Messages in this thread | | | Date | Fri, 22 Aug 2008 09:46:45 +1000 | From | Greg Ungerer <> | Subject | Re: [PATCH 00/10] AXFS: Advanced XIP filesystem |
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Jamie Lokier wrote: > Jared Hulbert wrote: >> The biggest improvement is in the way AXFS allows for each page to be XIP or >> not. First, a user collects information about which pages are accessed on a >> compressed image for each mmap()ed region from /proc/axfs/volume0. That >> 'profile' is used as an input to the image builder. The resulting image has >> only the relevant pages uncompressed and XIP. The result is smaller memory >> sizes and faster launches. > > Sounds great, really nice idea. > > How does it fare with no MMU? Can the profiler and image builder lay > out the XIP pages in such a way that no-MMU mmaps can map those regions?
The key for XIP on noMMU would be the ability to store a file as one complete contiguous chunk. Can AXFS do this?
Regards Greg
------------------------------------------------------------------------ Greg Ungerer -- Chief Software Dude EMAIL: gerg@snapgear.com Secure Computing Corporation PHONE: +61 7 3435 2888 825 Stanley St, FAX: +61 7 3891 3630 Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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