kernel security and bug fix update

2.6.32-696.28.1.OL6 - Update genkey bug 25599697 2.6.32-696.28.1 - x86 entry/64: Don't use IST entry for BP stack Waiman Long 1567078 1567079 CVE-2018-8897 - x86 xen: do not use xeninfo on HVM, set pvinfo name to 'Xen HVM' Vitaly Kuznetsov 1569141 1568241 2.6.32-696.27.1 - mm account skipped...