Re: 2.4.4 kernel reports wrong amount of physical memory
H. Peter Anvin (hpa@zytor.com)
14 May 2001 17:25:18 -0700
Followup to: <Pine.LNX.4.33.0105142025000.18102-100000@duckman.distro.conectiva>
By author: Rik van Riel <riel@conectiva.com.br>
In newsgroup: linux.dev.kernel
>
> On Mon, 14 May 2001, Wayne Whitney wrote:
> > In mailing-lists.linux-kernel, you wrote:
> >
> > > You need to compile highmem support into the kernel if you want to
> > > use more than 890 MB of RAM, set it to maximum 4GB for best
> > > performance...
> >
> > On a similar note, what is the maximum physical memory supported
> > by the 4GB option?
>
> Ummm, 4GB maybe? ;)
>
It seems obvious once you know why the limits are there. The 1 GB
limit (actually 1024-128 MB = 896 MB) is a software limit; the 4 GB
and 64 GB limits are hardware limits and are exact.
IMO we should rename the 1 GB option!
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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