Bug#551259: linux-image-2.6.30-2-amd64: fails to detect NUMA on Dell T7500

[Joe Krahn <krahn@niehs.nih.gov>]

I see the same NUMA problem on updated Fedora 10 and 11 kernels, on Dell 
T5500 and T7500. I also see the tbutils warnings about ACPI checksum 
errors for TCPA and SLIC tables.

If Dell claims it is a Linux problem, it would help to know if they 
claim that the SRAT and/or SLIT tables are actually defined. Is it 
possible to use run-time notification via ACPI _PXM, and not have these 
static tables? Does Linux support _PXM NUMA notification?

I tried toggling BIOS settings, like hyper-threading and virtualization 
support, but these had no effect. It might help to boot with ACPI 
debugging enabled, but Fedora kernels have that feature disabled.

Joe Krahn