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- # SPDX-License-Identifier: MIT
- #
- # Heterogeneous system architecture configuration
- #
- config HSA_AMD
- bool "HSA kernel driver for AMD GPU devices"
- depends on DRM_AMDGPU && (X86_64 || ARM64 || PPC64)
- imply AMD_IOMMU_V2 if X86_64
- select HMM_MIRROR
- select MMU_NOTIFIER
- select DRM_AMDGPU_USERPTR
- help
- Enable this if you want to use HSA features on AMD GPU devices.
- config HSA_AMD_SVM
- bool "Enable HMM-based shared virtual memory manager"
- depends on HSA_AMD && DEVICE_PRIVATE
- default y
- select HMM_MIRROR
- select MMU_NOTIFIER
- help
- Enable this to use unified memory and managed memory in HIP. This
- memory manager supports two modes of operation. One based on
- preemptions and one based on page faults. To enable page fault
- based memory management on most GFXv9 GPUs, set the module
- parameter amdgpu.noretry=0.
- config HSA_AMD_P2P
- bool "HSA kernel driver support for peer-to-peer for AMD GPU devices"
- depends on HSA_AMD && PCI_P2PDMA && DMABUF_MOVE_NOTIFY
- help
- Enable peer-to-peer (P2P) communication between AMD GPUs over
- the PCIe bus. This can improve performance of multi-GPU compute
- applications and libraries by enabling GPUs to access data directly
- in peer GPUs' memory without intermediate copies in system memory.
- This P2P feature is only enabled on compatible chipsets, and between
- GPUs with large memory BARs that expose the entire VRAM in PCIe bus
- address space within the physical address limits of the GPUs.
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