SUSE-SU-2018:3230-1 Security update for xen

This update for xen fixes several issues. These security issues were fixed: - CVE-2018-8897: Prevent mishandling of debug exceptions on x86 XSA-260, bsc1090820 - Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially...