Re: [Qemu-devel] [RFC] create a single workqueue for each vm to update vm irq routing table

[Paolo Bonzini]

Il 28/11/2013 12:23, Gleb Natapov ha scritto:
>>> > > Unless what ? :) Unless reader is scheduled out?
>> > 
>> > Yes.  Or unless my brain is scheduled out in the middle of a sentence.
>> > 
> So we will have to disable preemption in a reader to prevent big latencies for
> a writer, no?

I don't think that's necessary.  The writer itself could also be
scheduled out, and the reader critical sections are really small.  Let's
wait for Zhang to try SRCU and report back.

Paolo