* Linus Torvalds <[email protected]> wrote:
> > Boots and runs fine. Fixes the freezes as well, which is not such a
> > big surprise, since basically any change in that function seems to
> > do that ;)
>
> Yeah, and that code really was *designed* to make all "locking in a
> loop" go away. So unlike the patches adding random barriers and
> cpu_relax() calls (which might fix it for some *particular* hw setup),
> I pretty much guarantee that you can never get that code into a
> situation where there is some lock being starved on *any* hw setup.
>
> Ingo, an ack for the patch, and I'll just apply it?
yeah. It's definitely better than what we had before. Maybe one day
someone frees us from this function =B-) We already had like 2-3 nasty
SMP bugs related to it in the last 10 years.
Acked-by: Ingo Molnar <[email protected]>
and kudos to Miklos for the patience to debug this bug!
Ingo
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