[gentoo-user] Xen-4.1 + Gentoo-Sources 3.0.6 in Dom0 = no blktap

[gentoo-user] Xen-4.1 + Gentoo-Sources 3.0.6 in Dom0 = no blktap

[Konstantinos Agouros]

Hi,

I am using Xen 3.4.2 with xensources for Dom0 and DomU at the moment.
Now I tried to upgrade on a testsystem to 4.1.1 and a 3.0.6 Kernel
for Dom0. The problem is, since there is no blktap driver in the 
3.0.6 Kernel I have to fall back to file:// instead of tap:aio for the
disks for the guests. Anybody knows a way around this?

Also I tried a 3.0.6 as a DomU kernel but this panics during boot time
with:

[    0.335389] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180 seconds,
margin is 60 seconds).
[    0.335411] Hangcheck: Using getrawmonotonic().
[    0.336220] ------------[ cut here ]------------
[    0.336236] WARNING: at arch/x86/xen/mmu.c:486
xen_make_pte_debug+0xa0/0xfa()
[    0.336248] 0xfed40000 is using VM_IO, but it is 0xfffffffffffff000!
[    0.336259] Modules linked in:
[    0.336278] Pid: 1, comm: swapper Not tainted 3.0.6-gentoodomU #1
[    0.336289] Call Trace:
[    0.336309]  [<ffffffff8103bc74>] warn_slowpath_common+0x80/0x98
[    0.336327]  [<ffffffff8103bd20>] warn_slowpath_fmt+0x41/0x43
[    0.336344]  [<ffffffff81005999>] xen_make_pte_debug+0xa0/0xfa

Somebody can hint me, what in the Kernel-Config of the DomU kernel
might be wrong here? Xen-Sources 2.6.38 boots in this setup.

Regards,

Konstantin
-- 
Dipl-Inf. Konstantin Agouros aka Elwood Blues. Internet: elwood@agouros.de
Altersheimerstr. 1, 81545 Muenchen, Germany. Tel +49 89 69370185
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