In article <y4sqnvbsrz1dc...@pony.stderr.spb.ru>, Valery Ushakov <u...@stderr.spb.ru> wrote: >Do we have a way to tell malloc on a 32-bit system to allocate memory >only below the 2GB boundary (on i386, including when run under amd64)? >I'm trying to port a(n old) program that wants to use the sign bit for >its internal purposes. I guess one option would be to prevent malloc >from using mmap (and disable alsr?) so that only sbrk (in the low 2GB) >is used. > >Suggestions are appreciated.
Perhaps this is also affected by uvm TOPDOWN. I think that this might need kernel support... christos
