From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: TimDeegan <tim@xen.org>, Keir Fraser <keir@xen.org>,
Xen-devel List <xen-devel@lists.xen.org>
Subject: Re: Boot time trap handling
Date: Mon, 12 May 2014 14:01:14 +0100 [thread overview]
Message-ID: <5370C61A.4000505@citrix.com> (raw)
In-Reply-To: <5370E1B70200007800011690@mail.emea.novell.com>
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
prev parent reply other threads:[~2014-05-12 13:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-12 10:40 Boot time trap handling Andrew Cooper
2014-05-12 12:09 ` Jan Beulich
2014-05-12 12:53 ` Andrew Cooper
2014-05-12 12:59 ` Jan Beulich
2014-05-12 13:01 ` Andrew Cooper [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5370C61A.4000505@citrix.com \
--to=andrew.cooper3@citrix.com \
--cc=JBeulich@suse.com \
--cc=keir@xen.org \
--cc=tim@xen.org \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.