From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-4336-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [66.179.20.138]) by lists.oasis-open.org (Postfix) with ESMTP id DDB5358191C8 for ; Mon, 11 Jun 2018 06:44:45 -0700 (PDT) Date: Mon, 11 Jun 2018 16:44:34 +0300 From: "Michael S. Tsirkin" Message-ID: <20180611164417-mutt-send-email-mst@kernel.org> References: <20180611075640.19751-1-tiwei.bie@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180611075640.19751-1-tiwei.bie@intel.com> Subject: [virtio-dev] Re: [PATCH v3] content: enhance device requirements for feature bits To: Tiwei Bie Cc: cohuck@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, virtio-dev@lists.oasis-open.org, dan.daly@intel.com, cunming.liang@intel.com, zhihong.wang@intel.com List-ID: On Mon, Jun 11, 2018 at 03:56:40PM +0800, Tiwei Bie wrote: > Suggested-by: Michael S. Tsirkin > Signed-off-by: Tiwei Bie > Fixes: https://github.com/oasis-tcs/virtio-spec/issues/14 Acked-by: Michael S. Tsirkin > --- > v2: > - Refine the wording (Cornelia); > > v3: > - Refine the wording (MST); > > content.tex | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/content.tex b/content.tex > index f996fad..3c7d67d 100644 > --- a/content.tex > +++ b/content.tex > @@ -125,6 +125,13 @@ which was not offered. The device SHOULD accept any valid subset > of features the driver accepts, otherwise it MUST fail to set the > FEATURES_OK \field{device status} bit when the driver writes it. > > +If a device has successfully negotiated a set of features > +at least once (by accepting the FEATURES_OK \field{device > +status} bit during device initialization), then it SHOULD > +NOT fail re-negotiation of the same set of features after > +a device or system reset. Failure to do so would interfere > +with resuming from suspend and error recovery. > + > \subsection{Legacy Interface: A Note on Feature > Bits}\label{sec:Basic Facilities of a Virtio Device / Feature > Bits / Legacy Interface: A Note on Feature Bits} > -- > 2.17.0 --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org