From: Timothy Miller <miller@techsource.com>
To: Luca Veraldi <luca.veraldi@katamail.com>
Cc: Arjan van de Ven <arjanv@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Efficient IPC mechanism on Linux
Date: Fri, 12 Sep 2003 14:41:25 -0400 [thread overview]
Message-ID: <3F621355.3050009@techsource.com> (raw)
In-Reply-To: 024601c37785$e3e07680$5aaf7450@wssupremo
Luca Veraldi wrote:
>
> Sorry, but I cannot believe it.
> Reading a page tagle entry and storing in into a struct capability is not
> comparable at all with the "for" needed to move bytes all around memory.
Pardon my ignorance here, but the impression I get is that changing a
page table entry is not as simple as just writing to a bit somewhere. I
suppose it is if the page descriptor is not loaded into the TLB, but if
it is, then you have to ensure that the TLB entry matches the page
table; this may not be a quick operation.
I can think of a lot of other possible complications to this.
next prev parent reply other threads:[~2003-09-12 18:19 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-09 17:30 Efficient IPC mechanism on Linux Luca Veraldi
2003-09-09 21:17 ` Alan Cox
2003-09-09 21:57 ` Luca Veraldi
2003-09-09 23:11 ` Alan Cox
2003-09-10 9:04 ` Luca Veraldi
2003-09-10 12:56 ` Alan Cox
[not found] ` <20030909175821.GL16080@Synopsys.COM>
[not found] ` <001d01c37703$8edc10e0$36af7450@wssupremo>
[not found] ` <20030910064508.GA25795@Synopsys.COM>
2003-09-10 9:18 ` Luca Veraldi
2003-09-10 9:23 ` Arjan van de Ven
2003-09-10 9:40 ` Luca Veraldi
2003-09-10 9:44 ` Arjan van de Ven
2003-09-10 10:09 ` Luca Veraldi
2003-09-10 10:14 ` Arjan van de Ven
2003-09-10 10:25 ` Luca Veraldi
2003-09-12 18:41 ` Timothy Miller [this message]
2003-09-12 19:05 ` Luca Veraldi
2003-09-12 22:37 ` Alan Cox
2003-09-10 12:50 ` Alan Cox
2003-09-10 19:16 ` Shawn
2003-09-10 20:05 ` Rik van Riel
2003-09-17 9:52 ` Rik's list of CS challenges Terje Eggestad
2003-09-17 13:40 ` Alan Cox
2003-09-18 8:26 ` Helge Hafting
2003-09-10 12:47 ` Efficient IPC mechanism on Linux Alan Cox
2003-09-10 13:56 ` Luca Veraldi
2003-09-10 15:59 ` Alan Cox
2003-09-10 9:52 ` Jamie Lokier
2003-09-10 10:07 ` Arjan van de Ven
2003-09-10 10:17 ` Luca Veraldi
2003-09-10 10:37 ` Jamie Lokier
2003-09-10 10:41 ` Arjan van de Ven
2003-09-10 10:54 ` Luca Veraldi
2003-09-10 10:54 ` Arjan van de Ven
2003-09-10 11:16 ` Nick Piggin
2003-09-10 11:30 ` Luca Veraldi
2003-09-10 11:44 ` Nick Piggin
2003-09-10 12:14 ` Luca Veraldi
2003-09-10 12:42 ` Alan Cox
2003-09-10 10:11 ` Luca Veraldi
2003-09-10 19:24 ` Pavel Machek
2003-09-10 19:40 ` Jamie Lokier
2003-09-10 21:35 ` Pavel Machek
2003-09-10 22:06 ` Jamie Lokier
2003-09-10 11:52 ` Alex Riesen
2003-09-10 12:14 ` Luca Veraldi
2003-09-10 12:11 ` Alex Riesen
2003-09-10 12:29 ` Luca Veraldi
2003-09-10 12:28 ` Alex Riesen
2003-09-10 12:36 ` Luca Veraldi
2003-09-10 12:36 ` Alex Riesen
2003-09-10 13:33 ` Gábor Lénárt
2003-09-10 14:04 ` Luca Veraldi
2003-09-10 14:21 ` Stewart Smith
2003-09-10 14:39 ` Luca Veraldi
2003-09-10 16:59 ` Andrea Arcangeli
2003-09-10 17:05 ` Andrea Arcangeli
2003-09-10 17:21 ` Luca Veraldi
2003-09-10 17:41 ` Andrea Arcangeli
2003-09-10 17:39 ` Martin Konold
2003-09-10 18:01 ` Andrea Arcangeli
2003-09-10 18:05 ` Martin Konold
2003-09-10 18:31 ` Chris Friesen
2003-09-10 18:08 ` Inappropriate signatures Larry McVoy
2003-09-10 18:52 ` Jamie Lokier
2003-09-10 19:54 ` rsync head? [was inappropriate signatures] Joe Perches
2003-09-13 15:39 ` Inappropriate signatures Pavel Machek
2003-09-13 16:49 ` Larry McVoy
-- strict thread matches above, loose matches on Subject: below --
2003-09-09 18:59 Efficient IPC mechanism on Linux Luca Veraldi
2003-09-09 22:15 Luca Veraldi
[not found] <F71B37536F3B3D4FA521FEC7FCA17933164A@twinsrv.twinox.se>
2003-09-10 10:36 ` Luca Veraldi
[not found] <E19x3el-0002Fc-Rj@phoenix.hadiko.de>
2003-09-10 12:16 ` Luca Veraldi
2003-09-10 14:53 ` Larry McVoy
[not found] <fa.h06p421.1s00ojt@ifi.uio.no>
[not found] ` <fa.gc37hsp.34id89@ifi.uio.no>
[not found] ` <E19x47V-0002JG-J8@phoenix.hadiko.de>
2003-09-10 12:45 ` Luca Veraldi
[not found] <u9j3.1VB.27@gated-at.bofh.it>
[not found] ` <u9j3.1VB.29@gated-at.bofh.it>
[not found] ` <u9j3.1VB.31@gated-at.bofh.it>
[not found] ` <u9j3.1VB.25@gated-at.bofh.it>
[not found] ` <ubNY.5Ma.19@gated-at.bofh.it>
[not found] ` <uc79.6lg.13@gated-at.bofh.it>
[not found] ` <uc7d.6lg.23@gated-at.bofh.it>
[not found] ` <uch0.6zx.17@gated-at.bofh.it>
[not found] ` <ucqs.6NC.3@gated-at.bofh.it>
[not found] ` <ucqy.6NC.19@gated-at.bofh.it>
[not found] ` <udmB.8eZ.15@gated-at.bofh.it>
[not found] ` <udPF.BD.11@gated-at.bofh.it>
[not found] ` <3F5F37CD.6060808@softhome.net>
2003-09-10 15:28 ` Luca Veraldi
2003-09-10 18:41 Manfred Spraul
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