Re: Problem with 1G RAM

Rik van Riel (
Thu, 3 Dec 1998 13:19:03 +0100 (CET)

On Wed, 2 Dec 1998, Lei Zhang wrote:

> but i couldn't get any kernel to work with the 1G RAM (i used
> append="mem=1024M" )
> How do i get the 1G RAM working?

With the standard Linux kernel, you can only use 1G-64M
since the system uses a bit of 'extra' address space for

You can run the kernel with mem=960M without any trouble.
If you feel like it you can hack the kernel to change the
3:1 split to something else (ie. a 2:2 split).

To do that you need to change __PAGE_OFFSET in
include/asm-i386/page.h and arch/i386/

All you need to know to succesfully do this operation
is in a big fat comment in page.h.


Rik -- the flu hits, the flu hits, the flu hits -- MORE
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