Message-ID: <47BAC961.6030808@fenrir.org.uk>
Date: Tue, 19 Feb 2008 12:19:45 +0000
From: Brian Morrison <bdm@fenrir.org.uk>
Organization: The Fool and Bladder Face-Jumping Team
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1.9) Gecko/20071031 Thunderbird/2.0.0.9 Mnenhy/0.7.5.0
MIME-Version: 1.0
To: kernel@vger.kernel.org
Subject: Intel Core2Duo mobile - how does the VID get set?
OpenPGP: id=E79E0778
Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAFVBMVEU8PDpvaFEREREpKiXC
 wsD//////v6hSyaYAAABLElEQVQ4jZ3TwW7DIAwAUFOqnbFCf4DtA5K62jloTu+VWs6rFPL/nzAg
 WUY7qNb5EqInY8dW4FIJ+C84X4GRR+apCGgRNR/vge0WERvN/g5QiQhSiCGDkSclAQAboajzObCS
 JgRtOqLhmgqB44nZzmDMK5H+OCzAETY0iyHs33y6amLNFjaGliTQVh9TDRf6Adgb00I0AIU4JLCo
 IEmo0Yb2Quc6AXPIAJD7+arYOM7tohUxJwZReszgJhYINyGWkZzXjDtwqTyI8EnLaV2UjXfpdBzZ
 4u5ntbGz7fdLWOgKrpd0+L3BECei7jk4E7VlkES+BC7A8BRcmgewK0L/AF5q8F6ET8qHlcGpCjIf
 VgbnB9BWwZfgdlj57ww1UPlM/gR97SqLXOzqNqrwBbAjNHgb3BUMAAAAAElFTkSuQmCC
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 806
Lines: 22

After a fair bit of Googling and reading around, I'm none the wiser 
about exactly how Linux 2.6.x sets the processor VID (or for that matter 
how it decides the FID settings) when using the ondemand governor and 
cpufreq stuff.

Can anyone tell me a) whether this is obtained from the BIOS, something 
in the MSR of the processor or elsewhere and b) whether there is an 
interface in /proc or /sys where one can find out what is set and modify it?

I'm not subscribed to the list so a Cc: would be appreciated, cheers!

-- 

Brian Morrison

bdm@fenrir.org.uk

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/