Re: [Qemu-devel] [SeaBIOS] [PATCH v17] Add pvpanic device driver

[Hu Tao]

On Wed, May 15, 2013 at 09:21:54AM +0200, Laszlo Ersek wrote:
> On 04/05/13 09:17, Hu Tao wrote:
> 
> > +            Method(RDPT, 0, NotSerialized) {
> > +                Store(PEPT, Local0)
> > +                Return (Local0)
> > +            }
> > +
> > +            Method(WRPT, 1, NotSerialized) {
> > +                Store(Arg0, PEPT)
> > +            }
> 
> Please excuse my asking, I haven't been following this -- who's supposed
> to call these methods? The latest guest kernel patch I managed to find
> ([PATCH v7] kvm: notify host when the guest is panicked -- probably
> obsolete by now) appears to do a direct outl().

An old version calls WRPT but is buggy, so you see the outl version.
This patch is in seabios before the outl version. If you think these
methods are needless, feel free to send a patch.