> On Aug 22, 2019, at 09:51, Andrew Cooper <andrew.coop...@citrix.com> wrote: > >> On 22/08/2019 03:06, Johnson, Ethan wrote: >> >> For HVM, obviously anything that can't be virtualized natively by the >> hardware needs to be emulated by Xen/QEMU (since the guest kernel isn't >> expected to be cooperative to issue PV hypercalls instead); but I would >> expect emulation to be limited to the relatively small subset of the ISA >> that VMX/SVM can't natively virtualize. Yet I see that x86_emulate.c >> supports emulating just about everything. Under what circumstances does >> Xen actually need to put all that emulation code to use? > > Introspection, as I said earlier, which is potentially any instruction.
Could introspection-specific emulation code be disabled via KConfig? Rich _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
