Messages in this thread | | | Subject | Re: 'global' rq->clock | From | Benjamin Herrenschmidt <> | Date | Sun, 04 May 2008 08:30:55 +1000 |
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On Sat, 2008-05-03 at 12:27 -0700, David Miller wrote: > > ( although please note that the growing generalization that goes on > > _did_ find a subtle nohz problem on sparc64 early in the merge > window, > > so it's not like these changes are totally useless to you. ) > > Note that this bug theoretically exists on every platform, > even x86, and only sparc64 is fixed at the moment by adding > the irq_{entry,exit}() guards around all of it's IPI handlers.
What is the bug ?
IPIs on power are normal interrupts, so they do happen in irq_entry/exit blocks but I'm curious to know what the root bug is :-)
Ben.
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