On Wed, Jan 11, 2023 at 10:12:38PM +0100, Halil Pasic wrote:
> On Wed, 11 Jan 2023 19:08:53 +0800
> Xuan Zhuo wrote:
>
> > > > +The device shares memory to the driver based on shared memory regions
exposes memory to the driver btw. "share" is already overused in this
text.
> > > >
On Thu, 12 Jan 2023 20:31:24 +0800
Xuan Zhuo wrote:
> > > Shmid is used to define what this sharing memory is used to do, not its
> > > unique
> > > identifier.
> >
> > As far as I can tell the shmid is supposed to uniquely identify a single
> > shared memory region!
> >
> > " A device may
On Fri, Jan 13, 2023 at 02:24:14PM +0800, Xuan Zhuo wrote:
> On Fri, 13 Jan 2023 10:29:49 +0800, Jason Wang wrote:
> > On Fri, Jan 13, 2023 at 9:59 AM Xuan Zhuo
> > wrote:
> > >
> > > On Thu, 12 Jan 2023 16:41:32 +0100, Halil Pasic
> > > wrote:
> > > > On Thu, 12 Jan 2023 15:30:58 +0100
> > >
On Fri, Jan 13, 2023 at 9:59 AM Xuan Zhuo wrote:
>
> On Thu, 12 Jan 2023 16:41:32 +0100, Halil Pasic wrote:
> > On Thu, 12 Jan 2023 15:30:58 +0100
> > Cornelia Huck wrote:
> >
> > > >>
> > > >> I like that: we don't want to talk about hosts/VMMs/etc. as we
> > > >> fundamentally deal with
On Thu, 12 Jan 2023 16:41:32 +0100, Halil Pasic wrote:
> On Thu, 12 Jan 2023 15:30:58 +0100
> Cornelia Huck wrote:
>
> > >>
> > >> I like that: we don't want to talk about hosts/VMMs/etc. as we
> > >> fundamentally deal with devices and drivers, but sharing between guests
> > >> is of course the
On Thu, Jan 12 2023, Halil Pasic wrote:
> On Thu, 12 Jan 2023 15:30:58 +0100
> Cornelia Huck wrote:
>
>> >>
>> >> I like that: we don't want to talk about hosts/VMMs/etc. as we
>> >> fundamentally deal with devices and drivers, but sharing between guests
>> >> is of course the obvious use case.
On Thu, 12 Jan 2023 15:30:58 +0100
Cornelia Huck wrote:
> >>
> >> I like that: we don't want to talk about hosts/VMMs/etc. as we
> >> fundamentally deal with devices and drivers, but sharing between guests
> >> is of course the obvious use case.
> >>
> >> I'm just wondering how best to express
On Thu, Jan 12 2023, Xuan Zhuo wrote:
> On Thu, 12 Jan 2023 09:42:05 +0100, Cornelia Huck wrote:
>> On Thu, Jan 12 2023, "Michael S. Tsirkin" wrote:
>>
>> > On Thu, Jan 12, 2023 at 10:01:25AM +0800, Jason Wang wrote:
>> >> On Wed, Jan 11, 2023 at 11:11 PM Halil Pasic wrote:
>> >> >
>> >> > On
On Thu, 12 Jan 2023 01:56:14 -0500
"Michael S. Tsirkin" wrote:
> I think fundamentally from spec POV memory is shared between devices.
Right, but with the gid stuff and the corresponding rules shared between
two or more arbitrary virtio-ism devices won't do. We need to find a way
to express the
On Thu, Jan 12 2023, "Michael S. Tsirkin" wrote:
> On Thu, Jan 12, 2023 at 10:01:25AM +0800, Jason Wang wrote:
>> On Wed, Jan 11, 2023 at 11:11 PM Halil Pasic wrote:
>> >
>> > On Wed, 11 Jan 2023 19:08:53 +0800
>> > Xuan Zhuo wrote:
>> >
>> > > > > +ISM(Internal Shared Memory) device provides
On Wed, Jan 11, 2023 at 10:12:38PM +0100, Halil Pasic wrote:
> On Wed, 11 Jan 2023 19:08:53 +0800
> Xuan Zhuo wrote:
>
> > > > +The device shares memory to the driver based on shared memory regions
> > > > +\ref{sec:Basic Facilities of a Virtio Device / Shared Memory Regions}.
> > > > +However,
On Thu, Jan 12, 2023 at 10:01:25AM +0800, Jason Wang wrote:
> On Wed, Jan 11, 2023 at 11:11 PM Halil Pasic wrote:
> >
> > On Wed, 11 Jan 2023 19:08:53 +0800
> > Xuan Zhuo wrote:
> >
> > > > > +ISM(Internal Shared Memory) device provides the ability to share
> > > > > memory between
> > > > >
On Wed, Jan 11, 2023 at 11:11 PM Halil Pasic wrote:
>
> On Wed, 11 Jan 2023 19:08:53 +0800
> Xuan Zhuo wrote:
>
> > > > +ISM(Internal Shared Memory) device provides the ability to share
> > > > memory between
> > > > +different VMs launched from the same entity.
> > >
> > > Launched by instead
On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo wrote:
> > > +The device shares memory to the driver based on shared memory regions
> > > +\ref{sec:Basic Facilities of a Virtio Device / Shared Memory Regions}.
> > > +However, it does not need to allocate physical memory during
> > >
On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo wrote:
> > > +\subsection{Permissions}\label{sec:Device Types / Network Device /
> > > Device Operation / Permission}
> > > +
> > > +The permissions of a ism region determine whether this ism region can be
> > > +attached and the read and write
On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo 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.
> >
> >
On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo wrote:
> >
> > > +Large shared memories are divided into multiple chunks, and one
> > > time
> >
> > "Memories" sounds wrong here. I guess what you used to call "regions"
> > you now call "chunks". But I may be wrong.
>
> A ism region
On Wed, 11 Jan 2023 19:08:53 +0800
Xuan Zhuo wrote:
> > > +ISM(Internal Shared Memory) device provides the ability to share memory
> > > between
> > > +different VMs launched from the same entity.
> >
> > Launched by instead of from? Maybe introduce a catchy name for the
> > "entity that
On Fri, 23 Dec 2022 16:13:54 +0800
Xuan Zhuo wrote:
> The virtio ism device provides and manages many memory ism regions in
> host. These ism regions can be alloc/attach/detach by driver. Every
[..]
Hi Xuan Zhou!
Some words in advance. While I'm supportive of the general idea, I find
the
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