talos-op-linux/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c, branch v4.17

drm/amdgpu: Fix acquiring VM on large-BAR systems

2018-03-23T19:30:35+00:00

On large-BAR systems the VM page tables for compute are accessed by the CPU. Always allow CPU access to the page directory so that it can be used later by the CPU when a VM is converted to a compute VM. Signed-off-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Oded Gabbay

drm/amdgpu: Add kfd2kgd interface to acquire an existing VM

2018-03-15T21:27:43+00:00

This allows acquiring an existing VM from a render node FD to use it for a compute process. Such VMs get destroyed when the original file descriptor is released. Added a callback from amdgpu_vm_fini to handle KFD VM destruction correctly in this case. v2: * Removed vm->vm_context check in amdgpu_amdkfd_gpuvm_destroy_cb, check vm->process_info earlier instead Signed-off-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Oded Gabbay

drm/amdgpu: Add helper to turn an existing VM into a compute VM

2018-03-15T21:27:42+00:00

v2: Removed updating and checking of vm->vm_context v3: Enable amdgpu_vm_clear_bo in amdgpu_vm_make_compute Signed-off-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Oded Gabbay

drm/amdgpu: explicit give BO type to amdgpu_bo_create

2018-03-14T20:08:24+00:00

Drop the "kernel" and sg parameter and give the BO type to create explicit to amdgpu_bo_create instead of figuring it out from the parameters. Signed-off-by: Christian König Reviewed-by: Roger He Signed-off-by: Alex Deucher

drm/amdgpu: update the PASID mapping only on demand

2018-02-19T19:20:18+00:00

Updating the PASID is rather heavyweight and shouldn't be done all the time. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: separate PASID mapping from VM flush v2

2018-02-19T19:20:18+00:00

Stuffing the PASID mapping into the VM flush isn't flexible enough since the PASID mapping changes not as often as we need a VM flush. v2: add missing use of gmc_v7_0_emit_pasid_mapping Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: sync the VM PD/PT before clearing it

2018-02-19T19:19:26+00:00

Otherwise we might overwrite stuff which is still in use. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: clear the shadow fence as well

2018-02-19T19:19:20+00:00

It also needs to be initialized. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher

drm/amdgpu: release the VM shadow in the error path as well

2018-02-19T19:19:20+00:00

Without it we run into a memory leak. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher

drm/amdgpu: fill only the lower range with ATS entries v2

2018-02-19T19:18:55+00:00

At least on x86-64 the upper range is purely used by the kernel, avoid creating any ATS mappings there as security precaution and to allow proper page fault reporting in the upper range. v2: remove unused variable Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher