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Feature #16406

closed

zen topo should tolerate missing revision or ppin info

Added by Robert Mustacchi 2 months ago. Updated about 2 months ago.

Status:
Closed
Priority:
Normal
Category:
lib - userland libraries
Start date:
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:
External Bug:

Description

To make the zen topo module a little more useful for folks, there are two things that we should make it more tolerant of:

1. Missing a CPU identification string. This is driven by MSR_PPIN, but some BIOSes lock it out and even if you try to enable it it may not take. This will lead to the chip not having a serial number and us not adding it to the ASRU, but that's better than nothing at all.
2. When we have a CPU without a known explicit revision, the module will attempt to add a NULL string to a set of properties which will fail later on. Like the above we should just not fail.

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