docs: add known ipred-ctrl issue for speicfic cpu model #959
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Pull request overview
This PR adds documentation for a known upgrade issue related to the cpu-feature.node.kubevirt.io/ipred-ctrl=true CPU feature that appears during upgrades from v1.5.x to v1.6.x on specific Intel Xeon CPU models. The documentation provides workarounds for users before and after the upgrade.
Changes:
- Added a new section (§8) documenting the ipred-ctrl CPU feature issue during upgrades
- Updated subsequent section numbering (previous §8 becomes §9)
- Provided specific CPU models affected and multiple resolution options
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| docs/upgrade/v1-5-x-to-v1-6-x.md | Added new section 8 documenting ipred-ctrl CPU feature issue and renumbered subsequent sections |
| versioned_docs/version-v1.6/upgrade/v1-5-x-to-v1-6-x.md | Added identical documentation for v1.6 versioned docs |
| versioned_docs/version-v1.7/upgrade/v1-5-x-to-v1-6-x.md | Added identical documentation for v1.7 versioned docs |
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| **After the upgrade:** | ||
| - Reboot the virtual machines. |
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if node-labeller was disabled, then VM's do not need to rebooted after the upgrade as selector labels matching cpu features will not have changed
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you're right, done!
ibrokethecloud
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Jan 22, 2026
ihcsim
previously approved these changes
Jan 22, 2026
Signed-off-by: Jack Yu <jack.yu@suse.com>
Co-authored-by: Gaurav Mehta <gaurav.mehta@suse.com> Signed-off-by: Jack Yu <jack.yu@suse.com>
Signed-off-by: Jack Yu <jack.yu@suse.com>
Co-authored-by: Jillian Maroket <67180770+jillian-maroket@users.noreply.github.com> Signed-off-by: Jack Yu <jack.yu@suse.com>
Co-authored-by: Jillian Maroket <67180770+jillian-maroket@users.noreply.github.com> Signed-off-by: Jack Yu <jack.yu@suse.com>
Co-authored-by: Jillian Maroket <67180770+jillian-maroket@users.noreply.github.com> Signed-off-by: Jack Yu <jack.yu@suse.com>
Signed-off-by: Jack Yu <jack.yu@suse.com>
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jillian-maroket
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