On 22/08/2019 16:06, Rian Quinn wrote: > I can at least confirm that no emulation is needed to execute a Linux > guest, even with the Xen PVH interface, but I don't think that works > out of the box today with Xen, something we are currently working on > and will hopefully have some more data near the end of the year. > x2APIC helps, but it takes some work to convince Linux to use that > currently. The trick is to avoid PortIO and, where possible, MMIO > interfaces.
There is a bit in the CPUID leaves which allegedly should cause Linux to try and use x2apic, but I can easily see this having bitrotted. It is certainly something we need to fix. ~Andrew _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
