insufficient TLB flushing / improper large page mappings with AMD IOMMUs
[XSA-275] (#1651665)
resource accounting issues in x86 IOREQ server handling [XSA-276]
x86: incorrect error handling for guest p2m page removals [XSA-277]
x86: DoS from attempting to use INVPCID with a non-canonical addresses
[XSA-279]
Fix for XSA-240 conflicts with shadow paging [XSA-280]