emsFS.IFS uses memory above 4 GB to create a ramdisk, accessing this memory through PSE36 instead of PAE. It maps a 4 MB pages above 4 GB limit to a 4 MB window below the 4 GB limit, without switching PAE on/off and copying data. PSE36 is enabled permanently, and no copying is done, only mapping.
Being based on ramfs.ifs it has all its benefits, like absence of block layer and caching overhead.
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