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