From: Lukas Laukamp <lukas@laukamp.me>
To: "Pasi Kärkkäinen" <pasik@iki.fi>
Cc: xen-devel@lists.xensource.com
Subject: Re: [User Question] KVM and VirtualBox in Xen Dom0
Date: Thu, 20 Sep 2012 15:52:12 +0200 [thread overview]
Message-ID: <a62fce60d8c566e07fa241f405af998f@laukamp.me> (raw)
In-Reply-To: <20120920083742.GW8912@reaktio.net>
Am 2012-09-20 10:37, schrieb Pasi Kärkkäinen:
> On Thu, Sep 20, 2012 at 10:03:43AM +0200, Lukas Laukamp wrote:
>> >
>> >I think it *might* be possible when Xen PVH (Hybrid) is merged to
>> >Xen 4.3,
>> >which basically allows running Xen dom0 in HVM container.
>> >
>> >-- Pasi
>>
>> Hello,
>>
>> I googled for xen Hybrid, but have question if I understand it
>> correct. Now the Dom0 is a PV Guest.
>>
>
> Correct.
>
>> With Xen Hybrid the Dom0 can run as a HVM with PV features on the
>> hypervisor.
>>
>
> PVH dom0 is basicly PV dom0 in HVM container. It's more PV than HVM.
>
>> This would make it possible because of nested virtualization that
>> KVM and VirtualBox
>> run inside dom0 right?
>>
>
> Yes, but PVH doesn't enable nested virt automatically, that'll
> require some extra patches.
>
>> And my second question would be: Is the aim of Xen hybrid to bring
>> Dom0 support to more OSes?
>>
>
> The purpose of PVH dom0 is to be able to utilize HAP (Hardware
> Assisted Paging)
> in dom0, and also lowering syscall overhead for 64bit dom0.
>
> So it's about optimizations.
> See Mukesh's presentation about PVH/Hybrid from XenSummit North
> America 2012.
>
> -- Pasi
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
Hello,
thanks for our replies Fajar and Pasi. My questions are replied now. I
thought it would be comfortable to have them all on one host, we will
see whether it's possible in future with PVH.
Best Regards
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next prev parent reply other threads:[~2012-09-20 13:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-20 7:11 [User Question] KVM and VirtualBox in Xen Dom0 Lukas Laukamp
2012-09-20 7:36 ` Pasi Kärkkäinen
2012-09-20 7:44 ` Lukas Laukamp
2012-09-20 7:52 ` Pasi Kärkkäinen
2012-09-20 8:03 ` Lukas Laukamp
2012-09-20 8:37 ` Pasi Kärkkäinen
2012-09-20 13:52 ` Lukas Laukamp [this message]
2012-09-20 8:10 ` Fajar A. Nugraha
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