Hi Roland!

Richard et moi, we wondered what ELF_MACHINE_USER_ADDRESS_MASK »Mask
identifying addresses reserved for the user program, where the dynamic
linker should not map anything.«, the reason for it usage in
sysdeps/mach/hurd/dl-sysdep.c:__mmap for vm_map's mask argument (but not
in sysdeps/mach/hurd/mmap.c:__mmap which addmittedly is not »the dynamic
linker«, so...), and then especially sysdeps/mach/hurd/dl-sysdep.c:fmh
»XXX loser kludge for vm_map kernel bug« are all about.  You added that
in commit 5bf62f2d3a8af353fac661b224fc1604d4de51ea (well, waaaay before
someone would speak about Git commits), and later touched it in commit


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