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Raionale for making user space text segment start at 0x8048000

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http://unix.stackexchange.com – I read somewhere that ( at least since Linux v. 2.6 ) all user-space code is placed at load address 0x8048000 in the virtual memory address space. My own observations confirm this. I have done a cat /proc/......../maps for several processes and the very first section of a process' program text always starts at '0x8048000'. Furthermore the C library startup code and all the other runtime goodies all seem to be mapped after this default value. This constitutes almost 128 M of address space, not a lot considering that 0xC0000000 - 0x8048000 is still almost 3G of address space for user spac (HowTos)