Re: [libvirt] [RFC 0/5] Qemu: s390: Cpu Model Support

On Wed, Nov 02, 2016 at 16:34:30 -0400, Jason J. Herne wrote: ... > Patch #5 updates qemuBuildCpuModelArgStr's VIR_CPU_MODE_HOST_MODEL case. It > seems like all archs except PPC64 do not support host model mode. x86 supports host-model too, but ppc64 (mis)used the host-model mode in a very specific way. > Here is a list of outstanding things to do and some questions. > > 1. virsh domcapabilities --emulatorbin flag > > This works today if the command is passed --emulatorbin /usr/bin/qemu-kvm. > If no emulatorbin is given then Libvirt seems to choose > /usr/bin/qemu-system-s390x my system which does not have kvm enabled. Does s390x still use the abandoned qemu-kvm name or is it just the stupid shell wrapper which calls the real binary with -machine accel=kvm? You say /usr/bin/qemu-system-s390x does not have kvm enabled, does it mean you cannot use kvm with this binary at all or you need to explicitly enable it with the -machine accel=kvm option?