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CXL Address Translation Support For AMD Zen 5 Sees Linux Patches
A set of Linux kernel patches posted by AMD engineers last week are working on enhancing the CXL address translation support between the HPA decoder and system physical memory addresses
These patches get that CXL address translation support working for the recently launched AMD EPYC 9005"Turin" Zen 5 server processors. The AMD Zen 5 support relies upon the ACPI Platform Runtime Mechanism (PRM) for the address translation. See this Linux kernel patch series now under review for those interested in CXL on AMD Zen 5 servers.
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