Unverified Commit 447bba08 authored by Luna's avatar Luna
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linux/common-config: enable DMABUF_MOVE_NOTIFY and HSA_AMD_P2P 

These flags are required for P2P transfers between accelerators.
DMABUF_MOVE_NOTIFY is generic for DMABUF but mainly used by ROCm.
HSA_AMD_P2P is ROCm specific.

Enabling for 6.6+ despite support in 6.1+ as I recall these features
being somewhat buggy when initially introduced.
parent 3546c921

pkgs/os-specific/linux/kernel/common-config.nix

+6 −1
Original line number Diff line number Diff line
@@ -1307,7 +1307,12 @@ let 
        HOTPLUG_PCI_PCIE = yes; # PCI-Expresscard hotplug support



        # Enable AMD's ROCm GPU compute stack

        HSA_AMD = lib.mkIf stdenv.hostPlatform.is64bit (yes);

        HSA_AMD = lib.mkIf stdenv.hostPlatform.is64bit yes;

        # required for P2P DMABUF

        DMABUF_MOVE_NOTIFY = lib.mkIf stdenv.hostPlatform.is64bit (whenAtLeast "6.6" yes);

        # required for P2P transfers between accelerators

        HSA_AMD_P2P = lib.mkIf stdenv.hostPlatform.is64bit (whenAtLeast "6.6" yes);



        ZONE_DEVICE = lib.mkIf stdenv.hostPlatform.is64bit (yes);

        HMM_MIRROR = yes;

        DRM_AMDGPU_USERPTR = yes;