Bug 1217031 - Missing CPU microcode with 6.6+ kernel
Summary: Missing CPU microcode with 6.6+ kernel
Status: RESOLVED FIXED
Alias: None
Product: openSUSE Distribution
Classification: openSUSE
Component: Kernel (show other bugs)
Version: Leap 15.5
Hardware: Other Other
: P5 - None : Normal (vote)
Target Milestone: ---
Assignee: dracut maintainers
QA Contact: E-mail List
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Blocks:
 
Reported: 2023-11-10 15:07 UTC by Takashi Iwai
Modified: 2023-12-11 20:36 UTC (History)
1 user (show)

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Found By: ---
Services Priority:
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Marketing QA Status: ---
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Description Takashi Iwai 2023-11-10 15:07:39 UTC
When a new kernel (6.6 or later) is installed on Leap 15.5 system, dracut doesn't put the CPU microcode any longer, spewing
  Disabling early microcode, because kernel does not support it. CONFIG_MICROCODE_[AMD|INTEL]!=y

The kernel dropped those kconfigs but has only CONFIG_MICROCODE=y since 6.6.

Please take the upstream dracut fix for dropping this check to SLE15-SP5 / Leap 15.5 dracut package.
Comment 1 Antonio Feijoo 2023-11-10 15:16:11 UTC
Hi Takashi, the fix was already backported to Factory, but not to any SLE code stream. Do you need it only for Leap 15.5?
Comment 2 Takashi Iwai 2023-11-10 15:20:10 UTC
I personally am fine with only Leap 15.5 :)  Of course, it should be fixed for SLE15-SP6, too, if any.

Leap 15.4 will be discontinued in a few weeks, so I guess we can skip it.

Note that the use of new kernel from OBS Kernel:stable:Backport is popular among many Leap users, and the problem appeared only recently.
Comment 4 Antonio Feijoo 2023-11-13 14:50:24 UTC
(In reply to Takashi Iwai from comment #2)
> I personally am fine with only Leap 15.5 :)  Of course, it should be fixed
> for SLE15-SP6, too, if any.
> 
> Leap 15.4 will be discontinued in a few weeks, so I guess we can skip it.

Better safe than sorry :)

> Note that the use of new kernel from OBS Kernel:stable:Backport is popular
> among many Leap users, and the problem appeared only recently.

Fix backported to SP4/5/6, so it should be available in upcoming maintenance updates for SP4/5 and in SP6 GA.

Closing.
Comment 6 Maintenance Automation 2023-12-11 20:36:28 UTC
SUSE-RU-2023:4705-1: An update that has two fixes can now be installed.

Category: recommended (moderate)
Bug References: 1192986, 1217031
Sources used:
openSUSE Leap 15.4 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
openSUSE Leap Micro 5.3 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
openSUSE Leap Micro 5.4 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
SUSE Linux Enterprise Micro for Rancher 5.3 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
SUSE Linux Enterprise Micro 5.3 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
SUSE Linux Enterprise Micro for Rancher 5.4 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
SUSE Linux Enterprise Micro 5.4 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1
Basesystem Module 15-SP4 (src): dracut-055+suse.351.g30f0cda6-150400.3.31.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 7 Maintenance Automation 2023-12-11 20:36:32 UTC
SUSE-RU-2023:4703-1: An update that has two fixes can now be installed.

Category: recommended (moderate)
Bug References: 1192986, 1217031
Sources used:
openSUSE Leap 15.5 (src): dracut-055+suse.375.g1167ed75-150500.3.15.1
SUSE Linux Enterprise Micro 5.5 (src): dracut-055+suse.375.g1167ed75-150500.3.15.1
Basesystem Module 15-SP5 (src): dracut-055+suse.375.g1167ed75-150500.3.15.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.