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SubjectRe: increasing the TASK_SIZE
On Thu, 5 Jul 2001, 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.

The only way to achieve your goal would be to modify the
hardware. What you want is not possible due to hardware
limitations of the x86 platform.

Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

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