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Date: Wed, 16 May 2007 14:26:14 -1000
From: Joshua Hoblitt <jhoblitt@....hawaii.edu>
To: Daniel Drake <dsd@...too.org>
Cc: davej@...hat.com, duaneg@...da.com, prakash@...noor.de,
linux-kernel@...r.kernel.org, Ed Sweetman <safemode2@...cast.net>
Subject: Re: [PATCH] powernow-k8: depend on acpi-processor for SMP systems
I don't think this is quiet right either as Ed Sweetman has reported
that this issue doesn't occur on single socket/multi-core systems.
-J
--
On Thu, May 17, 2007 at 12:50:50AM +0100, Daniel Drake wrote:
> powernow-k8 uses PSB BIOS tables to read frequency info on UP systems, but
> on SMP it requires the acpi-processor driver. Kconfig should be updated
> accordingly to avoid the issues that users are running into.
>
> http://bugzilla.kernel.org/show_bug.cgi?id=8075
> https://bugs.gentoo.org/show_bug.cgi?id=178585
>
> Signed-off-by: Daniel Drake <dsd@...too.org>
>
> Index: linux/arch/i386/kernel/cpu/cpufreq/Kconfig
> ===================================================================
> --- linux.orig/arch/i386/kernel/cpu/cpufreq/Kconfig
> +++ linux/arch/i386/kernel/cpu/cpufreq/Kconfig
> @@ -81,6 +81,7 @@ config X86_POWERNOW_K7_ACPI
> config X86_POWERNOW_K8
> tristate "AMD Opteron/Athlon64 PowerNow!"
> select CPU_FREQ_TABLE
> + select ACPI_PROCESSOR if SMP
> depends on EXPERIMENTAL
> help
> This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
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