tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. SPDX-License-Identifier: GPL-2.0
2
3Address translation
4===================
5
6x86 AMD
7-------
8
9Zen-based AMD systems include a Data Fabric that manages the layout of
10physical memory. Devices attached to the Fabric, like memory controllers,
11I/O, etc., may not have a complete view of the system physical memory map.
12These devices may provide a "normalized", i.e. device physical, address
13when reporting memory errors. Normalized addresses must be translated to
14a system physical address for the kernel to action on the memory.
15
16AMD Address Translation Library (CONFIG_AMD_ATL) provides translation for
17this case.
18
19Glossary of acronyms used in address translation for Zen-based systems
20
21* CCM = Cache Coherent Moderator
22* COD = Cluster-on-Die
23* COH_ST = Coherent Station
24* DF = Data Fabric