From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wen Congyang Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked Date: Mon, 19 Mar 2012 15:33:35 +0800 Message-ID: <4F66E14F.3040809@cn.fujitsu.com> References: <4F58664D.1070800@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: kvm list , qemu-devel , "linux-kernel@vger.kernel.org" , Avi Kivity , "Daniel P. Berrange" , KAMEZAWA Hiroyuki , Jan Kiszka , Gleb Natapov Return-path: In-Reply-To: <4F58664D.1070800@cn.fujitsu.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org At 03/08/2012 03:57 PM, Wen Congyang Wrote: > We can know the guest is paniced when the guest runs on xen. > But we do not have such feature on kvm. > > Another purpose of this feature is: management app(for example: > libvirt) can do auto dump when the guest is crashed. If management > app does not do auto dump, the guest's user can do dump by hand if > he sees the guest is paniced. > > I touch the hypervisor instead of using virtio-serial, because > 1. it is simple > 2. the virtio-serial is an optional device, and the guest may > not have such device. > > Changes from v2 to v3: > 1. correct spelling > > Changes from v1 to v2: > 1. split up host and guest-side changes > 2. introduce new request flag to avoid changing return values. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > Hi all: we neet this feature, but we don't decide how to implement it. We have two solution: 1. use vmcall 2. use virtio-serial. I will not change this patch set before we decide how to do it. Can we make a decision recent days? Thanks Wen Congyang