Re: [PATCH v5 47/50] multi-process: Enable support for multiple devices in remote

[Jag Raman]

On 2/28/2020 11:44 AM, Stefan Hajnoczi wrote:
> On Mon, Feb 24, 2020 at 03:55:38PM -0500, Jagannathan Raman wrote:
> > From: Elena Ufimtseva <address@hidden>
> >
> > Add support to allow multiple devices to be configured in the
> > remote process
>
> This patch allows multiple devices to be addressed over a single UNIX
> domain socket.  This could be a scalability/performance bottleneck
> because an SMP guest can only talk to 1 device at a time.
>
> This approach doesn't address the qemu-storage-daemon use case where one
> device emulation process provides devices to multiple guests.  Multiple
> UNIX domain sockets are needed for that.
>
> Is multiplexing multiple devices over a single connection is a desirable
> feature?  The alternative of one UNIX domain socket per device instance
> seems more practical to me because it should perform better and solves
> the qemu-storage-daemon use case.

Hi Stefan,

We will implement a separate communication channel for each device in
the remote process, in the next series.

Thanks!
--
Jag

>