** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Assignee: Manoj Iyer (manjo)
Status: Incomplete
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https://bugs.launchpad.net/bugs/1628111
Title:
[Yakkety] enable EDAC_GHES in kernel config
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Yakkety:
Incomplete
Bug description:
EDAC_GHES is essential for ARMv8.0 Server systems, as it enables
firmware-first error handling of memory and CPU errors. Due to a lack
of standard RAS architecture (or machine check architecture
equivalent) on ARMv8.0 systems, APEI/GHES is the only mechanism
available for reporting hardware errors (e.g. memory and CPU errors).
This enables reporting of hardware errors, and also helps enable
memory fault recovery mechanisms to extend the life of the system by
offlining pages when recoverable uncorrected errors are encountered.
Note that other ARM vendors will be going in this direction for
hardware error handling.
Currently ACPI_APEI_GHES=n is in Ubuntu and CONFIG_EDAC_MM_EDAC=m for
ARM64, but EDAC_GHES requires this to be =y therefore it is not
selected.
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