https://linux-kvm.org/api.php?action=feedcontributions&feedformat=atom&user=ErdkKVM - User contributions [en]2026-04-05T12:04:29ZUser contributionsMediaWiki 1.39.5https://linux-kvm.org/index.php?title=StableABI&diff=3426StableABI2010-12-02T12:56:33Z<p>Erdk: </p>
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<div>= Stable Guest ABI =<br />
<br />
Allow guest virtual machines to be presented with the same ABI across QEMU upgrades.<br />
<br />
= Detailed =<br />
== Why is it useful? ==<br />
<br />
Changing guest ABI can confuse or break guests.<br />
<br />
This is particularly relevant for Windows guests where a guest ABI change may require Windows installs to be reactivated. <br />
<br />
== How to run ==<br />
<br />
libvirt takes care of it.<br />
<br />
== How to test ==<br />
<br />
Requirement: At least one guest image installed before executing this case.<br />
<br />
1) Edit an existing guests configuration using virsh edit<br />
2) Set the machine attribute to pc e.g.<br />
<br />
<os><br />
<type arch='x86_64' machine='pc'>hvm</type><br />
<br />
3) Check the newly saved configuration using virsh dumpxml<br />
4) Verify the machine attribute is now pc-0.11 e.g.<br />
<br />
<os><br />
<type arch='x86_64' machine='pc-0.11'>hvm</type><br />
<br />
5) Start the guest and verify that it boots correctly as before.<br />
<br />
== Potential migration issues ==<br />
== Backward/forward compatibility issues ==<br />
== Specific issues with some releases ==<br />
<br />
= Test cases =<br />
<br />
= Links =<br />
<br />
For additional information, see [https://fedoraproject.org/wiki/Features/KVM_Stable_Guest_ABI Features/KVM Stable Guest ABI] and<br />
[https://fedoraproject.org/wiki/Features/KVM_Stable_PCI_Addresses Features/KVM Stable PCI Addresses]<br />
on the [https://fedoraproject.org/wiki/Fedora_Project_Wiki Fedora Project Wiki].</div>Erdk