[libvirt] [PATCH v5 7/9] tests: check CPU features handling in libxl driver

[Marek Marczykowski-Górecki]

On Fri, Mar 16, 2018 at 05:44:28PM +0000, Daniel P. Berrangé wrote:
> Since Xen lets you specify raw  "cpuid" register values here, surely
> this is flexible enough to allow us to support the mode=custom CPU
> models ?
> 
> We would just need to make sure every bit poisition used either
> 0 or 1, and not 'x', so that we are fully overriding whatever
> defaults are presented by the hypervisor "host" CPU model. Or is
> life more complicated than that ?

This is what v1 of this series had... See discussion there, especially
message from Jiri:
https://www.redhat.com/archives/libvir-list/2017-June/msg01304.html

And this, from... you:
https://www.redhat.com/archives/libvir-list/2017-June/msg01308.html

This is not only about 'x'. But also about setting '1' where hardware
does not really support given feature. This will also result in "broken"
CPU.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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