mmap to fixed adr

[Mulyadi Santosa]

On Sun, Jun 19, 2011 at 19:02, Volker Poplawski <volker at openbios.org> wrote:
> Hi,
>
> is there a VA range in userspace which is always safe for mmap() with
> fixed adr? (x86_64 mostly)
>
> I.e. a VA range where mmap() or ld will never map memory.

likely, you can find it out by yourself using:
cat /proc/self/maps | head

there you can find where kernel maps the very first object. Then, IMO,
all you need to do is preceed that address. Beware, IMHO, don't start
with address 0 as you might screw NULL handler.

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
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