From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: Xen 4 serial hangs during boot
Date: Tue, 24 Jul 2012 10:40:26 +0100
Message-ID: <500E6D8A.8050907@citrix.com>
References: <CC2F7731.4643E%keir@xen.org> <500DB9CD.5060900@theshore.net>
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To: "Christopher S. Aker" <caker@theshore.net>
Cc: xen devel <xen-devel@lists.xensource.com>, "Keir (Xen.org)" <keir@xen.org>
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On 23/07/12 21:53, Christopher S. Aker wrote:
> On 7/20/12 3:59 PM, Keir Fraser wrote:
>> Then it is Xen doing something to kill the serial interrupt. ;-) I haven't
>> seen anything like this reported before. Not sure what to suggest really...
>> Gather debug output from interrupt-related debug keys (via the xl debug-keys
>> interface) I suppose. I think that would be 'i' and 'z' keys. That plus Xen
>> and dom0 boot logs... something might become apparent.
> We hit this again today, and I grabbed boot and debug-keys output:
>
> http://theshore.net/~caker/xen/BUGS/serial/log.txt
>
> Thanks,
> -Chris

The serial interrupt will be IO-APIC #9 pin 4 which is set with its
vector as 0xf1.

I cant immediately see any other issue with that log unfortunately.

-- 
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com