On 28 April 2016 at 14:17, Arnd Bergmann <a...@arndb.de> wrote:
> One simple (from the kernel's perspective, not from the JIT) approach
> might be to always use MAP_FIXED whenever an allocation is made for
> memory that needs these special pointers, and then manage the available
> address space explicitly. Would that work, or do you require everything
> including the binary itself to be below the address?

The trouble IME with this idea is that in practice you're
linking with glibc, which means glibc is managing (and using)
the address space, not the JIT. So MAP_FIXED is pretty awkward
to use.

thanks
-- PMM
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