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