> How about following comment: > /* Linux guests expect 512/64/128Mb alignment for PAE/x32/x64 arch > * respectively. Windows works fine with 2Mb. To make sure that > * memory hotplug would work with above flavors of Linux set > * minimal alignment to 512Mb (i.e. PAE arch). > * Enforcing minimal alignment bigger than that of a backend > * (2Mb for memory-backend-ram) changes GPAs of the 2nd and > * following DIMMs which breaks migration for older machine types, > * so force minimal alignment only since 2.5 machine type and do not > * apply it to older machine types (prior 2.5) > */ >
PAE guests are working with 128Mb alignment just fine, at least 3.8...3.16 I`ve tried previously, have you seen a counter-example?
