From: Jeff Garzik <jgarzik@pobox.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Vladimir Kondratiev <vladimir.kondratiev@intel.com>,
linux-kernel@vger.kernel.org, Alan Cox <alan@redhat.com>,
Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: PCI Express support for 2.4 kernel
Date: Mon, 15 Dec 2003 23:53:38 -0500 [thread overview]
Message-ID: <3FDE8FD2.2070801@pobox.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0312151359300.1631@home.osdl.org>
Linus Torvalds wrote:
> On Mon, 15 Dec 2003, Jeff Garzik wrote:
>>neat. dumb question though... how portable is set_fixmap_nocache()?
> Not very. Although it should generally be trivial to port if you need it.
[...]
> On 64-bit architectures you're not likely to ever need to worry about it,
> and then you can just map the whole thing directly (and use some special
> large-page mapping for it, at that).
Yeah, good point. IA64 with its 1001 different types of mappings and
zones can go crazy, for example.
Sounds like PCI express needs a per-architecture policy for mapping the
256MB region. Some [64b] arches can direct-map the entire area. IA32
and others can go another route.
Jeff
next prev parent reply other threads:[~2003-12-16 4:53 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-14 17:28 PCI Express support for 2.4 kernel Vladimir Kondratiev
2003-12-15 7:48 ` Christoph Hellwig
2003-12-15 18:26 ` Linus Torvalds
2003-12-15 20:03 ` Jeff Garzik
2003-12-15 22:00 ` Linus Torvalds
2003-12-16 4:53 ` Jeff Garzik [this message]
2003-12-15 20:21 ` Vladimir Kondratiev
2003-12-15 20:36 ` Jeff Garzik
-- strict thread matches above, loose matches on Subject: below --
2003-12-14 20:00 Vladimir Kondratiev
2003-12-14 20:46 ` Jeff Garzik
2003-12-15 10:01 ` Vladimir Kondratiev
2003-12-15 10:31 ` Gabriel Paubert
2003-12-15 12:44 ` Vladimir Kondratiev
2003-12-15 13:15 ` Arjan van de Ven
2003-12-15 13:58 ` Vladimir Kondratiev
2003-12-15 14:31 ` Arjan van de Ven
2003-12-15 14:44 ` Brian Gerst
2003-12-15 18:40 ` Greg KH
2003-12-15 19:23 ` Alan Cox
2003-12-15 20:00 ` Linus Torvalds
2003-12-16 10:20 ` Vladimir Kondratiev
2003-12-16 16:47 ` Linus Torvalds
2003-12-17 6:30 ` Vladimir Kondratiev
2003-12-17 6:46 ` Linus Torvalds
2003-12-17 6:55 ` Jeff Garzik
2003-12-17 7:24 ` Vladimir Kondratiev
2003-12-17 16:17 ` Linus Torvalds
2003-12-17 8:22 ` Arjan van de Ven
2003-12-17 10:35 ` Martin Mares
2003-12-17 23:06 ` Alan Cox
2003-12-17 10:08 ` Geert Uytterhoeven
2003-12-17 15:54 ` Linus Torvalds
2003-12-17 16:14 ` Geert Uytterhoeven
2003-12-17 17:44 ` Dan Hopper
2003-12-17 18:14 ` Vladimir Kondratiev
2003-12-17 21:44 ` Martin Mares
2003-12-16 17:10 ` Jeff Garzik
2003-12-16 17:48 ` Arjan van de Ven
2003-12-16 17:55 ` Jeff Garzik
2003-12-16 22:39 ` Vladimir Kondratiev
2003-12-17 0:12 ` Richard B. Johnson
2003-12-16 21:59 ` Vladimir Kondratiev
2003-12-16 17:45 ` Greg KH
2003-12-16 22:14 ` Vladimir Kondratiev
2003-12-17 10:05 ` Geert Uytterhoeven
2003-12-15 15:57 ` Vladimir Kondratiev
2003-12-15 10:42 ` Martin Mares
2003-12-15 10:07 ` Greg KH
2003-12-15 11:20 ` Vladimir Kondratiev
[not found] <3FDCA569.5070006@pobox.com>
2003-12-15 4:47 ` Pete Zaitcev
[not found] <12KJ6-4F2-13@gated-at.bofh.it>
[not found] ` <12Lvu-5X5-5@gated-at.bofh.it>
[not found] ` <12XQ2-7Vs-9@gated-at.bofh.it>
2003-12-15 10:17 ` Andi Kleen
[not found] ` <12YsA-nt-1@gated-at.bofh.it>
[not found] ` <130kQ-3A0-13@gated-at.bofh.it>
[not found] ` <130Xy-4Ia-3@gated-at.bofh.it>
[not found] ` <131Ac-5Qy-3@gated-at.bofh.it>
[not found] ` <137cD-8eg-9@gated-at.bofh.it>
[not found] ` <13kD2-1kF-11@gated-at.bofh.it>
2003-12-16 17:44 ` Andi Kleen
[not found] ` <13r1S-3FB-11@gated-at.bofh.it>
[not found] ` <13vyg-43O-7@gated-at.bofh.it>
2003-12-16 22:18 ` Andi Kleen
[not found] ` <13qIi-31G-1@gated-at.bofh.it>
[not found] ` <13DvZ-2RY-9@gated-at.bofh.it>
[not found] ` <13DFw-3a8-9@gated-at.bofh.it>
[not found] ` <13DPq-3s4-7@gated-at.bofh.it>
[not found] ` <13Fem-6iy-7@gated-at.bofh.it>
[not found] ` <13SY1-35z-19@gated-at.bofh.it>
2003-12-17 23:22 ` Andi Kleen
2003-12-17 23:38 ` Alan Cox
[not found] ` <12XQc-7Vs-29@gated-at.bofh.it>
[not found] ` <12Z5u-1tG-11@gated-at.bofh.it>
2003-12-15 14:58 ` Andi Kleen
2003-12-15 15:40 ` Vladimir Kondratiev
[not found] <Pine.LNX.4.44.0312150917170.32061-100000@coffee.psychology.mcmaster.ca>
2003-12-15 15:52 ` Vladimir Kondratiev
2003-12-15 16:08 ` Kevin P. Fleming
2003-12-15 16:38 ` Vladimir Kondratiev
2003-12-15 16:55 ` Richard B. Johnson
2003-12-15 17:08 ` Tomas Szepe
2003-12-15 18:03 ` Richard B. Johnson
2003-12-15 18:15 ` Tomas Szepe
2003-12-15 18:35 ` Richard B. Johnson
2003-12-15 18:43 ` Keith Owens
2003-12-15 18:45 ` Tomas Szepe
2003-12-15 17:24 ` Vladimir Kondratiev
2003-12-15 17:22 ` Randy.Dunlap
2003-12-15 18:16 ` Greg KH
2003-12-15 18:20 ` Richard B. Johnson
2003-12-15 17:09 ` Keith Owens
2003-12-15 17:38 ` Tomas Szepe
2003-12-15 18:16 ` Keith Owens
2003-12-15 18:23 ` Tomas Szepe
2003-12-15 20:08 Nakajima, Jun
[not found] <12InT-wQ-5@gated-at.bofh.it>
[not found] ` <135Nw-5gv-3@gated-at.bofh.it>
[not found] ` <137wc-q1-23@gated-at.bofh.it>
2003-12-15 21:56 ` Andi Kleen
2003-12-15 22:48 ` Vladimir Kondratiev
2003-12-15 23:06 ` Andi Kleen
2003-12-15 23:14 ` Greg KH
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