1. Got rid of statistics to simplify maintenance. Changing global
kernel structures is not a thing to take lightly.
2. Removed sanitization of pages. Starting from kernel 4.6, page
poisoning should be used instead. To enable it, set page_poison=on in
the boot options for the kernel.
3. The sanitization patch is now applied only if enhanced security is
enabled (disabled by default for ROSA Fresh, enabled for cert. builds).
You can also use "rpmbuild -ba --with enhanced_security <...>" to force
enable the feature.