Keep the FC6 kernel at 2.6.20 or move it to 2.6.21?

[Dave Jones]

On Sun, Apr 29, 2007 at 06:36:32PM +0200, dragoran wrote:
 > 2.6.21.1 is out ... so whats the plan now? Relase a FC6 
 > update(updates-testing) or stick with 2.6.20.x until 2.6.22 is 
 > out/2.6.21 get some more testing?

We could do a rebase to .21 this week, and push that out to testing,
and if anything critical turns up before that becomes deemed stable,
we could push a branched build off of .20 directly to updates.

Most of the scary stuff (new libata pata drivers etc), we'd keep off,
so things shouldn't be too bad.  The timer changes for tickless are
probably the only remaining scary thing. For that we have a few choices.
- Leave NO_HZ off.
  Feature parity with FC6, though the code has still changed, and
  may still find regressions. Probably the safest option.
- Turn NO_HZ on.
  Early preview of F7 features, saves power yadayada, may find new
  bugs. (Gets us that nice fuzzy 'f6 bugs are f7 bugs' bonus though)
- Turn NO_HZ on, but do the same as we did for MSI (enable the config,
  but only if you boot with a command line option).
  Might find us even more regressions, that aren't even relevant upstream.

Chuck?

	Dave

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