ACPI SSDT tables

DISCUSSION Valentin Priescu 1 participant 1 message Mar 2, 2012 ACPI

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Valentin Priescu

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2012-03-02 12:44 UTC #0 lore raw

Hello,

I'm trying to get the processor P states from the ACPI driver but unfortunately the _PSS objects are not listed in the ACPI namespace. This is because some SSDT tables are not loaded. I checked the linux code and it seams that an SSDT table is loaded when a device is detected in a PCI slot, through PCI hotplug driver (it gets the SSDT header using SAL calls). However, I'm working on a different kernel which doesn't have this feature(SAL) and I'm wondering if there is another way to get the address of SSDT tables for each CPU, so that I can load them into the ACPI namespace. Any idea is appreciated.

Best regards,
--
Valentin Priescu.