Dave Jones wrote:
On Wed, Jul 04, 2007 at 08:41:39AM -0700, Jeremy Fitzhardinge wrote:
> I'd already posted a patch to remove smp alternatives. I thought it had
> been merged already, but I guess it's in Andi's queue.
What was the rationale behind that? Given many distros have now
moved to shipping just an SMP kernel, this seems like a step backwards?
No, there's two mechanisms. There's the clobber the lock prefix thing,
which is unaffected. And there's smp_alternatives, which was a more
ambitious mechanism to completely replace instructions in the SMP vs
non-SMP cases, which is completely unused and therefore removed.
J
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