Re: kernel (64bit) 4GB memory support

[Rudolf Usselmann]

On Thu, 2005-05-12 at 05:56 +0200, Stefan Smietanowski wrote:
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> 
> Lennart Sorensen wrote:
> > On Wed, May 11, 2005 at 02:48:42AM +0700, Rudolf Usselmann wrote:
> > 
> >>I do see the full 4G. With Fedora Core 2 32bit, I can use all
> >>4G as well. All my problems started when I "upgraded" to x86_64 ...
> > 
> > 
> > In 32bit it probably uses the PSE36 extensions or something, which isn't
> > the same thing as flat 64bit memory access.  It could just be a matter
> > of needing a memory hole somewhere for PCI space or something.  I only
> > have 1G in my 64bit machine so I haven't got near these problems.
> 
> I don't recall him saying he's changed kernel from the default redhat
> kernel in which case he's running the RedHat 4G/4G split kernel and not
> using PSE/PAE.
> 
> // Stefan


I'm using whatever is available on www.kernerl.org :*)

Sorry I am totally lost what the above terminology means.

Is that a configuration option that I should try, or a totally
different branch of the kernel ?

Thanks !
rudi
=============================================================
Rudolf Usselmann,  ASICS World Services,  http://www.asics.ws
Your Partner for IP Cores, Design, Verification and Synthesis

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