ACPI warning messages in CentOS 6.7

[craigliu]

I have a new SuperMicro 6018U-TRT+ machine installed with CentOS 6.7 64bit. By using dmesg I can see the following warning messages:
1)
ACPI Warning: FADT (revision 5) is longer than ACPI 2.0 version, truncating length 268 to 244 (20090903/tbfadt-288)
2)
ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000428-0x000000000000042f (\GPE0) (20090903/utaddress-254)
3)
ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000053f conflicts with OpRegion 0x000000000000052c-0x000000000000052d (\GPIV) (20090903/utaddress-254)

What do these warning messages mean? Do these msg indicate severe problems? What to do to eliminate these warning messages?

Thanks very much in advance. Any hints or suggestion are welcome.

[AlanBartlett]

The only advice I can give is to ensure that the system's BIOS is fully up-to-date.

Those messages are not severe warnings as such . . . consider them to be informational messages, as to how the ACPI process is attempting to work around deficiencies within the BIOS.

[craigliu]

The only advice I can give is to ensure that the system's BIOS is fully up-to-date.

Those messages are not severe warnings as such . . . consider them to be informational messages, as to how the ACPI process is attempting to work around deficiencies within the BIOS.

Thanks for reply. Our BIOS is up-to-date (Version 1.1, released on July 22, 2015). The following is one complete log msg:

alloc irq_desc for 152 on node 1
alloc kstat_irqs on node 1
alloc irq_2_iommu on node 1
ioatdma 0000:80:04.7: irq 152 for MSI/MSI-X
ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000428-0x000000000000042f (\GPE0) (20090903/utaddress-254)
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000053f conflicts with OpRegion 0x000000000000052c-0x000000000000052d (\GPIV) (20090903/utaddress-254)
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
lpc_ich: Resource conflict(s) found affecting gpio_ich

I have tried "acpi=off" and "processor.nocst=1", no luck.
Would like to have more suggestions or hints.

[aks]

I think they're I/O (memory) region conflicts. See https://bugzilla.redhat.com/show_bug.cgi?id=849773

[TrevorH]

How about : ignore the messages, they are unimportant.

[aks]

What he ^^^^^ said....