On 2016-05-06 22:53, Radim Krčmář wrote: > The capability alows us to express x2APIC destinations.
"allows" Will the possibility to create >254 CPUs be indirectly coupled to this capability, or should userland check for it explicitly then? Will the kernel handle the case gracefully that AMD CPUs will report the capability as well, although there is no x2APIC (at least so far) with those CPU types, and we still inject MSI messages with that flag set (just to double-check if the case was thought through)? Jan