| .. SPDX-License-Identifier: GPL-2.0 |
| |
| Address translation |
| =================== |
| |
| x86 AMD |
| ------- |
| |
| Zen-based AMD systems include a Data Fabric that manages the layout of |
| physical memory. Devices attached to the Fabric, like memory controllers, |
| I/O, etc., may not have a complete view of the system physical memory map. |
| These devices may provide a "normalized", i.e. device physical, address |
| when reporting memory errors. Normalized addresses must be translated to |
| a system physical address for the kernel to action on the memory. |
| |
| AMD Address Translation Library (CONFIG_AMD_ATL) provides translation for |
| this case. |
| |
| Glossary of acronyms used in address translation for Zen-based systems |
| |
| * CCM = Cache Coherent Moderator |
| * COD = Cluster-on-Die |
| * COH_ST = Coherent Station |
| * DF = Data Fabric |
