Re: 2.6.28-rc7 acpi error messages

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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
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