Here is the summary of what is going in on for this bug in the past weeks and the outcome as of today:
We submitted a RFC patch to qemu upstream : https://lists.nongnu.org/archive/html/qemu-devel/2025-09/msg01981.html Based on this RFC patch, upstream maintainer submitted a more official/clean fix: https://lists.nongnu.org/archive/html/qemu-devel/2025-09/msg04614.html I tested this submission and it works for both Intel and AMD CPUs, As of today, we think that even this submission is not merged upstream but we have sufficient feedback/review and upstream commitment to go ahead and apply the patch to 25.10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2121787 Title: Cross release migration broken to questing (q 10.1/ lv 11.6) - "missing features: pdcm,arch-capabilities" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2121787/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
