smi speedstep patch

John Baldwin jhb at
Mon Jul 16 15:12:40 UTC 2007

On Saturday 16 June 2007 01:09:27 pm Nate Lawson wrote:
> Nate Lawson wrote:
> > Nate Lawson wrote:
> >> If you have a pentium 3 that works for speedstep, please try this patch.
> >>  It fixes the PAE case.  Compile-tested.
> > 
> > Hmm, I see it's no longer getting the physical address, just virtual.
> > So need to fix that part. 
> Attached is the updated patch.  It uses the low kernel map where P=V and
> fixes the callback.  I just need someone who is using smi-speedstep
> (440bx chipset with pentium 3) to make sure the device still attaches.
> Patch should work on 6.x and 7.x.

Why do you need a V == P page?

John Baldwin

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