What were you trying to do that didn't work?

Migration from RHEL 9.7 to RHEL 10.1 on arm with 64k kernel fails

What is the impact of this issue to you?

It is blocking migration test

Please provide the package NVR for which the bug is seen:

Source:
libvirt-10.10.0-1.el9.aarch64
qemu-kvm-9.1.0-20.el9.aarch64
kernel-5.14.0-584.el9.aarch64+64k
Target:
libvirt-11.3.0-1.el10.aarch64.rpm
qemu-kvm-10.0.0-3.el10.aarch64.rpm
kernel-6.12.0-83.el10.aarch64+64k

How reproducible is this bug?:

100%

Steps to reproduce

1. Follow steps in comments

Expected results

Migration succeeds

Actual results

[root@nvidia-grace-hopper-03 ~]# virsh migrate --p2p --live --verbose --persistent --domain avocado-vt-vm1 --desturi qemu+ssh://10.6.12.66/system
Migration: [96.66 %]error: operation failed: job 'migration in' failed: load of migration failed: Invalid argument

Migration failed.
Source qemu log:

char device redirected to /dev/pts/1 (label charserial0)
2025-05-21 06:15:35.621+0000: initiating migration
2025-05-21T06:15:43.486428Z qemu-kvm: Unable to shutdown socket: Transport endpoint is not connected
2025-05-21T06:15:43.573378Z qemu-kvm: Sibling indicated error 1

Target qemu log:

2025-05-21 06:15:35.155+0000: 241252: info : hostname: nvidia-grace-hopper-04.khw.eng.rdu2.dc.redhat.com
2025-05-21 06:15:35.155+0000: 241252: info : virObjectUnref:378 : OBJECT_UNREF: obj=0xfffe18007900
char device redirected to /dev/pts/2 (label charserial0)
2025-05-21T06:15:35.484268Z qemu-kvm: warning: Machine type 'virt-rhel9.6.0' is deprecated: machines from the previous RHEL major release are subject to deletion in the next RHEL major release
2025-05-21T06:15:43.481257Z qemu-kvm: Invalid value 259 expecting positive value <= 256
2025-05-21T06:15:43.481277Z qemu-kvm: Failed to load cpu:cpreg_vmstate_array_len
2025-05-21T06:15:43.481283Z qemu-kvm: error while loading state for instance 0x0 of device 'cpu'
2025-05-21 06:15:43.574+0000: shutting down, reason=failed
2025-05-21T06:15:43.575355Z qemu-kvm: terminating on signal 15 from pid 241198 (/usr/sbin/virtqemud)

Others

Setup migration environmnet, or rebuild job https://libvirt-rhos-jenkins-product.hosted.upshift.rdu2.redhat.com/job/libvirt-RHEL-9.7-provision-aarch64-function-cross_migration/11/ to get two hosts.