On Wed, Aug 08, 2007 at 02:31:00AM +0100, Alan Cox wrote:
> 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 ?
Indeed not.
> > > 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.
Blerch.
> > 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.
Well if somewhereelse doesn't exist today, programs written today will
break on tomorrow's kernels.
--
Mathematics is the supreme nostalgia of our time.
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