Per Altra family erratum, PCIE_65 may cause invalid addresses to be generated on PCIe mmio writes, impacting certain device types, notably AMD GPUs, and thus the Altra family is not generally compatible with those device types. We have provided a proof-of-concept software patch under the GPL v2 that will allow experimental and development work to proceed. PER THE TERMS OF THAT LICENSE AND AS A REMINDER, NO WARRANTIES OR SUPPORT IS PROVIDED. The patches for a particular kernel version are located in the directory with that version's name.
AmpereComputing/linux-ampere-altra-erratum-pcie-65
Kernel patches with workaround for Altra erratum PCIE_65
NOASSERTION