linux-kernel - Re: [Qemu-devel] [PATCH v8] kvm: notify host when the guest is panicked

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Message-ID: <CAFEAcA-yfqWpRH2mGgiY6uPNF8WQNB3po8yLANAkQYwa+RS+xQ@mail.gmail.com>
Date:	Tue, 14 Aug 2012 20:58:58 +0100
From:	Peter Maydell <peter.maydell@...aro.org>
To:	Anthony Liguori <anthony@...emonkey.ws>
Cc:	Marcelo Tosatti <mtosatti@...hat.com>,
	Yan Vugenfirer <yvugenfi@...hat.com>,
	kvm list <kvm@...r.kernel.org>, Gleb Natapov <gleb@...hat.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	qemu-devel <qemu-devel@...gnu.org>, Avi Kivity <avi@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [Qemu-devel] [PATCH v8] kvm: notify host when the guest is panicked

On 14 August 2012 19:53, Anthony Liguori <anthony@...emonkey.ws> wrote:
> Forget about !x86 platforms.  They have their own way to do this sort of
> thing.  Think of this feature like a status LED on a motherboard.  These
> are very common and usually controlled by IO ports.

Please don't forget !x86 platforms, we are cute and loveable really :-)

> We're simply reserving a "status LED" for the guest to indicate that it
> has paniced.  Let's not over engineer this.

...not that QEMU actually has any kind of "front panel lights and switches"
interface at all, it might be nice to have one. I bet a lot of the embedded
boards have function DIP switches, heartbeat LEDs, etc etc...

-- PMM
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