Bug 1897684

Summary: [rhel-7.9.z] Re-enable 06-5e-03 (SKL-H/S, CPUID 0x506e3) latest microcode updates
Product: Red Hat Enterprise Linux 7 Reporter: Eugene Syromiatnikov <esyr>
Component: microcode_ctlAssignee: Eugene Syromiatnikov <esyr>
Status: CLOSED ERRATA QA Contact: Jeff Bastian <jbastian>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.9CC: jbastian, jreznik, skozina
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Story Points: ---
Clone Of: 1897673
: 1972332 1972333 1972334 1972335 1972336 (view as bug list) Environment:
Last Closed: 2021-08-09 10:09:55 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1897673    
Bug Blocks: 1972332, 1972333, 1972334, 1972335, 1972336    

Comment 2 Eugene Syromiatnikov 2021-06-10 19:07:05 UTC
microcode-20210608 comes with a new revision 0xea of 06-4e-03/06-5e-03, that seems to solve[1][2] the issue.

[1] https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31#issuecomment-857507126
[2] https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/47#issuecomment-857815716

Comment 4 Eugene Syromiatnikov 2021-06-17 14:01:59 UTC
Revision 0xea still hasn't fixed the issue[1], at least for 06-4e-03.  It may be worth enabling 06-5e-03 only, as this is the CPUID that includes some server (Xeon E3 v5) models, contrary to 06-4e-03, that is mobile-only.

[1] https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31#issuecomment-861674762

Comment 5 Eugene Syromiatnikov 2021-07-22 15:08:00 UTC
06-4e-03 continues to have (possibly unrelated) issues[1]; on the other hand, there are no new reports for 06-5e-03, it can't be reproduced in-house, and enabling microcode-provided protections is more pertinent for it, thus, the bug is re-scoped to include 06-5e-03 only.

[1] https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31#issuecomment-861674762

Comment 13 errata-xmlrpc 2021-08-09 10:09:55 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: microcode_ctl security, bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:3028