25 lines
842 B
ReStructuredText
25 lines
842 B
ReStructuredText
|
.. 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
|