From d4ec4bdc0bd5ad352854473ba4dcbdb39fd5bfdd Mon Sep 17 00:00:00 2001 From: Felix Kuehling Date: Wed, 7 Apr 2021 18:46:26 -0400 Subject: drm/amdkfd: Allow access for mmapping KFD BOs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DRM render node file handles are used for CPU mapping of BOs using mmap by the Thunk. It uses the DRM render node of the GPU where the BO was allocated. DRM allows mmap access automatically when it creates a GEM handle for a BO. KFD BOs don't have GEM handles, so KFD needs to manage access manually. Use drm_vma_node_allow to allow user mode to mmap BOs allocated with kfd_ioctl_alloc_memory_of_gpu through the DRM render node that was used in the kfd_ioctl_acquire_vm call for the same GPU. Signed-off-by: Felix Kuehling Acked-by: Christian König Reviewed-by: Philip Yang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h index 0d59bebd92af..7c8c5e469707 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h @@ -245,7 +245,8 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( void *drm_priv, struct kgd_mem **mem, uint64_t *offset, uint32_t flags); int amdgpu_amdkfd_gpuvm_free_memory_of_gpu( - struct kgd_dev *kgd, struct kgd_mem *mem, uint64_t *size); + struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv, + uint64_t *size); int amdgpu_amdkfd_gpuvm_map_memory_to_gpu( struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv); int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( -- cgit