[Qemu-devel] Re: [PATCH v7 4/6] char: Add qemu_chr_write_nb() for nonblocking writes

[Gerd Hoffmann]

On 05/05/10 15:53, Anthony Liguori wrote:
> This patch adds optional control flow in a pretty crufty way to *some*
> backends but not all. This just adds a bunch of complexity that will
> certainly introduce bugs.

Amit plans to add support to the others as well.  Beside that there is a 
clearly defined backup plan:  In case the non-blocking interface isn't 
supported by $chardev it will fallback to use the blocking mode.

cheers,
  Gerd