After upgrading to kernel 6.12, VirtualBox fails to start

[icher]

You can use grubby as well:

# add kernel parameter
sudo grubby --update-kernel=ALL --args="kvm.enable_virt_at_load=0"

# remove kernel parameter
sudo grubby --update-kernel=ALL --remove-args="kvm.enable_virt_at_load=0"