kernel/drivers/gpu/drm/amd/amdkfd/kfd_process.c, branch linux-4.17.y

drm/amdkfd: Use ordered workqueue to restore processes

2018-03-23T19:30:36Z

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

2018-03-15T21:27:50Z

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

2018-03-15T21:27:49Z

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

2018-03-15T21:27:48Z

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

drm/amdkfd: Create KFD VMs on demand

2018-03-15T21:27:44Z

Instead of creating all VMs on process creation, create them when a process is bound to a device. This will later allow registering an existing VM from a DRM render node FD at runtime, before the process is bound to the device. This way the render node VM can be used for KFD instead of creating our own redundant VM. Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay

drm/amdkfd: Implement KFD process eviction/restore

2018-02-07T01:32:45Z

When the TTM memory manager in KGD evicts BOs, all user mode queues potentially accessing these BOs must be evicted temporarily. Once user mode queues are evicted, the eviction fence is signaled, allowing the migration of the BO to proceed. A delayed worker is scheduled to restore all the BOs belonging to the evicted process and restart its queues. During suspend/resume of the GPU we also evict all processes to allow KGD to save BOs in system memory, since VRAM will be lost. v2: * Account for eviction when updating of q->is_active in MQD manager Signed-off-by: Harish Kasiviswanathan Signed-off-by: Felix Kuehling Acked-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Add GPUVM virtual address space to PDD

2018-02-07T01:32:44Z

Create/destroy the GPUVM context during PDD creation/destruction. Get VM page table base and program it during process registration (HWS) or VMID allocation (non-HWS). v2: * Used dev instead of pdd->dev in kfd_flush_tlb Signed-off-by: Felix Kuehling Acked-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Centralize IOMMUv2 code and make it conditional

2017-12-09T00:22:12Z

dGPUs work without IOMMUv2. Make IOMMUv2 initialization dependent on ASIC information. Also allow building KFD without IOMMUv2 support. This is still useful for dGPUs and prepares for enabling KFD on architectures that don't support AMD IOMMUv2. v2: * Centralize IOMMUv2 code to avoid #ifdefs in too many places v3: * Imply AMD_IOMMU_V2 in Kconfig Signed-off-by: Felix Kuehling Acked-by: Christian Konig Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Fix potential NULL pointer dereferences

2018-01-10T23:15:09Z

In case kfd_get_process_device_data returns null, there are some null pointer dereferences in functions kfd_bind_processes_to_device and kfd_unbind_processes_from_device. Fix this by printing a WARN_ON for PDDs that aren't found and skip them with continue statements. Addresses-Coverity-ID: 1463794 ("Dereference null return value") Addresses-Coverity-ID: 1463772 ("Dereference null return value") Suggested-by: Felix Kuehling Signed-off-by: Gustavo A. R. Silva Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

drm/amdkfd: Simplify locking during process creation

2017-11-27T23:29:56Z

Also fixes error handling if kfd_process_init_cwsr fails. Signed-off-by: Yong Zhao Signed-off-by: Felix Kuehling Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay