From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked Date: Wed, 14 Mar 2012 12:08:06 +0200 Message-ID: <4F606E06.8070302@redhat.com> References: <4F58664D.1070800@cn.fujitsu.com> <4F58943E.1050402@redhat.com> <4F595B31.9090301@cn.fujitsu.com> <4F5DBC26.7060204@cn.fujitsu.com> <4F5DD0FD.9070904@redhat.com> <20120313091843.GB3800@redhat.com> <4F5F25BF.7060100@redhat.com> <4F6056FE.3020202@cn.fujitsu.com> <20120314095114.GA4136@amit.redhat.com> <4F606D38.2070107@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Gleb Natapov , kvm list , Jan Kiszka , qemu-devel , "linux-kernel@vger.kernel.org" , Amit Shah , KAMEZAWA Hiroyuki To: Wen Congyang Return-path: In-Reply-To: <4F606D38.2070107@cn.fujitsu.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org List-Id: kvm.vger.kernel.org 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