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@xxxxxxxxxxxx
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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