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Re: [Xen-devel] [RFC 00/29] Support multiple ARM platforms in Xen



On Mon, 2013-04-29 at 19:20 +0100, Julien Grall wrote:
> On 04/29/2013 05:13 PM, Ian Campbell wrote:
> 
> > On Mon, 2013-04-29 at 00:01 +0100, Julien Grall wrote:
> >> Hello,
> >>
> >> This patch series is divided in 4 parts:
> >>     - Patch 1-6: Minor bug fixes
> >>     - Patch 7-10: Add hierarchical device tree support based on linux tree
> >>     - Patch 11-24: Remove harcoded part
> >>     - Patch 25-28: Arndale support based on Anthony's git
> >>
> >> Xen can boot on both Arndale Board and the Versatile Express without
> >> recompilation. But there is still some hardcoded part, mainly in assembly.
> >>
> >> Things to do:
> >>     - Move secondary CPUs bring up code in platform specific
> >>     - Move out of Xen the switch between secure mode and hypervisor mode
> >>     - Rework dom0 device tree creation
> >>     - Use everywhere the new device tree API
> >>     - Add a support for SYS MMU
> >>
> >> If you want to try this patch series you can clone:
> >>   git clone -b arm git://xenbits.xen.org/people/julieng/xen-unstable.git
> > 
> > From the wiki it seems that this also requires a non-mainline kernel (a
> > linaro derived thing?). How close is arndale support to being
> > upstream/mainline?
> 
> The wiki page point to a linux 3.7 whit linaro patches and xen patches.
> 
> It's seems the Arndale support is nearly completed on 3.9. It's a matter
> of about ten patches.
> 
> I would prefer to stick on linaro tree to avoid to maintain our own
> Linux Arndale tree. We can switch to a linux upstream once the Arndale
> is fully supported.

Yes, absolutely, the tree should either be Linaro or upstream mainline
not one of our won. If the long term trajectory is that mainline will be
usable in some future version that's perfect.

Ian.



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