Re: High Mem Options

Alan Cox (
05 Mar 2003 13:38:46 +0000

On Wed, 2003-03-05 at 11:28, Reed, Timothy A wrote:
> Hello all,
> Yet another quick there any down side to using the
> 64GB option over the 4GB option if the machine only has 2GB of RAM onboard??
> I would think this would be a performance issue? Does the kernel only use
> the translation table if it has to access any memory location over 4GB?

The 64Gb mode has to use different page table formats, so there is a hit

Alan Cox <>
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at