s2875 tyan kernel memory problem

[garrone <pgarrone@acay.com.au>]

Memory/disk Problems with s2875 Tyan dual-processor motherboard

I have 4 gig of ram. If, in the bios, I enable the memory hole so as
to get all 4 gig of ram in the kernel, and run a stress test as follows:

stress -d 1 -t 10

Then I get a kernel crash almost immediately and have to de-power
to reboot. If I disable the memory hole, I only get 3.2 gigs, but I can run
the test without crashing.

I am running sarge packaged kernel, uname -a gives:
Linux athena 2.6.8-12-amd64-k8-smp #1 SMP Mon Jul 17 00:17:20 UTC 2006 x86_64 GNU/Linux
It is from the sarge package:
kernel-image-2.6.8-12-amd64-k8-smp - Linux kernel image for version 2.6.8 on AMD64 SMP systems

This crash also occurs when I do large file copies. A ubuntu 2.6.11 kernel
with amd64 and 32 bit applications does not seem to have the problem
while copying files.