Xen Test Framework
XSA-203

Advisory: XSA-203

Versions of Xen between 4.6 (when VMFUNC support was introduced) and XSA-203, would follow a NULL function pointer on non-Intel hardware.

Poke a VMFUNC at the instruction emulator, and see whether Xen falls over.

See also
tests/xsa-203/main.c