Public bug reported: The TDX work added some power management related code that seems to break us either way.
For now we carry debian/patches/ubuntu/Revert-i386-cpu-Warn-about-why- CPUID_EXT_PDCM-is-not.patch which at least allows us to migrate and save/restore in-release. But sadly with that applied it can no more migrate from older releases. We will need to provide fixups anyway, after all we are only at RC2, but open this for tracking and further communication. Here the summary from the current patch header Description: temporary workaround for migration and save/restore [PATCH] Revert "i386/cpu: Warn about why CPUID_EXT_PDCM is not available" This reverts commit 00268e00027459abede448662f8794d78eb4b0a4. . This is a temporary workaround until it can be resolved properly as discussed in https://lists.gnu.org/archive/html/qemu-devel/2025-08/msg01053.html Author: Christian Ehrhardt <[email protected]> Bug: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2115707 Origin: https://lists.gnu.org/archive/html/qemu-devel/2025-08/msg01053.html Last-Update: 2025-08-13 ** Affects: qemu (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2120649 Title: PDCM breakage in qemu 10.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2120649/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
