Hristo Venev 6c79e42169 EDAC/amd64: Add support for ECC on family 19h model 60h-7Fh
Ryzen 9 7950X uses model 61h. Treat it as Epyc 9004, but with 2 channels
instead of 12.

With two 32GB dual-rank DIMMs the sizes appear to be reported correctly:

  EDAC MC0: Giving out device to module amd64_edac controller F19h_M60h: DEV 0000:00:18.3 (INTERRUPT)
  EDAC amd64: F19h_M60h detected (node 0).
  EDAC MC: UMC0 chip selects:
  EDAC amd64: MC: 0:     0MB 1:     0MB
  EDAC amd64: MC: 2: 16384MB 3: 16384MB
  EDAC MC: UMC1 chip selects:
  EDAC amd64: MC: 0:     0MB 1:     0MB
  EDAC amd64: MC: 2: 16384MB 3: 16384MB
  AMD64 EDAC driver v3.5.0

ECC errors can also be detected:

  mce: [Hardware Error]: Machine check events logged
  [Hardware Error]: Corrected error, no action required.
  [Hardware Error]: CPU:0 (19:61:2) MC21_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc2040000400011b
  [Hardware Error]: Error Addr: 0x00000007ff7e93c0
  [Hardware Error]: IPID: 0x0000009600050f00, Syndrome: 0x000100010a801203
  [Hardware Error]: Unified Memory Controller Ext. Error Code: 0, DRAM ECC error.
  EDAC MC0: 1 CE Cannot decode normalized address on mc#0csrow#3channel#0 (csrow:3 channel:0 page:0x0 offset:0x0 grain:64 syndrome:0x1)
  [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD

According to Mario Limonciello, the same code should also work for
models 70h-7Fh (follow thread in Link).

  [ bp: Massage, the translation logic updates are pending. ]

Signed-off-by: Hristo Venev <hristo@venev.name>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20230425201239.324476-1-hristo@venev.name
Link: https://lore.kernel.org/r/20230511174506.875153-2-hristo@venev.name
2023-05-15 16:32:47 +02:00
2022-09-28 09:02:20 +02:00
2023-05-07 13:34:35 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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