1
linux/Documentation/admin-guide/RAS/address-translation.rst
Borislav Petkov (AMD) 0e4fd816b0 Documentation: Move RAS section to admin-guide
This is where this stuff should be.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/87a5pes8jy.fsf@meer.lwn.net
2024-02-14 17:10:06 +01:00

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