From: Ingo Molnar <mingo@elte.hu>
To: Scott Garfinkle <scotteglist@gmail.com>
Cc: linux-kernel@vger.kernel.org, Matt Mackall <mpm@selenic.com>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH 7/15] misc: Make x86 doublefault handling optional
Date: Mon, 12 Dec 2005 11:36:11 +0100 [thread overview]
Message-ID: <20051212103611.GA6416@elte.hu> (raw)
In-Reply-To: <f1079b100511161121g1997cfb4jc8e8aec5072c1d92@mail.gmail.com>
* Scott Garfinkle <scotteglist@gmail.com> wrote:
> I tend to agree with the spirit of Andi's comment -- disabling this
> will (I think) make the rare time when it happens into something
> impossible to debug without a new kernel and reproducing the problem.
in the past couple of years i saw double-faults at a rate of perhaps
once a year - and i frequently hack lowlevel glue code! So the
usefulness of this code in the field, and especially on an embedded
platforms, is extremely limited.
in fact, i've experienced triple-faults (== spontaneous reboots) to be
at least 10 times more frequent than double-faults! I.e. _if_ your
kernel (or hardware) is screwed up to the degree that it would
double-fault, it will much more likely also triple-fault.
IIRC we added the double-fault handler to debug the PAE code originally.
Now years down the road, making it configurable-out if EMBEDDED makes
lots of sense.
Ingo
next prev parent reply other threads:[~2005-12-12 10:37 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-11 8:35 [PATCH 0/15] misc: Miscellaneous bits from -tiny Matt Mackall
2005-11-11 8:35 ` [PATCH 1/15] misc: Add bloat-o-meter to scripts Matt Mackall
2005-11-11 8:35 ` [PATCH 2/15] misc: Uninline some namei.c functions Matt Mackall
2005-11-11 8:35 ` [PATCH 3/15] misc: Uninline some open.c functions Matt Mackall
2005-11-11 8:35 ` [PATCH 4/15] misc: Uninline some inode.c functions Matt Mackall
2005-11-11 8:35 ` [PATCH 5/15] misc: Uninline some fslocks.c functions Matt Mackall
2005-11-11 8:35 ` [PATCH 6/15] misc: Trim non-IPX builds Matt Mackall
2005-11-11 8:35 ` [PATCH 7/15] misc: Make x86 doublefault handling optional Matt Mackall
2005-11-11 8:35 ` [PATCH 8/15] misc: Make vm86 support optional Matt Mackall
2005-11-11 8:35 ` [PATCH 9/15] misc: Make sysenter " Matt Mackall
2005-11-11 8:35 ` [PATCH 10/15] misc: Make *[ug]id16 " Matt Mackall
2005-11-11 8:35 ` [PATCH 11/15] misc: Allow dropping panic text strings from kernel image Matt Mackall
2005-11-11 8:35 ` [PATCH 12/15] misc: Configurable panic support Matt Mackall
2005-11-11 8:35 ` [PATCH 13/15] misc: Configure ELF core dump support Matt Mackall
2005-11-11 8:35 ` [PATCH 14/15] misc: Configurable number of supported IDE interfaces Matt Mackall
2005-11-11 8:35 ` [PATCH 15/15] misc: Configurable support for PCI serial ports Matt Mackall
2005-11-11 11:03 ` Geert Uytterhoeven
2006-01-07 16:50 ` Russell King
2006-01-08 2:26 ` Matt Mackall
2005-11-11 10:14 ` [PATCH 14/15] misc: Configurable number of supported IDE interfaces Bartlomiej Zolnierkiewicz
2005-11-11 17:18 ` Matt Mackall
2005-11-11 17:34 ` Roman Zippel
2005-11-11 17:37 ` Matt Mackall
2005-11-11 17:47 ` Matt Mackall
2005-11-11 17:49 ` Roman Zippel
2005-11-11 11:03 ` [PATCH 11/15] misc: Allow dropping panic text strings from kernel image Geert Uytterhoeven
2005-11-11 17:21 ` Matt Mackall
2005-11-12 6:06 ` Andrew Morton
2005-11-11 10:22 ` [PATCH 10/15] misc: Make *[ug]id16 support optional Geert Uytterhoeven
2005-11-16 13:21 ` Rob Landley
2005-11-16 18:01 ` Matt Mackall
2005-12-20 15:46 ` Zdenek Pavlas
2005-12-20 16:50 ` Rob Landley
2005-12-21 17:30 ` Zdenek Pavlas
2005-11-12 5:57 ` [PATCH 9/15] misc: Make sysenter " Andrew Morton
2005-11-12 5:55 ` [PATCH 8/15] misc: Make vm86 " Andrew Morton
2005-11-13 3:30 ` [PATCH 7/15] misc: Make x86 doublefault handling optional Andi Kleen
2005-11-16 13:13 ` Rob Landley
2005-11-16 18:21 ` Matt Mackall
2005-11-16 19:21 ` Scott Garfinkle
2005-11-16 19:45 ` Adrian Bunk
2005-12-12 10:36 ` Ingo Molnar [this message]
2005-12-12 16:22 ` Andi Kleen
2005-12-12 15:32 ` Matt Mackall
2005-12-13 8:39 ` Ingo Molnar
2005-11-14 1:57 ` [PATCH 6/15] misc: Trim non-IPX builds Adrian Bunk
2005-11-18 5:22 ` [2.6 patch] move some code to net/ipx/af_ipx.c Adrian Bunk
2005-11-18 17:27 ` Matt Mackall
2005-11-18 20:24 ` Arnaldo Carvalho de Melo
2005-12-05 21:35 ` Adrian Bunk
[not found] <57CC5-7cD-21@gated-at.bofh.it>
[not found] ` <57CC5-7cD-19@gated-at.bofh.it>
[not found] ` <58gSR-6FB-13@gated-at.bofh.it>
2005-11-14 0:33 ` [PATCH 7/15] misc: Make x86 doublefault handling optional Bodo Eggert
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=20051212103611.GA6416@elte.hu \
--to=mingo@elte.hu \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mpm@selenic.com \
--cc=scotteglist@gmail.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox