Re: How to use >3G memory per process

["H. Peter Anvin" <hpa@zytor.com>]

Followup to:  <OHEPLPGMMIEGHANJIEBAIEPKCEAA.wydeng@platodesign.com>
By author:    "Wenyong Deng" <wydeng@platodesign.com>
In newsgroup: linux.dev.kernel
>
> Hi,
> 
> I read about 3.5G-per_process (or 3.5G/0.5G user/kernel space) in this
> mailing list, but I don't find the details of how to do it. I have installed
> Redhat7.2 (kernel 2.4.10enterprise) on a dual CPU 4G memory PC. I wrote a
> simple program to use malloc to allocate memory, and it can never exceeds
> 3G. libhoard didn't help either. My question is:
> 
> [1] What need to be done for the kernel to support 3.5G or more user address
> space per process?
> 
> [2] What need to be done at compilation time? Any option for
> compiler/linker?
> 

You need a patch from Andrea; you also need to either run kernel boot
protocol 2.03 (a patch from me, plus a compatible bootloader), *OR*
run without initrd.

	-hpa
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