Messages in this thread | | | Date | Thu, 15 May 2008 14:12:34 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH 08 of 11] anon-vma-rwsem |
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Robin Holt wrote: > Then we need to deposit the information needed to do the invalidate. > > Lastly, we would need to interrupt. Unfortunately, here we have a > thundering herd. There could be up to 16256 processors interrupting the > same processor. That will be a lot of work. It will need to look up the > mm (without grabbing any sleeping locks in either xpmem or the kernel) > and do the tlb invalidates. > >
You don't need to interrupt every time. Place your data in a queue (you do support rmw operations, right?) and interrupt. Invalidates from other processors will see that the queue hasn't been processed yet and skip the interrupt.
-- error compiling committee.c: too many arguments to function
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