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AMD Radeon GPUs have special sDMA (system dma engines) IPs that can be used to speed up the read write operations from the VRAM and GTT memory. Depends on: * The kernel mode driver (kfd) creating the dmabuf objects for the kfd BOs in both checkpoint and restore operation. * libdrm and libdrm_amdgpu libraries Suggested-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com> Signed-off-by: David Yat Sin <david.yatsin@amd.com>