Just ahead of the intended release of Linux kernel version 6.12, AMD Linux engineer Mario Limonciello pushed an urgent fix to be merged with Linux kernel 6.12, and retroactively to other kernels. The fix gets rid of some hard crashing issues that were being experienced by Ryzen 7000 and 8000 Series processor users dabbling in virtualization, per Phoronix.
As explained by AMD engineer Mario Limonciello in his patch note, "A number of Zen4 client SoCs advertise the ability to use virtualized VMLOAD/VMSAVE, but using these instructions is reported to be a cause of a random host reboot. These instructions aren't intended to be advertised on Zen4 client, so clear the capability." In other words, the fix here is simply disabling virtualized VMLOAD/VMSAVE instructions on Zen 4, since Zen 4 CPUs weren't meant to have these instructions to begin with.
