From: Roman Zippel <zippel@linux-m68k.org>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux-2.5.17
Date: Wed, 22 May 2002 01:35:11 +0200 [thread overview]
Message-ID: <3CEAD9AF.9F6FD0FC@linux-m68k.org> (raw)
In-Reply-To: <Pine.LNX.4.33.0205211144180.3073-100000@penguin.transmeta.com>
Hi,
Linus Torvalds wrote:
> If you care, the reason we need to do this on x86 is that the TLB walker
> is speculative and almost totally asynchronous wrt the rest of the CPU
> core, so we may have a CPU "TLB lookup thread" goin on in parallel with
> the TLB cleaning - and that TLB lookup may have looked up the pmd contents
> already but not resolved the entry yet. Which is why we have to
> synchronize the PMD freeing with the TLB flush - the same way we already
> have to do it for the regular data pages.
Alternative suggestion: remove the present bit from the pgd/pmd entry.
After you flushed the tlb, you can clean up the page tables without a
hurry. That will work on any sane system and you don't have to force
data and table pages into the same interface.
bye, Roman
next prev parent reply other threads:[~2002-05-21 23:36 UTC|newest]
Thread overview: 142+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-21 5:16 Linux-2.5.17 Linus Torvalds
2002-05-21 13:58 ` Linux-2.5.17 Roman Zippel
2002-05-21 16:06 ` Linux-2.5.17 Linus Torvalds
2002-05-21 18:36 ` Linux-2.5.17 Roman Zippel
2002-05-21 18:53 ` Linux-2.5.17 Linus Torvalds
2002-05-21 23:35 ` Roman Zippel [this message]
2002-05-22 0:10 ` Linux-2.5.17 Linus Torvalds
2002-05-22 0:31 ` Linux-2.5.17 Roman Zippel
2002-05-22 0:54 ` Linux-2.5.17 Linus Torvalds
2002-05-22 2:17 ` Linux-2.5.17 David S. Miller
2002-05-22 2:40 ` Linux-2.5.17 Linus Torvalds
2002-05-22 2:57 ` Linux-2.5.17 David S. Miller
2002-05-22 3:21 ` Linux-2.5.17 Linus Torvalds
2002-05-22 8:06 ` Linux-2.5.17 David Lang
2002-05-22 14:14 ` Linux-2.5.17 Dave McCracken
2002-05-22 16:10 ` Linux-2.5.17 Linus Torvalds
2002-05-22 13:45 ` Linux-2.5.17 Roman Zippel
2002-05-22 16:08 ` Linux-2.5.17 Linus Torvalds
2002-05-21 15:32 ` [PATCH] 2.5.17 IDE 65 Martin Dalecki
2002-05-21 16:59 ` Linus Torvalds
2002-05-21 16:35 ` Martin Dalecki
2002-05-21 17:56 ` Linus Torvalds
2002-05-21 18:49 ` Alan Cox
2002-05-21 20:08 ` Vojtech Pavlik
2002-05-21 23:28 ` Linus Torvalds
2002-05-22 6:53 ` Martin Dalecki
2002-05-23 7:01 ` Kai Henningsen
2002-05-22 7:16 ` [PATCH] 2.5.17 IDE 66 Martin Dalecki
2002-05-22 7:19 ` [PATCH] 2.5.17 IDE 67 Martin Dalecki
2002-05-22 17:13 ` Tom Rini
2002-05-22 16:21 ` Martin Dalecki
2002-05-22 17:31 ` Tom Rini
2002-05-22 16:40 ` Martin Dalecki
2002-05-22 18:47 ` Tom Rini
2002-05-23 6:08 ` Martin Dalecki
2002-05-23 15:26 ` Tom Rini
2002-05-23 14:32 ` Martin Dalecki
2002-05-23 15:40 ` Tom Rini
2002-05-22 7:23 ` [PATCH] 2.5.16 IDE 68 Martin Dalecki
2002-05-22 10:48 ` Juan Quintela
2002-05-22 9:45 ` Martin Dalecki
2002-05-22 15:55 ` Linus Torvalds
2002-05-22 15:03 ` Martin Dalecki
2002-05-22 9:05 ` [PATCH] 2.5.17 /dev/ports Martin Dalecki
2002-05-22 10:42 ` Paul Mackerras
2002-05-22 9:46 ` Martin Dalecki
2002-05-22 10:54 ` David S. Miller
2002-05-22 10:13 ` Martin Dalecki
2002-05-22 11:26 ` Russell King
2002-05-22 10:40 ` Martin Dalecki
2002-05-22 11:58 ` Richard B. Johnson
2002-05-22 12:36 ` Russell King
2002-05-22 13:23 ` Alan Cox
2002-05-22 12:31 ` Martin Dalecki
2002-05-22 12:44 ` Alan Cox
2002-05-22 12:32 ` Martin Dalecki
2002-05-22 15:05 ` Alan Cox
2002-05-22 13:05 ` Alan Cox
2002-05-22 12:38 ` Martin Dalecki
2002-05-22 15:04 ` Alan Cox
2002-05-22 13:53 ` Martin Dalecki
2002-05-22 15:03 ` Lars Marowsky-Bree
2002-05-22 15:07 ` Padraig Brady
2002-05-22 14:07 ` Martin Dalecki
2002-05-22 15:21 ` Dave Jones
2002-05-22 15:19 ` Dave Jones
2002-05-22 15:31 ` Alan Cox
2002-05-27 9:04 ` Pavel Machek
2002-05-22 14:54 ` Alexander Viro
2002-05-22 15:24 ` Alan Cox
2002-05-22 15:10 ` Alexander Viro
2002-07-22 12:20 ` Ruth Ivimey-Cook
2002-05-23 7:30 ` Rusty Russell
2002-05-23 6:44 ` Martin Dalecki
2002-05-23 8:26 ` Rusty Russell
2002-05-22 13:16 ` Padraig Brady
2002-05-22 12:30 ` Martin Dalecki
2002-05-22 13:50 ` Sebastian Droege
2002-05-22 13:52 ` Alan Cox
2002-05-22 13:49 ` Vojtech Pavlik
2002-05-22 12:51 ` Martin Dalecki
2002-05-22 13:56 ` Vojtech Pavlik
2002-05-22 14:58 ` Alan Cox
2002-05-22 13:49 ` Martin Dalecki
2002-05-22 14:42 ` Vojtech Pavlik
2002-05-22 13:59 ` Alexander Viro
2002-05-22 13:12 ` Martin Dalecki
2002-05-22 14:33 ` Alexander Viro
2002-05-22 13:40 ` Martin Dalecki
2002-05-22 13:16 ` Martin Dalecki
2002-05-22 14:34 ` Alexander Viro
2002-05-22 16:31 ` James Simmons
2002-05-22 14:12 ` Vojtech Pavlik
2002-05-27 9:07 ` Pavel Machek
2002-05-22 15:00 ` Alan Cox
2002-05-22 14:43 ` Vojtech Pavlik
2002-05-22 16:28 ` Linus Torvalds
2002-05-22 17:22 ` Alan Cox
2002-05-22 16:17 ` Martin Dalecki
2002-05-22 17:30 ` Russell King
2002-05-22 16:36 ` Martin Dalecki
2002-05-22 17:36 ` Alexander Viro
2002-05-22 17:46 ` Alan Cox
2002-05-26 13:53 ` Riley Williams
2002-05-26 15:28 ` Vojtech Pavlik
2002-05-26 15:39 ` Riley Williams
2002-05-23 10:10 ` Martin Diehl
2002-05-22 10:54 ` Linux-2.5.17 Martin Dalecki
2002-05-22 12:04 ` Linux-2.5.17 Alexander Viro
2002-05-22 13:07 ` Linux-2.5.17 Martin Dalecki
2002-05-22 14:38 ` Linux-2.5.17 Alexander Viro
2002-05-22 13:42 ` Linux-2.5.17 Martin Dalecki
2002-05-22 16:55 ` Linux-2.5.17 Jan Kara
2002-05-22 12:14 ` Linux-2.5.17 Russell King
2002-05-22 12:36 ` Linux-2.5.17 Martin Dalecki
2002-05-22 16:02 ` Linux-2.5.17 Linus Torvalds
2002-05-22 15:04 ` Linux-2.5.17 Martin Dalecki
2002-05-22 16:58 ` Linux-2.5.17 Jan Kara
2002-05-22 16:08 ` Linux-2.5.17 Martin Dalecki
2002-05-22 17:56 ` Linux-2.5.17 Jan Kara
2002-05-22 16:56 ` Linux-2.5.17 Martin Dalecki
2002-05-22 18:17 ` Linux-2.5.17 Jan Kara
2002-05-22 18:36 ` Linux-2.5.17 Russell King
2002-05-22 13:06 ` Linux-2.5.17 Alan Cox
2002-05-22 11:19 ` Linux-2.5.17 Russell King
2002-05-22 11:27 ` Linux-2.5.17 David S. Miller
2002-05-22 16:23 ` Linux-2.5.17 Linus Torvalds
2002-05-22 17:31 ` [PATCH] 2.5.17 IDE 69 Martin Dalecki
2002-05-23 7:32 ` [PATCH] 2.5.17 sysvipc (AKA: spoiling oil in to the flames) Martin Dalecki
2002-05-24 13:59 ` Linux-2.5.17 Martin Dalecki
2002-05-24 14:23 ` [PATCH] 2.5.17 IDE 70 Martin Dalecki
-- strict thread matches above, loose matches on Subject: below --
2002-05-21 18:52 Linux-2.5.17 Wayne.Brown
2002-05-21 21:30 ` Linux-2.5.17 David S. Miller
2002-05-22 7:36 ` Linux-2.5.17 Helge Hafting
2002-05-21 23:20 Linux-2.5.17 Wayne.Brown
2002-05-21 23:29 ` Linux-2.5.17 Russell King
2002-05-21 23:33 ` Linux-2.5.17 Joel Jaeggli
2002-05-22 3:02 Linux-2.5.17 Wayne.Brown
2002-05-22 7:12 ` Linux-2.5.17 Zwane Mwaikambo
2002-05-22 11:49 ` Linux-2.5.17 Nick Holloway
2002-05-22 20:00 Linux-2.5.17 Wayne.Brown
2002-05-23 12:17 ` Linux-2.5.17 Nick Holloway
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