On Sat, Nov 18, 2023 at 01:32:31PM -0600, Yazen Ghannam wrote:
> Current AMD systems may report MCA errors using the ACPI Boot Error
> Record Table (BERT). The BERT entries for MCA errors will be an x86
> Common Platform Error Record (CPER) with an MSR register context that
> matches the MCAX/SMCA register space.
>
> However, the BERT will not necessarily be processed on the CPU that
> reported the MCA errors. Therefore, the correct CPU number needs to be
> determined and the information saved in struct mce.
>
> The CPU number is determined by searching all possible CPUs for a Local
> APIC ID matching the value in the x86 CPER.
Those below are explaining what the patch does. Not needed here.
> Set up the MCA record after searching for a CPU number. If no possible
> CPU was found, then return early.
>
> Gather the global MCA information first, save the found CPU number, then
> gather the per-CPU information.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
