linux-kernel - Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

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Date:	Wed, 14 Mar 2012 12:08:06 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Wen Congyang <wency@...fujitsu.com>
CC:	Amit Shah <amit.shah@...hat.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	kvm list <kvm@...r.kernel.org>,
	qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Gleb Natapov <gleb@...hat.com>
Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

On 03/14/2012 12:04 PM, Wen Congyang wrote:
> > 
> > This is sufficient.  On the host, you can open /tmp/foo using a custom
> > program or nc (nc -U /tmp/foo).  On the guest, you can just open
> > /dev/virtio-ports/port1 and read/write into it.
>
> I have two questions:
> 1. does it OK to open this device when the guest is panicked?
>

On panic, I think it's best to reset the device and drive it directly
from the panic handler.

-- 
error compiling committee.c: too many arguments to function

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