Re: increasing the TASK_SIZE

[Gareth Hughes]

"Ernest N. Mamikonyan" wrote:
> 
> I was wondering how I can increase the process address space, TASK_SIZE
> (PAGE_OFFSET), in the current kernel. It looks like the 3 GB value is
> hardcoded in a couple of places and is thus not trivial to alter. Is
> there any good reason to limit this value at all, why not just have it
> be the same as the max addressable space (64 GB)? We have an ix86 SMP
> box with 4 GB of RAM and want to be able to allocate all of it to a
> single program (physics simulation). I would greatly appreciate any help
> on this.

Sounds like you just need to enable highmem.  Check the help for "High
Memory Support" in "Processor type and features".

-- Gareth