From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Darrick J. Wong" <djwong@us.ibm.com>
Subject: Re: [PATCH v2] acpi: Fix regression where _PPC is not read at boot
	even when ignore_ppc=0
Date: Wed, 29 Apr 2009 14:43:12 -0700
Message-ID: <20090429214312.GX7917@plum>
References: <20090415225348.GW8311@plum> <200904201113.31371.trenn@suse.de> <20090420104529.GB6670@elte.hu> <200904291519.29683.trenn@suse.de>
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To: Thomas Renninger <trenn@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>, Len Brown <lenb@kernel.org>, Matthew Garrett <mjg59@srcf.ucam.org>, linux-kernel <linux-kernel@vger.kernel.org>, cpufreq@vger.kernel.org, linux-acpi@vger.kernel.org

On Wed, Apr 29, 2009 at 03:19:28PM +0200, Thomas Renninger wrote:

> 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.

P-state tables are probably loaded from separate SSDT tables "CPU0IST" and
"CPU1IST".  You can download 'em with something like this:

# dmesg | grep IST
ACPI: SSDT BFD30566, 01FB (r1  PmRef    CPU0IST   3000 INTL 20030224)
           ^addr     ^length

# acpidump --addr 0xBFD30566 --length 0x1FB > cpu0ist
# iasl -d cpu0ist

Then paste cpu0ist.dsl somewhere.

--D