Re: [libvirt] [PATCH] cpu: Add support for CPU vendor
> By specifying <vendor> element in CPU requirements a guest
can be
> restricted to run only on CPUs by a given vendor. Host CPU vendor is
> also specified in capabilities XML.
>
> The vendor is checked when migrating a guest but it's not forced, i.e.,
> a guest configured without <vendor> element can be freely migrated.
...
> src/cpu/cpu_map.xml | 6 +
Why did you add <vendor> tags to several of the models there? Does qemu
(-no-kvm) have any problem emulating athlon on an Intel host?
Honestly, I don't know if qemu has any problems emulating them but it doesn't
really matter. The <vendor> emelement in cpu_map.xml is used when libvirt
decides what model should be used for describing host CPU.
And how about adding policy='disable' attribute, so that I
can ask
virConnectCompareCPU to ignore this particular incompatibility, as I do
with <feature> items?
Just don't use <vendor> tag in your XML.
In other words, if you specify <vendor> in domain XML (or it's cpu fragment
used by virConnectCompareCPU) and your host CPU is made by different vendor,
the CPUs won't match. If you don't specify <vendor>, you don't care
about the
vendor and neither does libvirt.
I hope it's more clear now.
Jirka