Ubuntu
qemu package

  1. Bug #1494602
  2. Comment #8

Comment 8 for bug 1494602

Revision history for this message
Stefan Bader (smb) wrote :

So this quite likely might be a "feature" that got introduced with qemu 2.2:

commit 75d373ef9729bd22fbc46bfd8dcd158cbf6d9777
Author: Eduardo Habkost <email address hidden>
Date: Fri Oct 3 16:39:51 2014 -0300

    target-i386: Disable SVM by default in KVM mode

    Make SVM be disabled by default on all CPU models when in KVM mode.
    Nested SVM is enabled by default in the KVM kernel module, but it is
    probably less stable than nested VMX (which is already disabled by
    default).

    Add a new compat function, x86_cpu_compat_kvm_no_autodisable(), to keep
    compatibility on previous machine-types.

I saw both machine types (pc-i440fx-trusty and pc-i440fx-utopic) mentioned in some xml configs. Not sure which is which. Might be worth checking the config in the currently not working case and if that is not trusty, try to replace it with that.