> Funny, are IPI really absolute nmi on sparc? I am honestly curious,
> for what purpose such IPIs were designed. Theay do not look useful.
I would expect they were created for things like cache and tlb flushing,
not executing arbitrary functions :)
> The fix is worth than problem was in any case. Waiting for timer
> under semaphore is not a good idea.
The patch to slab.c from Juan avoids grabbing any locks inside
functions called via smp_call_function, so it should be safe.
Anton
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