[SeaBIOS] [PATCH] don't expose pvpanic device in the UI

[Hu Tao]

On Mon, Aug 05, 2013 at 09:26:32AM -0400, Paolo Bonzini wrote:
> > > > > This patch is a workaround to not show pvpanic in UI to avoid the
> > > > > problem in Windows.
> > > 
> > > It's not a workaround, it is a proper bugfix.
> > > 
> > > What versions of Windows did you test it on?  Did it hide the New
> > > Hardware wizard properly (I think it appears only on XP/2003)?
> > 
> > Windows XP. I didn't see hardware wizard, maybe it is because I tested
> > the same VM before and XP remembered the device and wasn't boring to
> > prompt again.
> > 
> > Tested in a freshly installed Windows XP, the device is hidden but
> > the hardware wizard is shown.
> 
> Then unfortunately this patch alone is useless. :(
> 
> What would work is treat this as a 2000/XP bug and use _OSI to probe
> for Vista/2008 or later ("Windows 2006" and "Windows 2006.1", says
> drivers/acpi/acpica/utosi.c).  Perhaps on top of this one.

Tested on Windows Server 2008, Windows Server 2008 R2 and Windows Server
2012. On Windows Server 2008, the New Hardware Wizward still shows up.
On the latter two, the New Hardware Wizward doesn't show up.
So we should test for "Windows 2009" and later? How can I know from
which version of Windows the New Hardware Wizward is fixed? I searched
on google but couldn't find a related page.