Hi Jared,
Jared Hulbert wrote:
That would be enough I think. If you could manually select
which files are contiguous-and-uncompressed that would be
useful for some too here.
So.... If you don't have an MMU when do you call ->fault? Does the
noMMU code just loop through ->fault()ing all the pages in an mmap()?
Sort of. It actually just uses a single ->read to bring in
the entire file contents. There is a few limitations on the use
of mmap() for non-mmu. Documentation/nommu-mmap.txt gives
more details. With no MMU it does rely on being able to kmalloc()
a single RAM region big enough to hold the entire file.
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 :-)
True.
Regards
Greg
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