From: David Woodhouse <dwmw2@infradead.org>
To: Josh Boyer <jwboyer@gmail.com>
Cc: Nicolas Pitre <nico@cam.org>, Jared Hulbert <jaredeh@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC] Advanced XIP File System
Date: Wed, 03 May 2006 13:11:15 +0100 [thread overview]
Message-ID: <1146658275.20773.8.camel@pmac.infradead.org> (raw)
In-Reply-To: <625fc13d0605030341h2a105f49r2b1b610547e30022@mail.gmail.com>
On Wed, 2006-05-03 at 05:41 -0500, Josh Boyer wrote:
> Yes, I realize that all that is needed is support from other archs. A
> more general form of the question would be does AXFS depend on
> ARCH_MTD_XIP?
That's for kernel XIP, which needs special magic for putting certain
functions into RAM instead of the flash, polling for interrupts, etc.
For general _userspace_ XIP we don't necessarily need to do that. We
only need to mark those pages as absent in the page tables if we ever
schedule to userspace while the flash is in a mode other than read mode.
Then handle the page fault by switching the flash back or waiting for
it.
--
dwmw2
next prev parent reply other threads:[~2006-05-03 12:11 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-02 21:53 Jared Hulbert
2006-05-03 0:00 ` Arnd Bergmann
2006-05-03 1:59 ` Jared Hulbert
2006-05-03 2:27 ` Josh Boyer
2006-05-03 5:04 ` Jared Hulbert
2006-05-03 8:31 ` David Woodhouse
2006-05-03 19:14 ` Pavel Machek
2006-05-04 16:32 ` Jared Hulbert
2006-05-03 0:56 ` Josh Boyer
2006-05-03 3:17 ` Nicolas Pitre
2006-05-03 10:41 ` Josh Boyer
2006-05-03 12:11 ` David Woodhouse [this message]
2006-05-03 15:45 ` Jared Hulbert
2006-05-03 15:52 ` David Woodhouse
2006-05-03 15:57 ` Nicolas Pitre
2006-05-03 16:01 ` David Woodhouse
2006-05-03 16:10 ` Nicolas Pitre
2006-05-03 5:11 ` Jared Hulbert
2006-05-03 12:50 ` Mark Lord
2006-05-03 15:33 ` Jared Hulbert
2006-05-03 13:05 ` Jörn Engel
2006-05-03 15:31 ` Jared Hulbert
2006-05-03 15:47 ` Jörn Engel
2006-05-03 15:58 ` Jared Hulbert
2006-05-03 17:03 ` Jörn Engel
2006-05-03 18:58 ` Jared Hulbert
2006-05-03 16:38 ` Jan Engelhardt
2006-05-03 18:54 ` Jared Hulbert
2006-05-03 23:17 ` Josh Boyer
2006-05-03 23:48 ` Jared Hulbert
2006-05-04 0:21 ` Josh Boyer
2006-05-03 22:49 ` David Woodhouse
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