This one is new to me:
PID hash table entries: 4096 (order: 12, 32768 bytes)
Initializing CPU#0
Checking aperture...
No AGP bridge found
Node 0: aperture @ 9c000000 size 64 MB
Node 1: aperture @ 9c000000 size 64 MB
Memory: 33083744k/35258368k available (3622k kernel code, 1706576k
absent, 468048k reserved, 1606k data, 456k init)
------------[ cut here ]------------
WARNING: at kernel/smp.c:369 smp_call_function_many+0x52/0x1b3()
Hardware name: MCP55
Pid: 0, comm: swapper Not tainted 2.6.30-01557-gb640f04 #1
Call Trace:
 [<ffffffff81086aec>] ? cache_grow+0x1e3/0x237
 [<ffffffff810576db>] ? smp_call_function_many+0x52/0x1b3
 [<ffffffff810374f6>] warn_slowpath_common+0x72/0x9f
 [<ffffffff81037532>] warn_slowpath_null+0xf/0x11
 [<ffffffff810576db>] smp_call_function_many+0x52/0x1b3
 [<ffffffff810851aa>] ? do_ccupdate_local+0x0/0x2f
 [<ffffffff810851aa>] ? do_ccupdate_local+0x0/0x2f
 [<ffffffff8105785c>] smp_call_function+0x20/0x24
 [<ffffffff8103b9df>] on_each_cpu+0x18/0x2d
 [<ffffffff8108707c>] do_tune_cpucache+0xf3/0x45a
 [<ffffffff81087585>] enable_cpucache+0x63/0xaf
 [<ffffffff8154126f>] kmem_cache_init+0x401/0x45d
 [<ffffffff81539f3a>] ? mem_init+0x156/0x161
 [<ffffffff8152da5b>] start_kernel+0x1a6/0x2b8
 [<ffffffff8152d270>] x86_64_start_reservations+0x80/0x84
 [<ffffffff8152d355>] x86_64_start_kernel+0xe1/0xe8
---[ end trace 4eaa2a86a8e2da22 ]---
start_kernel(): bug: interrupts were enabled *very* early, fixing it
NR_IRQS:4352 nr_irqs:880
Extended CMOS year: 2000
Fast TSC calibration using PIT
Detected 2200.110 MHz processor.
spurious 8259A interrupt: IRQ7.
Console: colour VGA+ 80x25
console [tty0] enabled
hpet clockevent registered
HPET: 3 timers in total, 0 timers will be used for per-cpu timer
Calibrating delay loop (skipped), value calculated using timer
frequency.. 4401.55 BogoMIPS (lpj=7333690)
Dentry cache hash table entries: 4194304 (order: 13, 33554432 bytes)
Inode-cache hash table entries: 2097152 (order: 12, 16777216 bytes)
Mount-cache hash table entries: 256

That's the bit that looked interesting at first glance. Full dmesg and
config attached.

Regards,
Tony V.