Re: Disabling x86 System Management Mode

From: Andrew Shewmaker
Date: Wed Apr 18 2007 - 10:06:40 EST


On 4/18/07, John Sigler <linux.kernel@xxxxxxx> wrote:
Andi Kleen wrote:

> There are usually chipset specific bits that can be set to disable
> SMMs. See the datasheet if you can get them. Unfortunately most
> chipset vendors don't give out data sheets easily.

I managed to find the south bridge data sheet.

http://linux.kernel.free.fr/VT82C686B.pdf

(I'm still looking for the north bridge data sheet.)

Could someone point me in the right direction?

The LinuxBIOS folks had a thread on SMM recently. You don't have to
worry about SMM if you can use their stuff.

http://www.linuxbios.org/pipermail/linuxbios/2006-December/017861.html

same thread, but continued

http://www.linuxbios.org/pipermail/linuxbios/2007-January/017905.html

--
Andrew Shewmaker
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