Re: [Xen-users] Linux Dom0, Windows HVM, no VMX

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Nov 13, 2013 at 11:20:34PM +0100, Éliás Tamás wrote:
> Hi All.
> 
> I have an old IBM X440 with 16 CPUs, which can run XEN fine (4.2.3):
> Debian Linux dom0, kernel 3.2. I'd need to create a windows virtual
> machine, but the processors do not have the VMX support (1,4GHZ old
> XEONs from the PIII era).
> 
> I can see and understand that HVM will not work wo VMX, and for
> PVunderHVM there is still need of VMX support. I remember, I
> successfully used qemu on old linux servers to emulate windows wo VMX in
> the past. There is an old port, KQEMU wich does not need VMX. It is not

AIUI they use binary translation, which is quite slow.

> maintained any longer, but is it possible somehow to make it run under a
> XEN dom0 host? (it searches for /dev/kvm wich is obviously not available
> under xen)
> 
> Does anyone know any way of running a windows guest on CPUs wo VMX
> support, using XEN?

With Xen as VMM, I don't think so. Of course you can try to run QEMU
emulator in a DomU, but what's the point. :-)

Wei.


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