Extend current kernel config requirements of amdgpu by adding config HSA_AMD_P2P. Enabling HSA_AMD_P2P is REQUIRED to support peer-to-peer communication, in both data and control planes, among AMD GPU devices that are connected via PCIe and have large BAR vBIOS Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@xxxxxxx> --- drivers/gpu/drm/amd/amdkfd/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/Kconfig b/drivers/gpu/drm/amd/amdkfd/Kconfig index 8cc0a76ddf9f..26614f5f20ea 100644 --- a/drivers/gpu/drm/amd/amdkfd/Kconfig +++ b/drivers/gpu/drm/amd/amdkfd/Kconfig @@ -25,3 +25,11 @@ config HSA_AMD_SVM 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 this if you want to access AMD GPU peer devices, in both data + and control planes, that are connected via PCIe and have large BAR vBIOS + -- 2.35.1
