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[Xen-ia64-devel] Community effort needed to catch up with xen-unstable


  • To: <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>
  • Date: Thu, 25 Aug 2005 16:25:50 -0700
  • Delivery-date: Thu, 25 Aug 2005 23:24:50 +0000
  • List-id: DIscussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcWpzFSxEuYaMJrXQ3Sk49Vkfrz73g==
  • Thread-topic: Community effort needed to catch up with xen-unstable

Per my email yesterday, xen-ia64-unstable was a couple weeks
behind xen-unstable and xen-unstable has evolved considerably
to support, for example, the new xenbus and xenstore
mechanisms which will be in Xen 3.0.  This means that
the core Xen drivers which were snapshotted two months
ago in xenlinux-ia64 were hopelessly out of date and
there will be significant work required to catch up.

The hypervisor itself updated to the latest -unstable
tip fairly easily, but I spent most of today trying to
update the xenlinux-ia64 drivers.  I was able to work
through all the syntactic issues (and mark them all
with "#ifdef __ia64__") so that xenlinux will compile,
but I made little attempt to resolve the semantic issues,
and there are some new ones.

This may not be popular, but I have checked in both updated
trees: xen-ia64-unstable.hg and xenlinux-ia64-2.6.12.hg.
The xen drivers are known to NOT work... indeed I have
disabled them explicitly to avoid a domain0 kernel panic
(see FIXME in driver/xen/core/gnttbl.c).  In addition,
I noticed that domain0 normal networking seems to be
broken (I have no clue why at this point).  Your mileage
may vary.

I would like to solicit (or maybe beg!) for your help
in bug-hunting and bug-fixing to bring xen-ia64 back
to the previous functionality (e.g. multiple domains
working with grant tables, console and blk drivers).
Some of you may have participated in implementation
and debugging of the equivalent driver code on the x86 side
and your help especially would be greatly appreciated.
I see this as a community effort... I do not expect to
accept new functionality patches until this is all
working again.

Thanks,
Dan

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