ACPI summary available
smithi at nimnet.asn.au
Sat Jul 14 13:02:14 UTC 2007
On Fri, 13 Jul 2007, Nate Lawson wrote:
> Ian Smith wrote:
> > On Thu, 12 Jul 2007, Nate Lawson wrote:
> > > Kevin Oberman wrote:
> > > > Thanks to a note on /., I found what looks to be a very nice summary of
> > > > ACPI and its myriad of states (C, D, G, S, and P). While it does not go
> > > > into ASL, the ACPI tables, or things of that sort, it is probably a
> > > > good starting place for those interested in just what ACPI is all about.
> > > > It filled in some gaps (especially about D and lower C states) for me.
> > > >
> > > > One small request...I am far from an ACPI expert and there may be
> > > > serious flaws in the article that I am unaware of. If so, please let me
> > > > know so I don't recommend it more widely. IF it looks good, I plan to
> > > > post a message about it to mobile at .
> > > >
> > > > http://www.techarp.com/showarticle.aspx?artno=420
> > >
> > > It's ok. It doesn't include much real knowledge such as the fact that
> > > S2 has seldom been observed on a real system. It includes very
> > > processor-rev specific stuff such as which P states are supported on
> > > which CPUs. The diagram leaves out the embedded controller completely.
> > Short of your shelf of books, deep specs and the code, can you suggest
> > any other useful online ACPI in-a-nutshell references for neophytes?
Indeed. I'd forgotten that acpi-debug has good reference links, but not:
> Usenix paper
Thanks for this Nate .. on a quick skim so far it covers much of the
background and history I lack. Keep me off the streets for a while.
Thanks also to Alex.
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