From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: [PATCH] x86/mm: Make sure the event channel is
 released accurately
Date: Fri, 17 Feb 2012 08:38:29 +0100
Message-ID: <20120217073829.GA21330@aepfle.de>
References: <9fd12f919ddbd1592711.1329462943@h00166998.china.huawei.com>
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To: hongkaixing@huawei.com
Cc: bicky.shi@huawei.com, xiaowei.yang@huawei.com, xen-devel@lists.xensource.com, yanqiangjun@huawei.com, hanweidong@huawei.com
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On Fri, Feb 17, hongkaixing@huawei.com wrote:

>     In xenpaging source code,there is an interdomain communication between dom0
> and domU. In mem_event_enable(),the function alloc_unbound_xen_event_channel()
> allocates a free port for domU, and then it will be bound with dom0.
> When xenpaging tears down,it just frees dom0's event channel port by
> xc_evtchn_unbind(), leaves domU's port still occupied.
>     So we add the patch to free domU's port when xenpaging exits.
> We need double free interdomain eventchannel. First free domainU port,
> and leave domain 0 port unbond, Then free domain 0 port.
> 
> Signed-off-by??Kaixing Hong <hongkaixing@huawei.com>,
> Signed-off-by??Zhen Shi <bicky.shi@huawei.com>

Acked-by: Olaf Hering <olaf@aepfle.de>