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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120320154517.GG27928@redhat.com>
Date:	Tue, 20 Mar 2012 17:45:17 +0200
From:	Gleb Natapov <gleb@...hat.com>
To:	Wen Congyang <wency@...fujitsu.com>
Cc:	kvm list <kvm@...r.kernel.org>, qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Avi Kivity <avi@...hat.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>
Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

On Tue, Mar 20, 2012 at 05:59:16PM +0800, Wen Congyang wrote:
> At 03/19/2012 03:33 PM, Wen Congyang Wrote:
> > 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@...r.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?
> 
> Anybody can decide which solution to use?
> 
To make an informed decision we need to have at least raw idea how
virtio-serial variant will look.

--
			Gleb.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/