Bug 803869

Summary:	Intel CPU microcode no longer updated on i7-920
Product:	Red Hat Enterprise Linux 5	Reporter:	Michael Lampe <lampe>
Component:	microcode_ctl	Assignee:	Anton Arapov <anton>
Status:	CLOSED NOTABUG	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	5.8	CC:	anton, jlv, nobody
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-04-25 11:23:01 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:

Description Michael Lampe 2012-03-15 19:25:56 UTC

Description of problem:

Intel CPU microcode no longer updated on i7-920.

Version-Release number of selected component (if applicable):

1.17-1.56.el5

How reproducible:

Always

Steps to Reproduce:
1. Update to 5.8
2. Reboot
3. Check 'dmesg' for microcode update
  
Actual results:

IA-32 Microcode Update Driver: v1.14a <tigran>
<NOTHING!>

Expected results:

IA-32 Microcode Update Driver: v1.14a <tigran>
microcode: CPU1 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU6 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU5 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU7 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU4 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU3 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU2 updated from revision 0xe to 0x11, date = 04142009
microcode: CPU0 updated from revision 0xe to 0x11, date = 04142009

Comment 1 Michael Lampe 2012-03-15 20:11:56 UTC

microcode-20101123.tgz directly from intel works. More recent versions don't.

Comment 2 Anton Arapov 2012-03-16 10:12:20 UTC

Thanks for the reporting an issue, I will look into this with Intel folks.

Comment 3 Anton Arapov 2012-04-25 11:23:01 UTC

Michael, perhaps you are doing something wrong, we've checked the microcode_ctl package it does contain the required microcode update. 

== freshly installed RHEL5.8:
# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.8 Beta (Tikanga)
# cat /proc/cpuinfo
...
cpu family      : 6
model           : 26
model name      : Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
stepping        : 4
cache size      : 8192 KB
siblings        : 8
cpu cores       : 4
...
# rpm -q microcode_ctl
microcode_ctl-1.17-1.56.el5
# dmesg | grep -i microcode
IA-32 Microcode Update Driver: v1.14a <tigran>
microcode: CPU1 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU4 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU6 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU2 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU7 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU3 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU5 updated from revision 0xa to 0x11, date = 04212009 
microcode: CPU0 updated from revision 0xa to 0x11, date = 04212009 

Thus closing the bug.

Comment 4 Michael Lampe 2012-05-11 01:54:26 UTC

My 24 machines all say stepping == 5, not 4.

All of them have 'microcode_ctl-1.17-1.56.el5' installed.

None of them updates.

They did/do as described above.

Anyway ...