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Date: Wed, 8 Aug 2007 02:31:00 +0100 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Matt Mackall <mpm@...enic.com> Cc: Dave Hansen <haveblue@...ibm.com>, linux-kernel@...r.kernel.org, serue@...ibm.com Subject: Re: [RFC][PATCH 1/5] pagemap: remove file header O> > The endianness is only useful when examining a raw dump of > > pagemap from a different machine when you don't know the > > source of the file. This is pretty rare, and the programs > > or scripts doing the copying off-machine can certainly be > > made to hold this information. Nobody fancies doing bi-endian MIPS ? > > The page size is available in userspace at least with libc's > > getpagesize(). This will also never vary across processes, For now. Its a logical direction however thant we end up with bigger page sizes either by hardware or by software merging and end up having different page sizes for legacy 32bit binaries. > I'd really strongly prefer to have no header. It was added to > futureproof the thing. The information needed to parse /proc/pid/pagemap can be stuck in /proc/pid/somewherelese. If we ever get page size variations and the like then /proc/pid/ is going to end up with that information anyway for ps and friends to use. - 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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