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Subject: Re: [virtio-comment] [PATCH RFC v2] clarify device reset
* Cornelia Huck (cohuck@redhat.com) wrote: > Properly specify that the method for the driver to request a > device reset is transport specific, and some action the device > has to take. > > Signed-off-by: Cornelia Huck <cohuck@redhat.com> > --- > > RFC -> RFC v2: > - moved reset spec to basic facilities > > --- > conformance.tex | 1 + > content.tex | 13 +++++++++++++ > 2 files changed, 14 insertions(+) > > diff --git a/conformance.tex b/conformance.tex > index eb3324053080..3be499ae3c5e 100644 > --- a/conformance.tex > +++ b/conformance.tex > @@ -271,6 +271,7 @@ \section{Conformance Targets}\label{sec:Conformance / Conformance Targets} > \begin{itemize} > \item \ref{devicenormative:Basic Facilities of a Virtio Device / Device Status Field} > \item \ref{devicenormative:Basic Facilities of a Virtio Device / Feature Bits} > +\item \ref{devicenormative:Basic Facilities of a Virtio Device / Device Reset} > \item \ref{devicenormative:Basic Facilities of a Virtio Device / Device Configuration Space} > \item \ref{devicenormative:Basic Facilities of a Virtio Device / Message Framing} > \item \ref{devicenormative:Basic Facilities of a Virtio Device / Virtqueues / The Virtqueue Descriptor Table} > diff --git a/content.tex b/content.tex > index 620c0e28c9a7..782ddf3ed78d 100644 > --- a/content.tex > +++ b/content.tex > @@ -193,6 +193,19 @@ \section{Notifications}\label{sec:Basic Facilities of a Virtio Device > terminology. Occasionally, the term event is used to refer to > a notification or a receipt of a notification. > > +\section{Device Reset}\label{sec:Basic Facilities of a Virtio Device / Device Reset} > + > +The driver may initiate a device reset at various times; notably, during > +device initialization and device cleanup. > + > +The mechanism used by the driver to initiate the reset is transport specific. > + > +\devicenormative{\subsection}{Device Reset}{Basic Facilities of a Virtio Device / Device Reset} > + > +A device MUST reinitialize device status to 0 after receiving a reset. > + > +A device MUST NOT send notifications after receiving a reset. > + This feels like a bit of a race in the description; a Device may have just sent a notification at the point that it receives a reset. When a driver initiates a reset, how does the driver know that the device has received it? Dave > \section{Device Configuration Space}\label{sec:Basic Facilities of a Virtio Device / Device Configuration Space} > > Device configuration space is generally used for rarely-changing or > -- > 2.26.2 > > > This publicly archived list offers a means to provide input to the > OASIS Virtual I/O Device (VIRTIO) TC. > > In order to verify user consent to the Feedback License terms and > to minimize spam in the list archive, subscription is required > before posting. > > Subscribe: virtio-comment-subscribe@lists.oasis-open.org > Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org > List help: virtio-comment-help@lists.oasis-open.org > List archive: https://lists.oasis-open.org/archives/virtio-comment/ > Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf > List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists > Committee: https://www.oasis-open.org/committees/virtio/ > Join OASIS: https://www.oasis-open.org/join/ > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
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