[virt-tools-list] virt-manager: Switching between kvm and plain qemu

Pavel Fedin p.fedin at samsung.com
Wed Apr 22 07:26:48 UTC 2015

 In virt-manager v0.9 it was possible to switch between qemu (interpreter
mode) and KVM when creating new ARM virtual machine. In v1 this possibility
is gone, and it always attempts to create KVM-based machine. This is bad
because not everything can be done with KVM. The limitation of KVM is that
guest CPU should be the same as host one. For example, i cannot run ARMv5
guest (like Integrator) on Cortex-A15 host using KVM. This gets especially
nasty because virt-manager attempts to instantly run just created machine,
and if running fails (it does in this case) it simply refuses to create it,
so that i cannot use virsh in order to fix it up.
 There is still "Virtualization type" selector widget, but it is hidden if
there is only one choice. For testing purposes i tried to force-enable it,
and it lists only 'qemu'. virt-manager somehow substitutes this with "kvm"
by itself.
 Can old behavior (choice between "kvm" and "qemu" variants) be restored ?

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia

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