From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:57076)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1VjPVG-0003qQ-T7
	for qemu-devel@nongnu.org; Thu, 21 Nov 2013 03:20:52 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1VjPVA-0005kP-Sx
	for qemu-devel@nongnu.org; Thu, 21 Nov 2013 03:20:46 -0500
Received: from [222.73.24.84] (port=52500 helo=song.cn.fujitsu.com)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lig.fnst@cn.fujitsu.com>) id 1VjPVA-0005jQ-Gj
	for qemu-devel@nongnu.org; Thu, 21 Nov 2013 03:20:40 -0500
Message-ID: <528DC1E5.8090408@cn.fujitsu.com>
Date: Thu, 21 Nov 2013 16:18:45 +0800
From: Li Guang <lig.fnst@cn.fujitsu.com>
MIME-Version: 1.0
References: <1385001528-12003-1-git-send-email-imammedo@redhat.com>	<1385001528-12003-17-git-send-email-imammedo@redhat.com>	<20131121071418.GB19703@redhat.com>
	<20131121081222.GG24886@G08FNSTD100614.fnst.cn.fujitsu.com>
In-Reply-To: <20131121081222.GG24886@G08FNSTD100614.fnst.cn.fujitsu.com>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=UTF-8; format=flowed
Subject: Re: [Qemu-devel] [PATCH 16/27] acpi: ich9: allow guest to clear SCI
 rised by GPE
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Hu Tao <hutao@cn.fujitsu.com>
Cc: peter.maydell@linaro.org, aliguori@amazon.com, marcel.a@redhat.com, qemu-devel@nongnu.org, stefanb@linux.vnet.ibm.com, mjt@tls.msk.ru, mdroth@linux.vnet.ibm.com, armbru@redhat.com, vasilis.liaskovitis@profitbricks.com, quintela@redhat.com, "Michael S. Tsirkin" <mst@redhat.com>, kraxel@redhat.com, stefanha@redhat.com, Igor Mammedov <imammedo@redhat.com>, pbonzini@redhat.com, lcapitulino@redhat.com, chegu_vinod@hp.com, afaerber@suse.de

Hu Tao wrote:
> On Thu, Nov 21, 2013 at 09:14:18AM +0200, Michael S. Tsirkin wrote:
>    
>> On Thu, Nov 21, 2013 at 03:38:37AM +0100, Igor Mammedov wrote:
>>      
>>> it fixes IRQ storm since guest isn't able to lower SCI IRQ
>>> after it has been handled when it clears GPE event.
>>>
>>> Signed-off-by: Igor Mammedov<imammedo@redhat.com>
>>>        
>> The storm is only on memory hotplug right?
>>      
> IIRC, it happens on cpu hotplug, too.
>
>
>
>    
:-), that made remember EC implementation,
with EC, SCI will be safer, I think.