From: Kevin Wolf <kwolf@suse.de>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH] Reboot CPU on triple fault
Date: Wed, 16 Apr 2008 14:08:34 +0200 [thread overview]
Message-ID: <4805EC42.7060909@suse.de> (raw)
In-Reply-To: <200804161217.33019.michal.schulz@gmx.de>
Michal Schulz schrieb:
> A software which tries to go back from protected to
> real mode sets the warm-reset vector in BIOS memory area, sets the reboot
> reason variable in CMOS memory and issues a CPU reset.
Oh, I see. The modification of the BIOS memory area is the piece I
missed. Now this makes much more sense.
Still the questions remains what to do with triple faults wrt logging. I
understand that in 286 PM there might be masses of faults which nobody
is interested in. On the other hand, I'd really hate to have no output
when my code crashes with a triple fault and I haven't enabled -d int.
Maybe we can check if this vector has been modified? If not, the triple
fault certainly wouldn't be an intended usage of a "feature".
Kevin
next prev parent reply other threads:[~2008-04-16 12:13 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 [this message]
2008-04-16 10:22 ` Jan Kiszka
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
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