Re: virtualization Android OS + XEN.

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

One thing to watch out for is whether the bootloader (I am guessing
u-boot) boots in HYP mode, SVC mode or secure SVC mode.

HYP mode is what we want.
>From secure SVC mode we can go into HYP mode, so that would still be OK.
If u-boot boots the platform in non-secure SVC mode, then Xen cannot run
on it.


On Fri, 8 Aug 2014, anshul makkar wrote:
> Hi Julien,
> 
> Thanks for the information.
> 
> I am looking for Cubietruck or Cubieboard 2 with Allwinner A20
> processor but at present its not available in Germany. Any information
> about support/testing of XEN on A20-OLinuXino board
> (https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-MICRO-4GB/open-source-hardware),
> as I am planning to buy it as an alternative to Cubieboard. If at
> present XEN support is not therefor OLinuXindo, do you see any issues
> in supporting it ?
> 
> Thanks
> Anshul Makkar
> 
> On Thu, Aug 7, 2014 at 4:01 PM, Julien Grall <julien.grall@linaro.org> wrote:
> > Hello,
> >
> > On 08/07/2014 10:44 AM, anshul makkar wrote:
> >> Thanks Leonardo and Stefano.
> >>
> >> The information you shared is really helpful to get me started and get
> >> basic understanding of where Xen stands in its support for ARM.
> >>
> >> Below is my understanding, request your help to correct me if I am wrong.
> >>
> >> 1) XEN support for the ARM processor where hardware virtualization is
> >> not supported is not there.
> >>
> >> 2) Presently XEN port has been tested  on the following cards.
> >>
> >>   * The Cortex A15 Real-time System Model's provided by ARM
> >>   * A Cortex-A15 Processor running on the Versatile Express
> >>   * The Arndale board
> >>   * The Calxeda ECX-2000 (aka Midway) server
> >>   * Allwinner A20/A31 boards
> >
> > Porting Xen to a new board it's only a matter of a hundred lines if your
> > platform support virtualization.
> >
> >> I have Odroid Cortex A9 board, which doesn't have hardware
> >> virtualization. So for sure XEN can't be ported on that.
> >>
> >> Any idea or test results for Cortex A15 board (ODroidXU3 ) provided by
> >> ODroid. Whether this board is supported or not ?
> >
> > There is some on-going work to upstream support for ODroid XU.
> >
> > You can give a look here:
> >
> > http://lists.xen.org/archives/html/xen-devel/2014-07/msg03363.html
> >
> >> Please can you share some other board models that are cheap and
> >> supported by XEN ARM. What I have found on net is that all boards having
> >> Cortex A15 and hardware virtualization support, so that they are
> >> compatible with XEN, are quite expensive.
> >
> > The Cubietruck is supported by Xen. IIRC, the price is less 100$.
> >
> > Regards,
> >
> > --
> > Julien Grall
> 
> 
> 
> -- 
> Thanks
> Anshul Makkar
> www.justkernel.com
> http://www.linkedin.com/groups/Just-Kernel-3033180
>