Re: Xen as L1 support

[Paolo Bonzini <pbonzini@redhat.com>]

Il 15/05/2013 03:24, Ren, Yongjie ha scritto:
>> -----Original Message-----
>> From: kvm-owner@vger.kernel.org [mailto:kvm-owner@vger.kernel.org]
>> On Behalf Of Alex Palesandro
>> Sent: Tuesday, May 14, 2013 10:51 PM
>> To: kvm@vger.kernel.org
>> Subject: Fwd: Xen as L1 support
>>
>> Hi,
>> I'm new to KVM. I'm doing some test on nested Virtualization with Xen
>> and KVM. I tried to test the Xen hypervisor as L1 over KVM ( Linux
>> 3.9.0) and I found this in
>> "xm dmesg" log ( for the complete log, see the attached file).
>> --------------------------------------------
>> (XEN) VMX: CPU0 has insufficent VMExit Control (00036fff but requires
>> min 00008200)
>> (XEN) VMX: failed to initialise.
>> --------------------------------------------

This is the "Acknowledge interrupt on exit" control.  It shouldn't be
hard to implement it.

Paolo

>> I found some bug-traces [1] [2] but the hex value here is different from the
>> previously reported one, so maybe that is a different issue.
>>
>> Will Xen be supported as L1?
>>
> So far, I think it's NO. VMX doesn't work, but PV guest can work in L1 Xen.
> There's a bug tracking 'Xen on KVM' issue.
> https://bugzilla.kernel.org/show_bug.cgi?id=45931
> 
> Best Regards,
>      Yongjie (Jay)
> 
> 
>> Many Thanks.
>>
>> Alex
>>
>> [1] https://patchwork.kernel.org/patch/1318301/
>> [2} https://patchwork.kernel.org/patch/789632/
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