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Date: Fri, 15 Jun 2007 10:30:19 -0700 From: "Jared Hulbert" <jaredeh@...il.com> To: "Heiko Carstens" <heiko.carstens@...ibm.com> Cc: carsteno@...ibm.com, "Nick Piggin" <nickpiggin@...oo.com.au>, "Andrew Morton" <akpm@...ux-foundation.org>, richard.griffiths@...driver.com, "Richard Griffiths" <res07ml0@...izon.net>, linux-kernel@...r.kernel.org, "Jörn Engel" <joern@...ybastard.org>, "Heiko Carstens" <h.carstens@...ibm.com> Subject: Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP > If you can write code that doesn't need any struct pages that would make > life a bit easier, since we wouldn't need any pseudo memory hotplug code > that just adds struct pages. That was my gut feel too. However, it seems from Carsten and Jörn discussion of read/write XIP on Flash (and some new Phase Change) memories that having the struct pages has a lot of potential benefits. Wouldn't it also allow most of the mm routines to remain unchanged. I just worry that it would be difficult to set apart these non volitatile pages that can't be written too directly. > We would still need to add the kernel mapping though. But that's handled by ioremap()ing it right? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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