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Old 07-16-2006, 07:15 PM   #1
eglow
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Registered: Jul 2006
Location: Frederick, MD
Distribution: CentOS 4.3
Posts: 18

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PCI Express Hotplug Messages


Hello all,

I have a server running CentOS 4.3. It is running off a Supermicro PDSMi motherboard. Everything seems to be working okay, however I receive the following messages in the dmesg upon boot:

Evaluate _OSC Set fails. Status = 0x0005
pciehp: Both _OSC and OSHP methods do not exist

This repeats 5 times. My understanding is that pciehp is the Hotplug driver. By adding 'pciehp' to /etc/hotplug/blacklist, it will effectively remove these messages upon boot, but I still do not understand why they are appearing.

Has anyone ever seen these messages before? Any insight into the matter would be greatly appreciated. I will post an 'lspci' output below. If any more information is needed, let me know and I'll be glad to post it:

[root@neon ~]# lspci
00:00.0 Host bridge: Intel Corporation E7230 Memory Controller Hub (rev 81)
00:01.0 PCI bridge: Intel Corporation E7230 PCI Express Root Port (rev 81)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.4 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 5 (rev 01)
00:1c.5 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
02:00.0 PCI bridge: Intel Corporation 6702PXH PCI Express-to-PCI Bridge A (rev 09)
02:00.1 PIC: Intel Corporation 6700/6702PXH I/OxAPIC Interrupt Controller A (rev 09)
03:01.0 RAID bus controller: 3ware Inc 7xxx/8xxx-series PATA/SATA-RAID (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet Controller (Copper) (rev 03)
05:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
0a:00.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)

Best Regards,
Tom
 
Old 07-17-2006, 03:34 PM   #2
Electro
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Registered: Jan 2002
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Your board does not support hotplugging for PCI or PCIe. Only HP/Compaq computers have hotplug in certain models. The module pcihp is for certain HP/Compaq models that have PCI or PCIe hotplug support. The kernel uses a script for hotplug support to handle USB and IEEE-1394 (aka Firewire or iLink). If you remove a PCI or PCIe card from your system while it is powered on, you will fry the motherboard.
 
Old 07-17-2006, 11:25 PM   #3
eglow
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Registered: Jul 2006
Location: Frederick, MD
Distribution: CentOS 4.3
Posts: 18

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Thanks for the information. I went ahead and added pciehp to /etc/hotplug/blacklist and rebooted; error messages are now gone. I didn't think I had a PCI hotplug card, just wanted to make sure that is all this is. Looks like this one is a non-issue, thanks again for the help.
 
  


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