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

On 11/03/2016 02:37 PM, Jiri Denemark wrote: > 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? Its the latter. qemu-system-s390x has tcg and kvm and requires accel=kvm to return useful data