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

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Date:	Fri, 22 Aug 2008 11:16:20 -0700
From:	"Jared Hulbert" <jaredeh@...il.com>
To:	"Jamie Lokier" <jamie@...reable.org>
Cc:	"Greg Ungerer" <gerg@...pgear.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

On Fri, Aug 22, 2008 at 11:13 AM, Jamie Lokier <jamie@...reable.org> wrote:
> 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)

What kind of NOR you using?  That is not what I measure with fast
synchronous burst NOR's.
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