On 11/22/2023 1:28 PM, Borislav Petkov wrote:
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.
Okay, will remove them.
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.
Thanks,
Yazen