Hi, I have AMD servers running CentOS 6.10 as KVM host and on it guests running CentOS 7.5. Since the latest kernel update on CentOS 6.10, kernel-2.6.32-754.2.1.el6.x86_64, I can't boot the CentOS 7.5 guests with kernel-3.10.0-862.6.3.el7.x86_64 anymore. Reverting CentOS 6.10 host to kernel-2.6.32-754.el6.x86_64 fixes the problem. Screendump of the panic is attached, not very helpful I guess. The CPU models where I could test it are: cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2218 stepping : 3 cpu family : 16 model : 6 model name : AMD Athlon(tm) II Neo N36L Dual-Core Processor stepping : 3 Didn't test on newer CPU family yet. I'm wondering, does someone see the same issue? Does it not happen on Intel CPUs? Thanks for any insight. Regards, Simon