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Date: Thu, 6 Dec 2007 22:17:39 -0600 From: Rob Landley <rob@...dley.net> To: "Jared Hulbert" <jaredeh@...il.com> Cc: carsteno@...ibm.com, "Nick Piggin" <npiggin@...e.de>, "Christian Borntraeger" <borntraeger@...ibm.com>, "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>, linux-fsdevel@...r.kernel.org, "Eric W. Biederman" <ebiederm@...ssion.com>, "Andrew Morton" <akpm@...ux-foundation.org>, "Jens Axboe" <axboe@...nel.dk> Subject: Re: [patch] ext2: xip check fix On Thursday 06 December 2007 21:22:25 Jared Hulbert wrote: > > > I have'nt looked at it yet. I do appreciate it, I think it might > > > broaden the user-base of this feature which is up to now s390 only due > > > to the fact that the flash memory extensions have not been implemented > > > (yet?). And it enables testing xip on other platforms. The patch is on > > > my must-read list. > > > > query: which feature is currently s390 only? (Execute In Place?) > > I think so. The filemap_xip.c functionality doesn't work for Flash > memory yet. Flash memory doesn't have struct pages to back it up with > which this stuff depends on. Um, trying to clarify: S390. Also known as zSeries, big iron machine, uses its own weird processor design rather than x86, x86-64, arm, or mips processors. How does "struct page" enter into this? What I want to know is, are you saying execute in place doesn't work on things like arm and mips? (I so, I was unaware of this. I heard about somebody getting it to work on a Nintendo DS: http://forums.maxconsole.net/showthread.php?t=18668 ) Rob -- "One of my most productive days was throwing away 1000 lines of code." - Ken Thompson. -- 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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