Will revert.
Causing error output during boot of Whonix VirtualBox 15.0.0.9.0-developers-only. (Happening during initramfs sysctl.)
vm.unprivileged_userfaultfd is an unknown key
That message is very prominent now that other verbose boot messages are disabled.
sudo sysctl -w vm.unprivileged_userfaultfd=0
sysctl: cannot stat /proc/sys/vm/unprivileged_userfaultfd: No such file or directory
Please fix.