[Qemu-devel] Re: [PATCH 0/5] chardev, virtio-console: flow control, error handling

[Gerd Hoffmann]

So you mean just return -EAGAIN in case write returns with -EAGAIN?
Yeah, makes sense.

Yes.

Note that for EINTR you want re-enter write() through so callers don't 
have to worry about signals.

cheers,
  Gerd