Re: ACPI exception with 2.6.29-rc6

Re: ACPI exception with 2.6.29-rc6

[Rafael J. Wysocki]

On Monday 23 February 2009, Heinz Diehl wrote:
> Hi,
> 
> booting 2.6.29-rc6 shows the following in boot.log:
> 
> [....]
> <7>bus: 00 index 4 mmio: [230000000, fcffffffff]
> <6>ACPI: bus type pci registered
> <5>PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 127
> <5>PCI: MCFG area at f0000000 reserved in E820
> <6>PCI: Using MMCONFIG at f0000000 - f7ffffff
> <6>PCI: Using configuration type 1 for base access
> <4>bio: create slab <bio-0> at 0
> <7>ACPI: EC: Look up EC in DSDT
> --> <3>ACPI: Denied BIOS AML access to invalid port 0x4d0+0x2 (ELCR)
> --> <4>ACPI Exception (dsopcode-0419): AE_AML_ILLEGAL_ADDRESS, During address validation of OpRegion [ELCR] [20081204]
> <6>ACPI: Interpreter enabled
> <6>ACPI: (supports S0 S1 S5)
> <6>ACPI: Using IOAPIC for interrupt routing
> <6>ACPI: No dock devices found.
> <6>ACPI: PCI Root Bridge [PCI0] (0000:00)
> <7>pci 0000:00:01.1: reg 10 io port: [0xe800-0xe83f]
> [....]

Well, this looks like a result of some recent ACPICA changes.  ACPI people
CCed.

Thanks,
Rafael

Re: ACPI exception with 2.6.29-rc6

[Andrew Morton]

(cc linux-acpi)

On Mon, 23 Feb 2009 17:46:51 +0100
Heinz Diehl <htd@fancy-poultry.org> wrote:

> Hi,
> 
> booting 2.6.29-rc6 shows the following in boot.log:
> 
> [....]
> <7>bus: 00 index 4 mmio: [230000000, fcffffffff]
> <6>ACPI: bus type pci registered
> <5>PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 127
> <5>PCI: MCFG area at f0000000 reserved in E820
> <6>PCI: Using MMCONFIG at f0000000 - f7ffffff
> <6>PCI: Using configuration type 1 for base access
> <4>bio: create slab <bio-0> at 0
> <7>ACPI: EC: Look up EC in DSDT
> --> <3>ACPI: Denied BIOS AML access to invalid port 0x4d0+0x2 (ELCR)
> --> <4>ACPI Exception (dsopcode-0419): AE_AML_ILLEGAL_ADDRESS, During address validation of OpRegion [ELCR] [20081204]
> <6>ACPI: Interpreter enabled
> <6>ACPI: (supports S0 S1 S5)
> <6>ACPI: Using IOAPIC for interrupt routing
> <6>ACPI: No dock devices found.
> <6>ACPI: PCI Root Bridge [PCI0] (0000:00)
> <7>pci 0000:00:01.1: reg 10 io port: [0xe800-0xe83f]
> [....]
> 
> ...while 2.6.28.7 boots without showing any ACPI exception:
> 
> [....]
> <7>bus: 00 index 3 mmio: [d0000000, efffffff]
> <7>bus: 00 index 4 mmio: [230000000, fcffffffff]
> <6>ACPI: bus type pci registered
> <5>PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 127
> <5>PCI: MCFG area at f0000000 reserved in E820
> <6>PCI: Using MMCONFIG at f0000000 - f7ffffff
> <6>PCI: Using configuration type 1 for base access
> <7>ACPI: EC: Look up EC in DSDT
> <6>ACPI: Interpreter enabled
> <6>ACPI: (supports S0 S1 S5)
> <6>ACPI: Using IOAPIC for interrupt routing
> <6>ACPI: No dock devices found.
> <6>ACPI: PCI Root Bridge [PCI0] (0000:00)
> <7>pci 0000:00:01.1: reg 10 io port: [0xe800-0xe83f]
> [....]

Are there any observeable effects from this apart from the scary
message?

Thanks.

Re: ACPI exception with 2.6.29-rc6

[Len Brown]

> > --> <3>ACPI: Denied BIOS AML access to invalid port 0x4d0+0x2 (ELCR)
> > --> <4>ACPI Exception (dsopcode-0419): AE_AML_ILLEGAL_ADDRESS, During address validation of OpRegion [ELCR] [20081204]

Heinz,
Thanks for the note.
Please attach the output of acpidump here:

http://bugzilla.kernel.org/show_bug.cgi?id=12758

Also, if this system has both pic and IOAPIC mode,
it would be interesting to try booting it in both,
eg with "noapic".

thanks,
-Len

Re: ACPI exception with 2.6.29-rc6

[Heinz Diehl]

On 24.02.2009, Len Brown wrote: 

> Please attach the output of acpidump here:
> http://bugzilla.kernel.org/show_bug.cgi?id=12758

Did just upload the attachment.

> Also, if this system has both pic and IOAPIC mode,
> it would be interesting to try booting it in both,
> eg with "noapic".

Booting with the "noapic" option, the logfile shows:

[....]
<7>bus: 00 index 3 mmio: [d0000000, efffffff]
<7>bus: 00 index 4 mmio: [230000000, fcffffffff]
<6>ACPI: bus type pci registered
<5>PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 127
<5>PCI: MCFG area at f0000000 reserved in E820
<6>PCI: Using MMCONFIG at f0000000 - f7ffffff
<6>PCI: Using configuration type 1 for base access
<4>bio: create slab <bio-0> at 0
<7>ACPI: EC: Look up EC in DSDT
<3>ACPI: Denied BIOS AML access to invalid port 0x4d0+0x2 (ELCR)
<4>ACPI Exception (dsopcode-0419): AE_AML_ILLEGAL_ADDRESS, During address validation of OpRegion [ELCR] [20081204]
<6>ACPI: Interpreter enabled
<6>ACPI: (supports S0 S1 S5)
<6>ACPI: Using PIC for interrupt routing
<6>ACPI: No dock devices found.
<6>ACPI: PCI Root Bridge [PCI0] (0000:00)
<7>pci 0000:00:01.1: reg 10 io port: [0xe800-0xe83f]
[....]

Greetings, 
Heinz.

Re: ACPI exception with 2.6.29-rc6

[Heinz Diehl]

On 24.02.2009, Andrew Morton wrote: 

> Are there any observeable effects from this apart from the scary
> message?

The machine is up for 1.5 hours now, did not see any problems so far.

Greetings,
Heinz.