http://bugzilla.kernel.org/show_bug.cgi?id=10749
------- Comment #17 from [EMAIL PROTECTED] 2008-06-02 02:37 -------
Hi, Riccardo
Thanks for the info.
It seems that there are a lot of ACPI error messages in the dmesg of
2.6.26-rc1 and the problem occurs in the ISMI function.
> ACPI Error (exregion-0164): Could not map memory at 000000003FFFFF00, size
200 [20080321]
> ACPI Exception (evregion-0420): AE_NO_MEMORY, Returned by Handler for
[SystemMemory] [20080321]
> ACPI Error (psparse-0530): Method parse/execution failed [\ISMI] (Node
f7c18630), AE_NO_MEMORY
> ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.PCI0.PX40.FDC0._STA] (Node f7c1ebd0), AE_NO_MEMORY
> ACPI Error (uteval-0233): Method execution failed
[\_SB_.PCI0.PX40.FDC0._STA] (Node f7c1ebd0), AE_NO_MEMORY
The definition of ISMI in bios is listed in the following:
> Method (ISMI, 1, Serialized)
{
> Store (Arg0, TRTY)
> Store (0xA7, SMCM) }
TRTY is defined in ACPR NVS memory region and the start address of ACPR
memory region is defined in OperationRegion (FSEG, SystemMemory, 0x000FDF00,
0x0100)
It seems that the ACPR memory region can't be mapped correctly, which
causes that TRTY can't be accessed correctly.
From the dmesg log we can know that the start address of ACPR memory region
is 0x3FFFFF00 and region size is 0x200.
> OperationRegion (NVSR, SystemMemory, ACPR, 0x0200)
It seems that the memory region is beyond the ACPI NVS memory region.
>BIOS-e820: 000000003fffc000 - 000000003ffff000 (ACPI data)
>BIOS-e820: 000000003ffff000 - 0000000040000000 (ACPI NVS)
But it is very strange that the system can work well on the kernel of
2.6.25.
Will you please use the latest acpidump tool to get the following output as
required in comment #10?
The latest dump tool(pmtool-20071116) can be found in:
http://www.lesswatts.org/patches/linux_acpi/
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