Re: [Qemu-devel] [PATCH 0/4] add ACPI Embedded Controller

[li guang]

在 2013-05-24五的 14:45 +0300，Michael S. Tsirkin写道：
> 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 
> > "ACPI Embedded Controller Interface Specification"
> > 
> > EC is a standard ACPI device, it plays flexible roles,
> > e.g. 
> > 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.
> > 
> > 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'.
> > 
> > patches for online/offline event handler of QEUM and 
> > linux kernel are writing, and will send once finished.
> > 
> > since EC is a common device, so I send pathes separately.
> 
> Do any non-linux guests support this device?
> 

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