RE: Xen release announcement and Virtio/Fusa

[Artem Mygaiev <Artem_Mygaiev@xxxxxxxx>]

Hi Roger, Bertrand

Please see below (Virtio and Zephyr)

*VirtIO*
Xen community continued to work on development of VirtIO support for Arm 
processors introducing "extended memory regions" mechanism. The extended memory 
region (unpopulated memory range) is a region of guest physical address space 
which is unused and could be safely used to create external mappings instead of 
ballooning out real RAM pages. VirtIO backends can use this mechanism to 
pre-map some guest memory in advance or to cache mappings in order to improve 
transport performance. Some other work has been done for the Xen toolstack to 
handle VirtIO MMIO devices in general and VirtIO block devices particularly.

*Zephyr RTOS*
As a result of collaboration between Zephyr project and Xen project of Linux 
foundation, starting version 2.7.0, Zephyr RTOS supports some basic features 
like PV Console allowing it to run on Xen. With support of Xen Enlighten page 
and XenBus on review, and some other features in development like grant tables, 
XenBus and starting Zephyr as Domain-0, Xen is getting closer to a full 
implementation of the RTOS-based “thin dom0” targeting Embedded and Safety use 
cases.

I am sorry for possible language issues - English is not my native tongue. Will 
appreciate if someone proofread this.

Best regards,
 -- Artem

-----Original Message-----
From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx> 
Sent: понедельник, 29 ноября 2021 г. 18:01
To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>; Artem Mygaiev 
<Artem_Mygaiev@xxxxxxxx>; publicity@xxxxxxxxxxxxxxxxxxxx; Ian Jackson 
<iwj@xxxxxxxxxxxxxx>
Subject: Re: Xen release announcement and Virtio/Fusa



> On 29 Nov 2021, at 16:00, Bertrand Marquis <bertrand.marquis@xxxxxxx> wrote:
>
> Hi,
>
>> On 29 Nov 2021, at 15:58, Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
>>
>> On Wed, Nov 24, 2021 at 02:08:12PM -0800, Stefano Stabellini wrote:
>>> On Wed, 24 Nov 2021, Bertrand Marquis wrote:
>>>> Hi Artem/Stefano
>>>>
>>>> Anything we could say on work being done around Virtio and Xen since last 
>>>> Xen release that would be nice to add to Xen release announcement ?
>>
>> IS there any update from the VirtIO working group, or should I just 
>> drop the section from the 4.16 release blog post?
>
> Stefano is on leave so nothing will come from him.
>
> If Artem has nothing then I guess you will have to drop it.

Please ignore Artem answered :-)

>
> Cheers
> Bertrand
>
>>
>> Thanks, Roger.
>

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