From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: Boot time trap handling
Date: Mon, 12 May 2014 14:01:14 +0100
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To: Jan Beulich <JBeulich@suse.com>
Cc: TimDeegan <tim@xen.org>, Keir Fraser <keir@xen.org>, Xen-devel List <xen-devel@lists.xen.org>
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On 12/05/14 13:59, Jan Beulich wrote:
>>>> On 12.05.14 at 14:53, <andrew.cooper3@citrix.com> wrote:
>> One point I forgot to say was that I plan to leave the reserved
>> exception vectors with non-present descriptors.  This way we get a fatal
>> GPF indicating the exact vector, rather than a PCPU lockup optionally
>> followed by an NMI watchdog timeout when another pcpu times out waiting
>> for the locked up pcpu to rendezvous in the time calibration code.
> This I'm not sure about. Replacing the simplistic handler is a must of
> course, but I would tend towards a generic exception handler wired
> up to fatal_trap() rather than having to decode the #GP error code
> to understand what's going on.
>
> Jan
>

Ok - I will make a formal entry point for each of the reserved exceptions.

~Andrew