1# SPDX-License-Identifier: MIT
 2#
 3# Heterogeneous system architecture configuration
 4#
 5
 6config HSA_AMD
 7	bool "HSA kernel driver for AMD GPU devices"
 8	depends on DRM_AMDGPU && (X86_64 || ARM64 || PPC64)
 9	select HMM_MIRROR
10	select MMU_NOTIFIER
11	select DRM_AMDGPU_USERPTR
12	help
13	  Enable this if you want to use HSA features on AMD GPU devices.
14
15config HSA_AMD_SVM
16	bool "Enable HMM-based shared virtual memory manager"
17	depends on HSA_AMD && DEVICE_PRIVATE
18	default y
19	select HMM_MIRROR
20	select MMU_NOTIFIER
21	help
22	  Enable this to use unified memory and managed memory in HIP. This
23	  memory manager supports two modes of operation. One based on
24	  preemptions and one based on page faults. To enable page fault
25	  based memory management on most GFXv9 GPUs, set the module
26	  parameter amdgpu.noretry=0.
27
28config HSA_AMD_P2P
29	bool "HSA kernel driver support for peer-to-peer for AMD GPU devices"
30	depends on HSA_AMD && PCI_P2PDMA && DMABUF_MOVE_NOTIFY
31	help
32	  Enable peer-to-peer (P2P) communication between AMD GPUs over
33	  the PCIe bus. This can improve performance of multi-GPU compute
34	  applications and libraries by enabling GPUs to access data directly
35	  in peer GPUs' memory without intermediate copies in system memory.
36
37	  This P2P feature is only enabled on compatible chipsets, and between
38	  GPUs with large memory BARs that expose the entire VRAM in PCIe bus
39	  address space within the physical address limits of the GPUs.
40