linux-kernel - Re: [PATCH v2] acpi: Fix regression where _PPC is not read at boot even when ignore

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Message-Id: <200904291519.29683.trenn@suse.de>
Date:	Wed, 29 Apr 2009 15:19:28 +0200
From:	Thomas Renninger <trenn@...e.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Len Brown <lenb@...nel.org>, Matthew Garrett <mjg59@...f.ucam.org>,
	"Darrick J. Wong" <djwong@...ibm.com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	cpufreq@...r.kernel.org, linux-acpi@...r.kernel.org,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: [PATCH v2] acpi: Fix regression where _PPC is not read at boot even when ignore_ppc=0

On Monday 20 April 2009 12:45:29 Ingo Molnar wrote:
> 
> * Thomas Renninger <trenn@...e.de> wrote:
> 
> > On Monday 20 April 2009 07:13:51 Len Brown wrote:
> > > FYI,
> > > Thanks to Ebay, I now have a T60:-)
> > Hmm, Lenovo sold a lot different machines as T60.
> > I found an acpidump of a T60 here without any _PPC function
> > at all.
> > 
> > > and so i put the DSDT here:
> > > http://bugzilla.kernel.org/show_bug.cgi?id=13139
> > > 
> > > I'll poke at this in more detail soon...
> > Ingo, can you place yours somewhere too, please.
> > This one should be taken into account for _PPC code changes
> > as it seem to implement some corner case.
> 
> Sure, find it attached below.
> 
> 	Ingo
> 
> DSDT @ 0x7f6e65e7
>   0000: 44 53 44 54 65 c7 00 00 01 49 4c 45 4e 4f 56 4f  
...
Ingo, did you do a BIOS update in between?
The DSDT and SSDTs you added do not contain a _PPC function.
These ACPI tables definitely do not suffer from an initial _PPC
evaluation.

    Thomas
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