Ubuntu 7.10 PowerNow! issue with future AMD processors

Langsdorf, Mark mark.langsdorf at amd.com
Wed Nov 28 20:40:39 UTC 2007

> > An updated version of the patch is included in the 
> > 2.6.23-rc3 kernel and should support all future AMD
> > processors, but it's a fairly large patch.  The
> > patch I intend to to submit is much smaller (~10 lines)
> > but only supports family 0x11 and earlier processors.
> > 
> > I'll submit the small patch for inclusion in 7.10,
> > and let Hardy take the larger patch for free.
> > 
> Ubuntu intends to support 7.10 until 2009.  Will the small patch be 
> adequate for this timeframe?  It would be preferable to do all the 
> necessary patching now rather than needing a second patch later.

It's possible that parts released in 2009 may 
not be family 0x11 and would fail with the small
patch.  The larger patch would work with them.
It's a question of how thorough you want to be.

The larger patch is essentially the 2.6.24 driver.
Should I just diff it against the 7.10 kernel and
submit that?

-Mark Langsdorf
Operating System Research Center

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