"Martin J. Bligh" <mbligh@aracnet.com> writes:
> Is there any good reason we can't remove TASK_UNMAPPED_BASE, and just shove
> libraries directly above the program text? Red Hat seems to have patches to
> dynamically tune it on a per-processes basis anyway ...
Yes. You won't get a continuous sbrk/brk heap then anymore. Not sure it is a
big problem though.
But apparently Solaris/x86 is doing that.
It's probably worth a sysctl at least.
> Moreover, can we put the stack back where it's meant to be, below the
> program text, in that wasted 128MB of virtual space? Who really wants
>> 128MB of stack anyway (and can't fix their app)?
You could, but I bet it would break some programs
(e.g. just moving __PAGE_OFFSET on amd64 to 4GB for 32bit broke some things)
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:22 EST