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Date: Thu, 22 Nov 2012 13:38:32 +0100
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20121122123832.GA17156@stefanha-thinkpad.redhat.com>
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Subject: Re: [Qemu-devel] TCP based PCIE request forwarding
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: lementec fabien <fabien.lementec@gmail.com>, Cam Macdonell <cam@cs.ualberta.ca>, Nick Gasson <nick@nickg.me.uk>, qemu-devel <qemu-devel@nongnu.org>, fred.konrad@greensocs.com

On Thu, Nov 22, 2012 at 11:21:58AM +0100, Paolo Bonzini wrote:
> Il 22/11/2012 09:19, Stefan Hajnoczi ha scritto:
> >> > usage
> >> > -----
> >> > PCIEFW devices are instanciated using the following QEMU options:
> >> > -device \
> >> >  pciefw,\
> >> >  laddr=<local_addr>,\
> >> >  lport=<local_port>,\
> >> >  raddr=<remote_addr>,\
> >> >  rport=<remote_port>
> > Take a look at qemu_socket.h:socket_parse().  It should allow you to
> > support TCP, UNIX domain sockets, and arbitrary file descriptors.
> > 
> 
> Even better it could just be a chardev.  socket_parse() is only used by
> the (human) monitor interface.

The issue with chardev is that it's asynchronous.

In this case we cannot return from MemoryRegionOps->read() or
MemoryRegionOps->write() back to the event loop.

Stefan