linux-kernel - Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

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Message-ID: <20080822181314.GB24179@shareable.org>
Date:	Fri, 22 Aug 2008 19:13:14 +0100
From:	Jamie Lokier <jamie@...reable.org>
To:	Greg Ungerer <gerg@...pgear.com>
Cc:	Jared Hulbert <jaredeh@...il.com>, Linux-kernel@...r.kernel.org,
	linux-embedded@...r.kernel.org,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	Jörn Engel <joern@...fs.org>,
	tim.bird@...sony.com, cotte@...ibm.com, nickpiggin@...oo.com.au
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

Greg Ungerer wrote:
> One thing for sure is that many people who do non-MMU setups
> are interested in XIP to get the space savings. These are very
> often small devices with very constrained RAM and flash. (For
> whatever it is worth single NOR flash only boards are common in
> these smaller form factors :-)

I'm using XIP on a device with 32MB RAM.  The reason I use it is
_partly_ to save RAM, partly because programs start about 10 times
faster (reading NOR flash is slow and I keep the XIP region in RAM)
and partly because it reduces memory fragmentation.

-- Jamie
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