[RFC] Using linux-2.6.tip-xen on IA64

Hi, all

We can success booting domU with linux-2.6.tip-xen.
(This is FedoraCore work.)
The build step is the below.
I think the step is almost same as Aron's step.
(http://free.linux.hp.com/~agriffis/fedora-kernel-ia64/.)
We used linux-2.6.tip-xen.hg(cset #30476) and
xen-unstable.hg(cset #10474).

 1. hg clone http://xenbits.xensource.com/ext/linux-2.6.tip-xen.hg
 2. copy xen/include/asm-ia64/asm-xsi-offsets.h 
    from xen-ia64-unstable.hg 
    to linux-2.6.tip-xen.hg/include/asm-ia64/xen/
 3. copy .config 
    from xen-ia64-unstable.hg/buildconfigs/linux-defconfig_xen_ia64
    to linux-2.6.tip-xen/.config
 4. make oldconfig
    (All answers are default)
 5. copy linux-2.6.tip-xen.hg/arch/ia64/kernel/gate.S 
    from linux-2.6.16.13.tar.bz2
 6. cd linux-2.6.tip-xen.hg
    make & copy vmlinuz & mkinitrd
 7. build xen-unstable.hg (cset #10474)
    hg clone xen-unstable.hg xen-unstable.hg-match-linux-2.6.tip
    cd xen-unstable.hg-match-linux.2.6.tip
    hg up -C 10474
    make
 8. copy xen.gz to under /boot/efi/
 9. make install-tools

But I found some problem. Please comments.
A.  We cannot compile the latest linux-2.6.tip-xen(#32966).
    Is fixing linux-2.6.tip-xen fc6's or xen-ia64's contribution?
    Or is anyone already working for that?

B.  linux-2.6.tip-xen don't have arch/ia64/kernel/gate.S. Why?

Best Regards,

Akio Takebe