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.
So that explains why this regressed in wily. The solution is
to add the SVM flag to the qemu64 machine type in
debian/patches/ubuntu/expose-vmx_qemu64cpu.patch
Actually this was done deliberately by upstream qemu:
commit 75d373ef9729bd2 2fbc46bfd8dcd15 8cbf6d9777
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.
So that explains why this regressed in wily. The solution is patches/ ubuntu/ expose- vmx_qemu64cpu. patch
to add the SVM flag to the qemu64 machine type in
debian/