pulsar@xxxxxxxxx wrote: > Hi, > > In my kernel startup I see the memory usage printed as: > > Memory: 125312k/131072k available (1977k kernel code, 5648k reserved, 287k > data, 1664k init, 0k highmem) > > I wonder where the reserved pages are used for and how we can minimize it > for small memory systems. Most of that is the ramdisk you included. :-) It normally given back once the ramdisk is decompressed. > In my search I see that in arcm/mips/mm/init.c there are zero-pages > allocated and put to reserved. > > Where are the zero pages used for and can we do without ? They provide a clean zeroed page which gets mapped read-only (probably for copy-on-write). You can't do without. Thiemo
