From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: dom0 crash without any message
Date: Mon, 3 Jun 2013 18:45:25 +0100
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To: William Dauchy <wdauchy@gmail.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>, xen-devel <xen-devel@lists.xen.org>
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On 03/06/13 18:38, William Dauchy wrote:
> Hello
> On Mon, Jun 3, 2013 at 6:37 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote:
>> earlyprintk=xen on the dom0 kernel command line might add something
>> useful to the logs.
> true, I forgot about that option. It's now crashing on "Max apic_id
> exceeded!". Of course the boot continues with nolapic option.
> Do you know how can I workaround that without nolapic option?
>
> --
> William

You need to boot with dom0_max_vcpus=16 or so

If I remember our internal tickets correctly, some PVops gets confused
with more than 16 vcpus.

~Andrew