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From: li guang <lig.fnst@cn.fujitsu.com>
In-Reply-To: <20130524114528.GC7046@redhat.com>
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	<20130524114528.GC7046@redhat.com>
Date: Mon, 27 May 2013 08:20:57 +0800
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Subject: Re: [Qemu-devel] [PATCH 0/4] add ACPI Embedded Controller
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To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Stefan Berger <stefanb@linux.vnet.ibm.com>, qemu-devel@nongnu.org, Bruce Rogers <brogers@suse.com>, Joel Schopp <jschopp@linux.vnet.ibm.com>, Gerd Hoffmann <kraxel@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Andreas =?ISO-8859-1?Q?F=E4rber?= <afaerber@suse.de>, Isaku Yamahata <yamahata@valinux.co.jp>

=E5=9C=A8 2013-05-24=E4=BA=94=E7=9A=84 14:45 +0300=EF=BC=8CMichael S. Tsirk=
in=E5=86=99=E9=81=93=EF=BC=9A
> On Wed, May 22, 2013 at 11:46:33AM +0800, liguang wrote:
> > These patches try to add ACPI Embedded Controller (EC),
> > refer-to:
> > ACPI SPEC v5 chapter 5=20
> > "ACPI Embedded Controller Interface Specification"
> >=20
> > EC is a standard ACPI device, it plays flexible roles,
> > e.g.=20
> > power controller, it can control power sequence for
> > platform to enter or leave system state(0,1,3,4,5),
> > it can controller CPU fan by the temperature of sensor.
> > event carrier, it can pass events between platform
> > and OS, so OS can execute _Qxx method which defined
> > by yourself.
> >=20
> > So, I want to deliver CPU online/offline event between
> > OS and QEMU for CPU hotplug feature, then we will don't
> > need to "echo 1 > /sys/devices/system/cpu/cpu1/online"
> > again after 'cpu-add'.
> >=20
> > patches for online/offline event handler of QEUM and=20
> > linux kernel are writing, and will send once finished.
> >=20
> > since EC is a common device, so I send pathes separately.
>=20
> Do any non-linux guests support this device?
>=20

In fact, any OSes support ACPI will support this device.
so, windows will.