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

Paolo Bonzini
2013-11-26T15:28:47Z

Il 26/11/2013 16:25, Avi Kivity ha scritto:
>> If we want to ensure, we need to use a different mechanism for
>> synchronization than the global RCU. QRCU would work; readers are not
>> wait-free but only if there is a concurrent synchronize_qrcu, which
>> should be rare.
>
> An alternative path is to convince ourselves that the hardware does not
> provide the guarantees that the current code provides, and so we can
> relax them.

No, I think it's a reasonable guarantee to provide.

Paolo