RE: 2.6.28-rc7 acpi error messages

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The 2.6.27 have less issues, though the FADT issues seems to be identical.
I'll attach the dmesg from 27 here.

[    0.000000] ACPI Error (tbfadt-0453): 32/64X address mismatch in "Gpe0Block": [0000F820] [000000000001F028], using 64X [20080609]

Is same what I saw in 28, but the only error, I see more in 28.

[    2.662287] usplash[1202]: segfault at c1a7c ip 00001a7c sp 00000ffa error 15 in zero (deleted)[1000+9f000]

Didn't see this one in 28. :-)

-----Original Message-----
From: Matthew Garrett [mailto:mjg59@xxxxxxxxxxxxx]
Sent: Wednesday, December 03, 2008 3:36 PM
To: Moore, Robert
Cc: Koornstra, Reinoud; linux-acpi@xxxxxxxxxxxxxxx; Brown, Len; Lin, Ming M
Subject: Re: 2.6.28-rc7 acpi error messages

On Wed, Dec 03, 2008 at 03:12:55PM -0800, Moore, Robert wrote:
> Not even the 32-bit values seem fully correct, however. For example:
>
> [05Ch 092  1]            GPE0 Block Length : 10
>
>
> [0DCh 220 12]                   GPE0 Block : <Generic Address Structure>
> [0DCh 220  1]                     Space ID : 01 (SystemIO)
> [0DDh 221  1]                    Bit Width : 20
> [0DEh 222  1]                   Bit Offset : 00
> [0DFh 223  1]                 Access Width : 00
> [0E0h 224  8]                      Address : 000000000001F028
>
>
> For the first block length, I seriously doubt that the machine has (0x10 * 8) = 128 GPEs. The bit width of 0x20 (32 GPEs) sounds more reasonable.

Hmm, indeed - Intel hardware only decodes 32-bits for the GPE block. Do
we have the version 1 FADT from the machine as well? If that's correct
it suggests that Windows gets all of this information from there rather
than using the version 2 table at all, while if it isn't perhaps we need
to take the width from the 64-bit values. Sigh. What a mess.

--
Matthew Garrett | mjg59@xxxxxxxxxxxxx

Attachment: 27-DMESG_OUTPUT
Description: 27-DMESG_OUTPUT


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