Good evening,

Current linus-2.6 no longer boots on my workstation, config attached.

Early exception transcribed (1.4MB JPEG available as well, probably too
big to attach here though):
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x10de8201 base: 0xfed00000
SMP: allowing 12 CPUs, 0 hotplug CPUs
Allocating PCI resources starting at b00000000 (gap:b00000000:3000000
NR_CPUS: 12 nr_cpumask_bits:12 nr_cpu_ids:12 nr_node_ids:2
PERCPU: Embedded 23 pages/cpu @ffff880028200000 s73688 r0 d20520 u262
PANIC: early exception 06 rip 10:ffffffff815a50e6 error 0 cr2 d0fff6
Pid: 0, comm: swapper Not tained 2.6.31-07068-g43c266 #1
Call Trace:
[<ffffffff81591175>] early_idt_handler+0x55/0x68
[<ffffffff815a50e6>] ? pcpu_setup_first_chunk+0x40b/0x692
[<ffffffff815a50ff>] ? pcpu_setup_first_chunk+0x424/0x692
[<ffffffff815a5867>] pcpu_embed_first_chunk+0x1e2/0x241
[<ffffffff81598c14>] ? pcpu_fc_alloc+0x0/0xac
[<ffffffff81598bf5>] ? pcpu_fc_free+0x0/0x1f
[<ffffffff81598a36>] setup_per_cpu_areas+0x65/0x219
[<ffffffff815919bf>] start_kernel+0x124/0x2c5
[<ffffffff81591252>] x86_64_start_reservations+0x82/0x86
[<ffffffff8159133a>] x86_64_start_kernel+0xe4/0xeb
RIP pcpu_setup_first_chunk+0x40b/0x692

This is a Tyan S2932-SI mainboard on BIOS:
	Vendor: American Megatrends Inc.
	Version: 'V2.05     '
	Release Date: 06/04/2009

This a dual hex-core system.

Last known working kernel is:
Linux prometheus 2.6.31-03123-g99bc470 #1 SMP Mon Sep 14 22:53:06 BST
2009 x86_64 Six-Core AMD Opteron(tm) Processor 2435 AuthenticAMD
GNU/Linux
(dmesg for normal operation in g99bc470 kernel attached)

Happy to provide any further information that you may require.

Regards,
Tony V.