Re: [Xen-devel] Xen 3.1.2 + 2.6.23.8 == traps.c:403:d0 Unhandled

To:	Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject:	Re: [Xen-devel] Xen 3.1.2 + 2.6.23.8 == traps.c:403:d0 Unhandled invalid opcode fault/trap [#6] in domain 0 on VCPU 0 [ec=0000]
From:	Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date:	Tue, 20 Nov 2007 07:11:01 -0800
Cc:	xen devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Keir Fraser wrote:
> Two compounded problems. Firstly, the 2.6.23 Xen support only works as domU,
> not as dom0. Secondly, because the dom0 domain builder inside Xen sets a
> 'magic' string in start_info as 'xen-3.1-...' rather than 'xen-3.0-...' as
> the user-space domain builder does, the 2.6.23 kernel BUG_ON()s very very
> early when run as dom0.
>
> I've cc'ed Jeremy as I believe the BUG_ON() should simply be got rid of (or
> at least should perhaps only check for the 'xen-' prefix).

Fair enough.  I was wondering what it actually means: is it just a
hypervisor version string, or is it a hypervisor ABI signature?  Could I
reasonably check for "xen-3", or will Xen 4.x put something else there?

    J

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