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

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Message-ID: <4F6854F4.3060703@cn.fujitsu.com>
Date:	Tue, 20 Mar 2012 17:59:16 +0800
From:	Wen Congyang <wency@...fujitsu.com>
To:	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>,
	Gleb Natapov <gleb@...hat.com>
Subject: Re: [PATCH 0/2 v3] kvm: notify host when guest panicked

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
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>>
> 
> 
> 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?

Thanks
Wen Congyang

> 
> Thanks
> Wen Congyang
> --
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