Re: [Qemu-devel] [5323] Implement an fd pool to get real AIO with posix-aio

[Gerd Hoffmann]

Anthony Liguori wrote:
>> Are there plans to support vectored block requests with the thread pool
>> implementation?
>>   
> 
> Yes, that's the primary reason for doing a new thread pool
> implementation.

Cool.

> Of course, we need a zero-copy DMA API before such a
> thing would make sense.

Hmm, quick check of the IDE code indeed shows a copy happening there.
Why is it needed?  My xen disk backend doesn't copy data.  Does that
mean might have done something wrong?  Does the virtio backend copy data
too?

Disclaimer: I don't know much about ide dma ...

cheers,
  Gerd