Re: [virtio-dev] [PATCH v2 1/1] virtio-ism: introduce new device virtio-ism

[Halil Pasic <pasic@linux.ibm.com>]

On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo <xuanzhuo@linux.alibaba.com> wrote:

> > > +\begin{description}
> > > +\item[\field{ev_type}] The type of event, the driver can get the size of the
> > > +    structure based on this.
> > > +
> > > +\item[\field{offset}] The offset of ism regions with the event.  
> >
> > Offset with respect to what?  
> 
> Used to specify a region. Offset is the position of this ISM Region inside the
> memory of Device.

An offset is per definition always relative to something. I would have
thought this is an offset relative to the beginning of *the* virtio
shared memory region identified by the ismid 1. But since you claim that
there may be multiple virtio shared memory regions with the shmid 1 I'm
heavily confused. What is here "the memory of Device"?