91fe5fe7e7
upon returning from the guest which aren't immediately clobbered by the host. This eradicates any remaining guest contents limiting their usefulness in an exploit gadget. This was inspired by this linux commit: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b6c02f38315b720c593c6079364855d276886aa Reviewed by: grehan, rgrimes Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D13573