Re: [Xen-devel] ACPI shutdown unreliable with win7?

[Ross Philipson <ross.philipson@xxxxxxxxx>]

On 05/29/2015 11:11 AM, Ian Campbell wrote:
> On Fri, 2015-05-29 at 16:06 +0100, Paul Durrant wrote:
> > > FWIW We appear to wait 200s, if we were seeing failures due to windows
> > > update then I'd be inclined to extend that, but I think right now that
> > > would be premature, unless WU happens with no status on the screen.
> > No, you'd see something. Perhaps our ACPI lid/power switch code is just buggy 
> > then?
> It seems to work reliably for the WinXP tests, FWIW...
>
> Ian.
One thing I find confusing is that the firmware code does not even have 
a power button device (PNP0C0C) or the fixed feature power button that 
is enabled in the FADT (flag == PWR_BUTTON bit 4). So I don't see how 
the shutdown is purely an ACPI function. Is there something else to the 
story? Is it relying on PV tools to do it?
Ross

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--
Ross Philipson

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