From: Avi Kivity <avi@redhat.com>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Gleb Natapov <gleb@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
kvm@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Fr??d??ric Weisbecker <fweisbec@gmail.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Lin Ming <ming.m.lin@intel.com>,
Sheng Yang <sheng@linux.intel.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
oerg Roedel <joro@8bytes.org>,
Jes Sorensen <Jes.Sorensen@redhat.com>,
Zachary Amsden <zamsden@redhat.com>,
zhiteng.huang@intel.com, tim.c.chen@intel.com,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH V2 3/5] ara virt interface of perf to support kvm guest os statistics collection in guest os
Date: Wed, 23 Jun 2010 11:09:26 +0300 [thread overview]
Message-ID: <4C21C136.9070708@redhat.com> (raw)
In-Reply-To: <1277257421.2096.758.camel@ymzhang.sh.intel.com>
On 06/23/2010 04:43 AM, Zhang, Yanmin wrote:
>
>> A reset does not involve destroying a vm; you have to clean up as part
>> of the rest process.
>>
> What does 'reset' here mean? Is it a reboot or halt? If it's a halt, it involves
> destroying a vm. If a host user just kills the qemu process, is it a reset involving
> destroying a vm?
>
'reset' is either a complete reset ('system_reset' on the qemu monitor,
cycles through the bios etc.) or just an INIT signal to one vcpu.
Neither involves destroying a vm.
>> You aren't guaranteed a reboot notifier will be called. On the other
>> hand, we need a kexec handler.
>>
> ordinary kexec calls all reboot notifiers. Only crash kexec doesn't call them.
> I will implement a machine_ops.crash_shutdown callback.
>
Thanks.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2010-06-23 8:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 9:31 [PATCH V2 3/5] ara virt interface of perf to support kvm guest os statistics collection in guest os Zhang, Yanmin
2010-06-21 12:33 ` Avi Kivity
2010-06-22 3:12 ` Zhang, Yanmin
2010-06-22 8:29 ` Avi Kivity
2010-06-23 3:12 ` Zhang, Yanmin
2010-06-23 5:51 ` Avi Kivity
2010-06-24 3:36 ` Zhang, Yanmin
2010-06-24 7:59 ` Avi Kivity
2010-06-21 13:56 ` Gleb Natapov
2010-06-22 5:47 ` Zhang, Yanmin
2010-06-22 8:04 ` Avi Kivity
2010-06-23 1:43 ` Zhang, Yanmin
2010-06-23 8:09 ` Avi Kivity [this message]
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