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Re: [Qemu-devel] [virtio-comment] [PATCH] *** Vhost-pci RFC v2 ***

From: Wang, Wei W
Subject: Re: [Qemu-devel] [virtio-comment] [PATCH] *** Vhost-pci RFC v2 ***
Date: Mon, 27 Jun 2016 02:01:24 +0000

On Sun 6/19/2016 10:14 PM, Wei Wang wrote:
> This RFC proposes a design of vhost-pci, which is a new virtio device type.
> The vhost-pci device is used for inter-VM communication.
> Changes in v2:
> 1. changed the vhost-pci driver to use a controlq to send acknowledgement
>    messages to the vhost-pci server rather than writing to the device
>    configuration space;
> 2. re-organized all the data structures and the description layout;
> 3. removed the VHOST_PCI_CONTROLQ_UPDATE_DONE socket message, which
> is redundant;
> 4. added a message sequence number to the msg info structure to identify
> socket
>    messages, and the socket message exchange does not need to be blocking;
> 5. changed to used uuid to identify each VM rather than using the QEMU process
>    id

One more point should be added is that the server needs to send periodic socket 
messages to check if the driver VM is still alive. I will add this message 
support in next version.  (*v2-AR1*)

> Wei Wang (1):
>   Vhost-pci RFC v2: a new virtio device for inter-VM communication
>  vhost-pci.patch | 341
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 341 insertions(+)
>  create mode 100755 vhost-pci.patch

Hi Michael,

Would you be able to look into the design? Thanks.


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