A bug that sometimes caused boot times on AMD Zen 1 and Zen 2 systems to swell to several minutes was patched today for the Linux 6.13 kernel (via Phoronix). While Linux can take a while to boot ...
Just ahead of the intended release of Linux kernel version 6.12 ... simply disabling virtualized VMLOAD/VMSAVE instructions on Zen 4, since Zen 4 CPUs weren't meant to have these instructions ...