This is the Linux Xen port. Enabling this will allow the kernel to boot in a paravirtualized environment under the Xen hypervisor.
This only affects the sizing of some bss arrays, the unused portions of which are freed.
Enable statistics output and various tuning options in debugfs. Enabling this option may incur a significant performance overhead.
Enable various WARN_ON checks in the Xen MMU code. Enabling this option WILL incur a significant performance overhead.