From mboxrd@z Thu Jan  1 00:00:00 1970
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Subject: Re: Xen Security Advisory 155 (CVE-2015-8550) -
 paravirtualized drivers incautious about shared memory
Date: Tue, 22 Dec 2015 14:19:19 +0100
Message-ID: <20151222131919.GK2748@var>
References: <CAPQw5r=U+419dth5DccatJ8Ai2wVGMavFLSFX4Uo_ZvJWf7OWg@mail.gmail.com>
	<alpine.DEB.2.02.1512221223440.3096@kaball.uk.xensource.com>
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, security@xen.org, Eric Shelton <eshelton@pobox.com>
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Stefano Stabellini, on Tue 22 Dec 2015 12:24:35 +0000, wrote:
> MiniOS for QEMU stubdom has frontends, such as mini-os/blkfront.c and
> mini-os/netfront.c, not backends.

There is one backend, tpmback.  It however doesn't use a ring.

Samuel