I have a Ryzen 7 1700 host running a Qemu OS X guest with PCI passthrough of a RX580. It appears that the AMD drivers for macOS Sierra and High Sierra use SSE4.2 instructions, however I use -cpu Penryn with my Qemu launch command and the guest does not report SSE4.2, but the AMD drivers work just fine. So I’m wondering if KVM is passing SSE4.2 from the host to the guest, even tho the Penryn cpu doesn’t support SSE4.2? I’m using these options, tho I’m not sure what some of them do? MY_OPTIONS="+aes,+xsave,+avx,+xsaveopt,avx2,+smep" /home/jam/QEMU/bin/qemu-system-x86_64 -enable-kvm -m 8192 -cpu Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,$MY_OPTIONS\ If anyone could clear this up for me it would be helpful with something I’m trying to debug. Thanks JD-- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
