Re: bad leakage between virtual machines?

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Tom Horsley wrote:
> I just submitted this fedora bug with lots of details:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=555788
> 
> It sure seems to me like the contents of the debug
> address trap registers are leaking across virtual machines
> (at least for opterons on this motherboard :-).

Are only AMD boxes affected, or did you also test on Intel?

> 
> Anyone seen anything like this before? (I've been
> having similar problems on this host since it was
> running xen 3.1 before switching to kvm).

I still have one debug register oddity on my todo list (that one causes
an unhandled VM exit), but I'm not aware of such an issue nor do I
remember any patch between 2.6.31.x and now at the moment that may have
fixed it. Nevertheless, could you retry with latest kvm kernel or a
recent kvm-kmod release?

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
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