This update for xen fixes the following issues: - bsc#1178963 - stack corruption from XSA-346 change - bsc#1177409 - CVE-2020-27674: x86 PV guest INVLPG-like flushes may leave stale TLB entries - bsc#1177412 - CVE-2020-27672: Race condition in Xen mapping code - bsc#1177413 - CVE-2020-27671: undue deferral of IOMMU TLB flushes - bsc#1177414 - CVE-2020-27670: unsafe AMD IOMMU page table updates - bsc#1178591 - CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack aka XSA-351