Hi,
We have a report in Debian[1] where after a update from 1.2.16 to 1.2.18
VMs on a Intel i5 CPU fail to start due to libvirt not being able to
match the CPU vendor:
# virsh start sid
error: Failed to start domain sid
error: unsupported configuration: guest and host CPU are not compatible: host CPU vendor does not match required CPU vendor Intel
The root cause seems to be that the <vendor> element is missing from the
hosts capabilities. While I have:
$ virsh capabilities | xpath -q -e //host/cpu/vendor
<vendor>Intel</vendor>
on my Intel box the reporters machine with a Core i5 the <vendor> element is just
empty. Any idea what could have triggered this? This is still broken in
1.2.19-rc1. The bug has more details and logs attached. Any pointers
would be welcome since I don't have access to such a machine atm to step
through src/cpu/cpu_x86.c.
Cheers,
-- Guido
[1] http://bugs.debian.org/797513
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