netdev - Re: AF_VSOCK status

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Message-ID: <20160412140301.GC29405@stefanha-x1.localdomain>
Date:	Tue, 12 Apr 2016 15:03:01 +0100
From:	Stefan Hajnoczi <stefanha@...hat.com>
To:	Antoine Martin <antoine@...afix.co.uk>
Cc:	netdev@...r.kernel.org
Subject: Re: AF_VSOCK status

On Mon, Apr 11, 2016 at 06:53:05PM +0700, Antoine Martin wrote:
> > There are a few existing ways to achieve that without involving 
> > virtio-vsock: vhost-user or ivshmem.
> Yes, I've looked at those and they seem a bit overkill for what we
> want to achieve. We don't want sharing with multiple guests, or
> interrupts.
> All we want is a chunk of host memory to be accessible from the guest..

ivshmem does that.  It operates in two modes, it sounds like you want
the first and simpler mode ("ivshmem-plain").

Take a look at hw/misc/ivshmem.c in QEMU.

Stefan

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