[Bug 2075502] Re: linux kernel bug which is unable to decode the CXL AMEI-GHES CPER logs from BIOS

The related patch:

https://lore.kernel.org/linux-
cxl/20241211234002.3728674-1-terry.bowman@amd.com/

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/2075502

Title:
linux kernel bug which is unable to decode the CXL AMEI-GHES CPER logs
from BIOS

Status in linux package in Ubuntu:
New

Bug description:
Linux OS is unable to decode the CXL AMEI-GHES CPER logs from BIOS due
to missing support on OS ACPI driver code. Observed with kernel 6.6

Lenovo found below CXL bug report from Intel (Birch Stream Platform
Message of the Week [MOW], WW30 2024, Reference Number: 645322),
please see below <CXL bug description> for more details.

Lenovo suggestion is: Port/back-port the fix patch to Ubuntu 22.04.x
and 24.04.x

-------------------------------------------------------------------------------------------------------
<CXL bug description>
Compute Express Link (CXL): Linux OS reports CXL Errors "Non-Standard Events" in Firmware First Mode

▪ Problem: Linux OS is unable to decode the CXL AMEI-GHES CPER logs from BIOS due to missing support on OS ACPI driver code.
Observed with kernel 6.6

▪ Implication: Linux OS will ignore and report the CXL CPER logs as
"nonstandard events".

▪ Workaround: None

▪ Status: A patch was created to support the detection of CXL CPER,
approved by the upstream community and trending to intercept the
mainline on kernel 6.11-rc1.

<Reference>
Birch Stream Platform Message of the Week [MOW]
WW30 2024, Reference Number: 645322

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2075502/+subscriptions