linux-kernel - Re: [PATCH RFC v2 0/3] Support multiple VirtioConsoles.

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Date:	Tue, 08 Nov 2011 16:54:04 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Miche Baker-Harvey <miche@...gle.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 0/3] Support multiple VirtioConsoles.

On 11/08/11 11:29, Miche Baker-Harvey wrote:
> (Amit pointed out that the patches never went out. This is a resend of
> the series meant to go out on 11/2/2011; I've marked it "v2".)  
>
> This patchset applies to linux-next/next-20111102.
>
> This series implements support for multiple virtio_consoles using KVM.
>
> This patchset addresses several issues associated with trying to
> establish multiple virtio consoles. 
>
> I'm trying to start a guest via KVM that supports multiple virtual
> consoles, with getty's on each, and with some being console devices.
>
> These patches let me establish more than one VirtioConsole (I'm
> running eight at the moment), and enable console output appearing on
> one of them.  It still doesn't successfully generate console output on
> multiple VirtioConsoles.
>
> Let me apologise for my last patch having gotten into Linus' tree, and
> leaving other people to deal with crashes.  I had meant to be asking
> for guidance, but I didn't mark it as "RFC".
>
> This series reflects the input from Konrad Rzeszutek, Amit Shah, Stephen
> Boyd, and Rusty Russell.  I think we do have to limit hvc_alloc() to one
> thread.

It might be good to Cc these people in the future. I only found this
when scanning over lkml.

>
> I would appreciate any comments or feedback, or accept if appropriate.

I tested this against next-20111102 and I see duplicate messages on the
console. What's going on?

# echo hi > /dev/kmsg
[  132.960000] hi
[  132.960000] hi

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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