Avi Kivity wrote:
> Anthony Liguori wrote:
>>
>> With the IO thread, we don't have to worry about lost signals like we 
>> do in a VCPU thread so it's fine to just use select() and install 
>> signal handlers IIUC.
>>
>
> What about aio completions?  The only race-free way to handle both 
> posix aio completion and fd readiness is signals AFAIK.

We poll aio completion after the select don't we?  Worst case scenario 
we miss a signal and wait to poll after the next select event.  That's 
going to occur very often because of the timer.

Regards,

Anthony Liguori



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