Hi,

I observed ACPI errors when booting 2.6.35.7 kernel with "nosmp" argument.
dmesg shows a warning message starting with :
WARNING: at mm/page_alloc.c:1981 __alloc_pages_nodemask+0x5b4/0x6d0()
+Hardware name: MS-7519
+Modules linked in:
+Pid: 1, comm: swapper Not tainted 2.6.35.7 #2

This is followed by ACPI error messages and /proc/interrupts show that
interrupts 0-15 are then handled by XT-PIC-XT
instead of IO-APIC-edge and IO-APIC-fasteoi when runing smp kernel.

Here is lspci dump :

00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller 
(rev 03)
00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root 
Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #4
00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #5
00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #6
00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 
EHCI Controller #2
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio 
Controller
00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express 
Root Port 1
00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express 
Port 2
00:1c.5 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express 
Root Port 6
00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #1
00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #2
00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB 
UHCI Controller #3
00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 
EHCI Controller #1
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90)
00:1f.0 ISA bridge: Intel Corporation 82801JIB (ICH10) LPC Interface 
Controller
00:1f.2 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port 
SATA IDE Controller #1
00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller
00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port 
SATA IDE Controller #2
01:00.0 VGA compatible controller: nVidia Corporation G98 [GeForce 8400 
GS] (rev a1)
02:00.0 IDE interface: JMicron Technology Corp. JMB368 IDE controller
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)

I observed the same issue with another machine with also an MSI 
motherboard but using a PCI bridge VIA VT8237/VX700
even when booting with "pci=use_crs" argument.

Attached is diff -ruN file between 2.6.35.7 kernel without and with 
"nosmp" boot argument.

Bernard