On Tue, 14 Sep 2010 11:44:45 +0300 Andriy Gapon <[email protected]> wrote:
> Additionally, it seems that we do not currently have any support for > Functional > Fixed Hardware (FFH) way of providing C states. In this case _CST returns GAS > of a register used to enter a C state with address space ID set to > ACPI_ADR_SPACE_FIXED_HARDWARE (0x7f/127). Such addresses should be handled > in a > special way: > ftp://download.intel.com/technology/IAPC/acpi/downloads/30222305.pdf > > Currently we simply (and silently) ignore such _CST entries. > I think that this should be useful (if not necessary) with mwait. I have a proof-of-concept, quick'n'dirty patch against pre-r212541 to utilize FFH _CST. Unfortunately I have no time to catch up the latest and fantastic work by mav, though. -- -|-__ YAMAMOTO, Taku | __ < <[email protected]> - A chicken is an egg's way of producing more eggs. -
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