Bug#624268: [squeeze] include important changes from 2.6.32.39
On Wed, Apr 27, 2011 at 01:35:06AM +0100, Ben Hutchings wrote:
> On Tue, Apr 26, 2011 at 06:17:08PM -0600, dann frazier wrote:
> [...]
> > > 6f396d4a x86, cpu: Fix regression in AMD errata checking code
> >
> > fixes hangs on some K8 systems
>
> I believe this is a fixup for these:
>
> [...]
> > > d4274252 x86, AMD: Set ARAT feature on AMD processors
> > > 7a3b25c0 x86, cpu: Clean up AMD erratum 400 workaround
> > > bba4804e x86, cpu: AMD errata checking framework
> >
> > These avoid switching to HPET timers in deep C states on AMD
> > CPUs. Though obviously an improvement, I'm not really sure what makes
> > these candidates for stable - unless people have been seeing hangs w/
> > the broadcast timer code on AMD systems?
>
> I'm dubious about the value of these quite large changes, as you may
> have seen in discussion on stable-review. Given that no-one was able
> to explain what bug is fixed, and there is a functional change hidden
> in the 'cleanup' patch which again no-one was able to explain, I would
> favour reverting these.
+1 - I've got them reverted in my local tree, will commit after some testing.
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