Re: [Qemu-devel] [PATCH v4 2/3] qemu-timer: make qemu_timer_mod_ns() and qemu_timer_del() thread-safe

[Paolo Bonzini]

Il 30/09/2013 15:34, Alex Bligh ha scritto:
> 
> I think the most likely change here is that the walkers might
> move outside the BQL. Given modification of this list is so rare,
> the lock would be very very read heavy, so RCU is probably a
> sensible option.

I agree.  Keeping the write side on the BQL is sane, but RCU-protecting
the read side actually makes the rules simpler.

Mike, would you like to give it a shot?

Paolo