RE: [PATCH V5] virtio-transport: Clarify requirements

[Cornelia Huck <cohuck@redhat.com>]

On Tue, Jun 11 2024, Parav Pandit <parav@nvidia.com> wrote:

> Hi Viresh,
>
>> From: Viresh Kumar <viresh.kumar@linaro.org>
>> Sent: Tuesday, June 11, 2024 11:06 AM
>
> [..]
>> diff --git a/content.tex b/content.tex
>> index 0a62dce5f65f..e2a836327818 100644
>> --- a/content.tex
>> +++ b/content.tex
>> @@ -631,8 +631,86 @@ \section{Device Cleanup}\label{sec:General
>> Initialization And Device Operation /
>> 
>>  \chapter{Virtio Transport Options}\label{sec:Virtio Transport Options}
>> 
>> -Virtio can use various different buses, thus the standard is split -into virtio
>> general and bus-specific sections.
>> +Devices and drivers can use different transport methods to enable
>> +interaction, for example PCI, MMIO, or Channel I/O. The transport
>> +methods define various aspects of the communication between the device
>> +and the driver, like device discovery, exchanging capabilities,
>> +interrupt handling, data transfer, etc. For example, in a host/guest
>> +architecture, the host might expose a device to the guest on a PCI bus,
>> +and the guest will use a PCI-specific driver to interact with it.
>> +
>> +The standard contains sections describing the transport-agnostic parts
>> +of virtio, and sections describing how individual transports implement
>> +virtio.
>> +
>> +\section{Virtio Transport Requirements}\label{sec:Virtio Transport
>> +Options / Virtio Transport Requirements}
>> +
>> +There are some mechanisms that any transport is required to implement,
>> +and some requirements that devices and drivers are required to follow.
>> +
>> +\subsection{Transport Requirements}\label{sec:Virtio Transport Options
>> +/ Virtio Transport Requirements / Transport Requirements}
>> +
>> +A transport provides a mechanism for the driver to discover the device.
>> +
> I would like to add a normative.
>
> A transport MAY provide a mechanism to create and destroy virtio devices.
>
> (for example PCI transport provides this).
>

I'm not a fan of that statement: the transport already allows for the
driver to discover a device, whether that happens statically or
dynamically really is the choice of the transport, and I don't think we
should go into that much detail.

[I'll go offline now, so please don't expect further responses from me
right now...]