[ofa-general] Re: [PATCH 08 of 11] anon-vma-rwsem

[Avi Kivity]

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