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acpi_pciehprm error with RHEL 4 on DL385

Loic Domaigne
Occasional Advisor

acpi_pciehprm error with RHEL 4 on DL385

I have installed Red Hat Enterprise Linux 4 (Advanced Server) update 2 on our DL385 box.

The command dmesg reports a bunch of errors (see dmesg.txt file in attachment) similar to:
Evaluate _OSC Set fails. Status = 0x0005
Evaluate _OSC Set fails. Status = 0x0005
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(1) at s:b:d:f=0x00:05:07:00
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 OSHP fails=0x5
...
pciehp: acpi_pciehprm: Slot sun(2) at s:b:d:f=0x00:05:08:00
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI3 OSHP fails=0x5
...
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI4 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI4 OSHP fails=0x5
pciehp: acpi_pciehprm: Slot sun(3) at s:b:d:f=0x00:06:09:00
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI4 _HPP fail=0x5
pciehp: acpi_pciehprm:\_SB_.CFG1.PCI4 OSHP fails=0x5
...
pciehp: Both _OSC and OSHP methods do not exist

Should I care about these failures?

I found a way to get rid of these messages by turning acpi off with the kernel paramater acpi=off. However, I get then the following messages with dmesg:
pciehp: acpi_pciehprm:get_device PCI ROOT HID fail=0x1001
(repeated 5 times)

Is it a consequence of acpi=off?


Any hints/advises will be appreciated.

TIA,
Loic.
2 REPLIES
Arnd Kohlen
Advisor

Re: acpi_pciehprm error with RHEL 4 on DL385

pciehp is "pci express hot plug", which you can activate or deactivate in your kernel configuration under "Bus options (PCI, PCMCIA, EISA, MCA, ISA -> PCI Express Support".

It looks like during the start it searches for any possible acpi events for the pci-e bus but I'm not sure.

Maybe it gives you an idea where to search else. While you were activating acpi it didn't look anymore for any supported operations on the bus...
Loic Domaigne
Occasional Advisor

Re: acpi_pciehprm error with RHEL 4 on DL385

time to close and give points.