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Re: Xen release announcement and Virtio/Fusa
- To: Artem Mygaiev <Artem_Mygaiev@xxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 30 Nov 2021 09:30:49 +0100
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- Cc: Bertrand Marquis <bertrand.marquis@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "publicity@xxxxxxxxxxxxxxxxxxxx" <publicity@xxxxxxxxxxxxxxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>
- Delivery-date: Tue, 30 Nov 2021 08:31:04 +0000
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On Mon, Nov 29, 2021 at 09:08:21PM +0000, Artem Mygaiev wrote:
> 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.
Thanks! I'm adding those to the release blog post.
Would you also like to provide a Community Quote for the 4.16
release, like you did for the 4.15 one [0]?
Thanks, Roger.
[0] https://xenproject.org/2021/04/08/xen-project-hypervisor-4-15/
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