RE: [XenARM] Question about EmbeddedXen's Status

[ROSSIER Daniel <Daniel.Rossier@xxxxxxxxxx>]

> -----Original Message-----
> From: Parth Patel [mailto:parthvpatel@xxxxxxxxx]
> Sent: jeudi, 30. octobre 2008 14:22
> To: ROSSIER Daniel
> Subject: Re: [XenARM] Question about EmbeddedXen's Status
>
> Thank you for you prompt reply. I, too, am looking forward to work on
> this project and keep everybody else updated on my progress.
> I have few more questions, though.
>
> I understand that this initial code is from Mr. Davis (MontaVista). Can
> you let me know which Xen modules have been completed so that I can
> work on other modules for PXA27x?

Right now, we have no modules which are enabled. We will have a bootable Linux 
integrating the Xen code, but
without starting the hypervisor.
I propose that you wait a couple of days while we're solving the last issues so 
that you will be able to help us in enabling step-by-step the different 
functions.

Patrick, on the other hand, is getting the bootstrap code from Samsung (xen-arm 
project) into an original XEN tree (3.1) on i.MX21, before going forward to the 
i.MX31.

> Also, how do I enable the available Xen Hypervisor functions?

Enabling the functions will consist in un-commenting each function call in the 
main setup function provided that the memory has been correctly configured. 
Again, Samsung's port will be essential for this part.

>
> Thank You.
> Parth
> On Wed, Oct 29, 2008 at 12:47 AM, ROSSIER Daniel <Daniel.Rossier@heig-
> vd.ch> wrote:
>
> > -----Original Message-----
> > From: xen-arm-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-arm-
> > bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Parth Patel
> > Sent: mercredi, 29. octobre 2008 08:08
> > To: xen-arm@xxxxxxxxxxxxxxxxxxx
> > Subject: [XenARM] Question about EmbeddedXen's Status
> >
> > Hello Everyone,
> >
> > I am a student at UCLA working on a project that involves
> EmbeddedXen.
> > We want to port EmbeddedXen to "iMote 2" which has "PXA271"
> processor.
> > The OS we want to put on the Xen is MicroCOS.
> >
> > I have gone through all the archives in this message list, but could
> > not find out the exact status for the EmbeddedXen project. I know
> that
> > you guys are still working on Linux to put on Xen and the processor
> you
> > have used is PXA270, but is the porting of Xen onto the PXA270
> > completely done? If so, is there any documentation that I can use to
> Yes that's right; we are currently working on it; actually, we have
> started having a look at the
> strategy of porting including Samsung's port on i.MX21. But, we are
> adopting a different approach:
> we are actually considering  two approaches, on two different targets:
>
> 1) The first approach consists in integrating XEN 3.1 tree within the
> Linux (2.6.18) tree. We have solved all conflict issues, but it still
> remains some problems we are debugging now. The target is the
> Colibri/PXA270 platform. We will then slightly *enable* all
> functionalities of the hypervisor, putting in place our porting
> strategy (regarding MM, IRQ, Timer and syscalls/hypercalls).
> So far, we are not working on a more secure layer as Samsung did with
> their port. However, we will port a realtime OS - mainly Xenomai/Linux
> - replacing the Adeos/I-pipe nanokernel by some enhancements of our
> hypervisor.
>
> 2) The second approach is more close to Samsung's work: we start from
> the original XEN tree and we migrate all arch-/CPU-specific code issued
> from the Linux 2.6.18 tree in it. This approach is currently based on a
> i.MX31 platform; we aim at investigating to what extend the armv6
> instruction can improve the virtualization mechanisms. We are still at
> the beginning of this work.
>
> We plan the work on 1-Year project and will appreciate all
> contributions to these two approaches. So please do not hesitate to
> report your work process in this mailing list, and we also keep all
> informed about our progress.
>
> > port EmbeddedXen to different processor? Also, what specific files I
> > need to port to any processor?
> >
> > Please let me know.
> >
> > Thank you.
> >
> > Parth

Daniel


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