On Sat, Jul 07, 2007 at 05:39:54PM -0400, Jim Crilly wrote: > On 07/07/07 04:45:57PM -0400, Roberto C. Sánchez wrote: > > > > > The stock Debian kernels are configured like this: > > > > CONFIG_HIGHMEM4G=y > > # CONFIG_HIGHMEM64G is not set > > CONFIG_HIGHMEM=y > > > > So, if you have a machine with 4-64 GB RAM, then a custom kernel is in > > order. Of course, as far as the BIOS goes, if the machine supports more > > than 4 GB RAM, then the BIOS should as well. After all, why would > > someone manufacture a machine that can handle more than 4 GB RAM and > > then put in a BIOS that cannot? > > > > No, even with just 4G you need CONFIG_HIGHMEM64G because to access the > memory from ~3.5G-4G you need to remap it above the 4G mark since those > addresses were "stolen" by the various hardware components in your system > so you need a kernel able to address >4G. > Please read again my first sentence. You and I are in agreement on this, just saying it in different ways. Regards, -Roberto -- Roberto C. Sánchez http://people.connexer.com/~roberto http://www.connexer.com
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