From: Jan Kiszka <jan.kiszka@siemens.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [PATCH] Reboot CPU on triple fault
Date: Wed, 16 Apr 2008 12:22:18 +0200 [thread overview]
Message-ID: <4805D35A.302@siemens.com> (raw)
In-Reply-To: <4805CC9B.7050809@suse.de>
Kevin Wolf wrote:
> Jamie Lokier schrieb:
>> Kevin Wolf wrote:
>>> And honestly, a message on stderr really shouldn't hurt those 286 folks.
>> For old MS-DOS apps / OSes, I have the impression this can happen
>> hundreds of times per second. It's part of task context switching and
>> BIOS calls.
>
> I have to admit that I'm all but an 286 PM expert. What exactly is a
> triple fault doing there? If it leads to a reset as implemented here, I
> can hardly imagine that it is of much use in regular context switching.
According to my current information, the triple fault will make the
processor issue a shutdown cycle on its external bus. This is obviously
detected by many PC boards, which then issue a hard reset.
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2008-04-16 10:22 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-29 18:13 [Qemu-devel] [PATCH] Reboot CPU on triple fault Hervé Poussineau
2008-03-30 1:36 ` Alexander Graf
2008-03-31 9:52 ` Kevin Wolf
2008-04-15 16:05 ` [Qemu-devel] " Jan Kiszka
2008-04-15 16:57 ` Paul Brook
2008-04-16 8:37 ` Kevin Wolf
2008-04-16 9:23 ` Jamie Lokier
2008-04-16 9:51 ` Antoine Kaufmann
2008-04-16 9:53 ` Kevin Wolf
2008-04-16 10:17 ` Michal Schulz
2008-04-16 10:25 ` Michal Schulz
2008-04-16 12:08 ` Kevin Wolf
2008-04-16 10:22 ` Jan Kiszka [this message]
2008-04-16 11:34 ` Jamie Lokier
2008-04-16 14:44 ` Anthony Liguori
2008-04-16 8:18 ` Kevin Wolf
2008-04-16 12:02 ` Jan Kiszka
2008-04-16 12:09 ` Avi Kivity
2008-04-16 12:36 ` Kevin Wolf
2008-04-16 12:57 ` Jamie Lokier
2008-04-16 12:44 ` [Qemu-devel] [PATCH] x86: Reboot CPU on triple fault - Version 3 Jan Kiszka
2008-04-16 13:35 ` [Qemu-devel] [PATCH] x86: Reboot CPU on triple fault - Version 4 Kevin Wolf
2008-04-16 14:18 ` [Qemu-devel] " Jan Kiszka
2008-04-16 14:33 ` [Qemu-devel] [PATCH] x86: Reboot CPU on triple fault - Version 5 Kevin Wolf
2008-04-16 14:57 ` [Qemu-devel] [PATCH] x86: Reboot CPU on triple fault - Version 6 Kevin Wolf
2008-04-17 9:52 ` [Qemu-devel] " Jan Kiszka
2008-04-18 14:06 ` [Qemu-devel] " Anthony Liguori
2008-04-21 11:53 ` Kevin Wolf
2008-05-26 14:46 ` [Qemu-devel] " Jan Kiszka
2008-05-27 16:01 ` [Qemu-devel] [PATCH] x86: Reboot CPU on triple fault - Version 8 Jan Kiszka
2008-05-27 16:17 ` [Qemu-devel] " Jan Kiszka
2008-04-16 14:37 ` [Qemu-devel] Re: [PATCH] x86: Reboot CPU on triple fault - Version 4 Anthony Liguori
2008-04-17 8:07 ` Jan Kiszka
2008-04-17 12:49 ` Anthony Liguori
2008-04-17 14:10 ` Jan Kiszka
2008-04-17 18:30 ` Anthony Liguori
2008-04-17 19:24 ` Jan Kiszka
2008-04-18 8:38 ` Kevin Wolf
2008-04-18 14:08 ` Anthony Liguori
2008-04-21 9:37 ` Kevin Wolf
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=4805D35A.302@siemens.com \
--to=jan.kiszka@siemens.com \
--cc=qemu-devel@nongnu.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.