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SMP alternatives

Posted Dec 15, 2005 18:59 UTC (Thu) by jzbiciak (✭ supporter ✭, #5246)
In reply to: SMP alternatives by Ross
Parent article: SMP alternatives

To enable hotplug SMP -> UP -> SMP, you'd definitely need to retain spinlocks, or at least put a lightweight "take lock" instruction there as opposed to the full spin. Fully NOPping spinlocks out would be a disaster, as you note.

Elsewhere, though, you could nuke/replace LOCK prefixes as needed.

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