From: Mark Lord <lkml@rtr.ca>
To: Daniel Phillips <phillips@istop.com>
Cc: Giridhar Pemmasani <giri@lmc.cs.sunysb.edu>,
linux-kernel@vger.kernel.org, Andi Kleen <ak@suse.de>
Subject: Re: RFC: i386: kill !4KSTACKS
Date: Tue, 06 Sep 2005 21:59:22 -0400 [thread overview]
Message-ID: <431E497A.4080303@rtr.ca> (raw)
In-Reply-To: <200509061819.45567.phillips@istop.com>
Daniel Phillips wrote:
> There are only two stacks involved, the normal kernel stack and your new ndis
> stack. You save ESP of the kernel stack at the base of the ndis stack. When
> the Windows code calls your api, you get the ndis ESP, load the kernel ESP
> from the base of the ndis stack, push the ndis ESP so you can get back to the
> ndis code later, and continue on your merry way.
With CONFIG_PREEMPT, this will still cause trouble due to lack
of "current" task info on the NDIS stack.
One option is to copy (duplicate) the bottom-of-stack info when
switching to the NDIS stack.
Another option is to stick a Mutex around any use of the NDIS stack
when calling into the foreign driver (might be done like this already??),
which will prevent PREEMPTion during the call.
Cheers
next prev parent reply other threads:[~2005-09-07 1:59 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-04 14:51 RFC: i386: kill !4KSTACKS Alex Davis
2005-09-04 17:11 ` Stefan Smietanowski
2005-09-04 17:11 ` Dr. David Alan Gilbert
2005-09-04 17:19 ` Alan Cox
2005-09-06 4:37 ` Andi Kleen
2005-09-06 6:39 ` Denis Vlasenko
2005-09-06 7:13 ` Andi Kleen
2005-09-06 7:32 ` Nick Piggin
2005-09-06 7:50 ` Andi Kleen
2005-09-06 13:29 ` Diego Calleja
2005-09-06 13:25 ` Giridhar Pemmasani
2005-09-06 17:05 ` Jan Kiszka
2005-09-06 17:23 ` Giridhar Pemmasani
2005-09-06 18:42 ` linux-os (Dick Johnson)
2005-09-06 18:46 ` viro
2005-09-06 19:42 ` Jan Kiszka
2005-09-06 20:21 ` linux-os (Dick Johnson)
2005-09-07 17:46 ` Bill Davidsen
2005-09-07 17:54 ` Jan Kiszka
2005-09-07 19:52 ` Daniel Phillips
2005-09-07 20:17 ` Daniel Phillips
2005-09-07 20:29 ` Jan Kiszka
2005-09-07 20:28 ` Jan Kiszka
2005-09-07 21:57 ` Giridhar Pemmasani
2005-09-07 23:25 ` Jan Kiszka
2005-09-08 1:06 ` Giridhar Pemmasani
2005-09-08 19:43 ` Bill Davidsen
2005-09-06 22:19 ` Daniel Phillips
2005-09-06 22:21 ` Andi Kleen
2005-09-06 22:36 ` Daniel Phillips
2005-09-06 23:40 ` Steven Rostedt
2005-09-06 22:28 ` Roland Dreier
2005-09-07 0:04 ` Daniel Phillips
2005-09-06 22:42 ` Giridhar Pemmasani
2005-09-07 1:59 ` Mark Lord [this message]
2005-09-07 3:46 ` Lee Revell
2005-09-07 4:16 ` Daniel Phillips
2005-09-07 5:48 ` Daniel Phillips
2005-09-07 16:43 ` Bill Davidsen
2005-09-08 0:44 ` Alex Davis
-- strict thread matches above, loose matches on Subject: below --
2005-09-06 10:29 Chuck Ebbert
2005-09-05 2:00 Alex Davis
2005-09-05 2:07 ` Sean
2005-09-05 2:29 ` Alex Davis
2005-09-05 3:00 ` Sean
2005-09-05 3:41 ` Alex Davis
2005-09-05 3:51 ` Sean
2005-09-05 4:03 ` Alex Davis
2005-09-05 4:12 ` Sean
2005-09-05 4:36 ` Willy Tarreau
2005-09-05 4:47 ` Sean
2005-09-05 5:01 ` Willy Tarreau
2005-09-05 5:31 ` Sean
2005-09-05 6:04 ` Willy Tarreau
2005-09-05 6:20 ` Sean
2005-09-05 6:29 ` Pekka Enberg
2005-09-05 15:29 ` Horst von Brand
2005-09-08 20:18 ` Bill Davidsen
2005-09-08 22:51 ` Sean
2005-09-05 6:41 ` Sander
2005-09-05 8:01 ` Willy Tarreau
2005-09-08 20:01 ` Bill Davidsen
2005-09-08 20:24 ` Christopher Friesen
2005-09-05 3:54 ` Kyle Moffett
2005-09-05 4:26 ` Dave Jones
2005-09-05 4:48 ` Willy Tarreau
2005-09-06 17:04 ` Benjamin LaHaise
2005-09-05 1:30 Alex Davis
2005-09-05 1:41 ` Adrian Bunk
2005-09-05 1:56 ` dean gaudet
[not found] <4I7UM-M1-1@gated-at.bofh.it>
[not found] ` <4ITG4-8nH-1@gated-at.bofh.it>
[not found] ` <4J1DC-2NU-1@gated-at.bofh.it>
2005-09-04 17:33 ` Robert Hancock
[not found] <4IcUz-7H2-27@gated-at.bofh.it>
[not found] ` <4J2gx-3zf-3@gated-at.bofh.it>
[not found] ` <4J5R1-cH-21@gated-at.bofh.it>
[not found] ` <4J6ao-L9-21@gated-at.bofh.it>
[not found] ` <4J6jZ-Xg-11@gated-at.bofh.it>
[not found] ` <4J8vt-43Y-13@gated-at.bofh.it>
2005-09-02 6:08 ` Alex Davis
2005-09-04 12:49 ` Denis Vlasenko
2005-09-04 13:30 ` Ed Tomlinson
2005-09-04 14:49 ` Alan Cox
2005-09-04 16:44 ` Paul Misner
2005-09-04 17:07 ` Pekka Enberg
2005-09-04 17:12 ` Bas Westerbaan
2005-09-04 19:22 ` Horst von Brand
2005-09-04 19:33 ` Adrian Bunk
2005-09-04 20:13 ` Bas Westerbaan
2005-09-04 20:37 ` Dave Jones
2005-09-07 16:38 ` Bill Davidsen
2005-09-07 17:53 ` Mike Galbraith
2005-09-08 19:05 ` Bill Davidsen
2005-09-05 22:32 ` Thorild Selen
2005-09-05 23:06 ` Kyle Moffett
2005-09-02 0:39 Adrian Bunk
2005-09-02 5:33 ` Chris Wedgwood
2005-09-02 6:29 ` Nathan Scott
2005-09-02 6:40 ` Neil Brown
2005-09-13 8:05 ` Alexander Nyberg
2005-10-01 22:50 ` Adrian Bunk
2005-10-02 20:35 ` Nathan Scott
2005-09-02 6:55 ` Vladimir V. Saveliev
2005-09-02 21:58 ` Hans Reiser
2005-09-04 3:48 ` Lee Revell
2005-09-04 7:36 ` Stefan Smietanowski
2005-09-04 8:23 ` Lee Revell
2005-09-04 19:39 ` Adrian Bunk
2005-09-04 12:12 ` Guillaume Chazarain
2005-09-04 13:26 ` Sander
2005-06-08 12:35 Ian Kumlien
2005-06-08 13:14 ` Denis Vlasenko
2005-06-07 21:27 Adrian Bunk
2005-06-07 21:47 ` Alexander Nyberg
2005-06-08 10:03 ` Jörn Engel
2005-06-08 10:39 ` Denis Vlasenko
2005-06-08 11:12 ` Adrian Bunk
2005-06-08 12:13 ` Denis Vlasenko
2005-07-04 18:22 ` Adrian Bunk
2005-07-05 6:14 ` Denis Vlasenko
2005-07-05 13:46 ` Horst von Brand
2005-06-08 1:52 ` Ian Kent
2005-06-08 10:42 ` Denis Vlasenko
2005-06-08 14:28 ` raven
2005-06-08 12:00 ` Vladimir Saveliev
2005-06-10 15:18 ` Vladimir Saveliev
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