Re: [Qemu-devel] [PATCH 08/15] virtio: decrease size of VirtQueueElement

[Paolo Bonzini]

Il 30/07/2014 16:40, Michael S. Tsirkin ha scritto:
> As long as you relying on this, why not allocate in_sg/out_sg
> separately?

Because allocations can be expensive.

> In any case, a bunch of code needs to be audited to make sure
> no one assumes we can always stick VIRTQUEUE_MAX_SIZE there.
> 
> But what really worries me is this is an optimization patch
> without any numbers accompanying it.

I agree.

> I would say split this out from your virtio blk work,
> work on this separately.

This, too.

Paolo