On 03/21/2013 02:35 AM, Hu Tao wrote: > Signed-off-by: Hu Tao <hu...@cn.fujitsu.com> > --- > docs/specs/pvpanic.txt | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > create mode 100644 docs/specs/pvpanic.txt
Grammar nits: > > diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt > new file mode 100644 > index 0000000..761d20c > --- /dev/null > +++ b/docs/specs/pvpanic.txt > @@ -0,0 +1,25 @@ > +PVPANIC DEVICE > +============== > + > +pvpanic device is a simulated ISA device, through which guest panic s/which/which a/ > +event is sent to qemu, and a QMP event is generated. This allows > +management apps(e.g. libvirt) to be notified and respond to the space before ( in English text. > +event. > + > +pvpanic uses port 0x505 by default to receive panic event from guest. s/receive/receive a/ s/from guest/from the guest/ > +The port is configurable by specifying ioport property. > + > +pvpanic device is defined with ACPI ID "QEMU0001". To send panic s/send/send a/ > +event, guest evaluates method WRPT, specifying a byte, bit 0 set, s/guest/the guest/ /byte, bit 0/byte with bit 0/ > +as argument. Other bits are reserved. > + > +To use it, one will have to: > + > +1. add the device by specifying `-device pvpanic' in the qemu command > + line. > + > +2. load pvpanic device driver in guest OS. s/in/in the/ > + > +The management app has the options of waiting for GUEST_PANICKED events, s/options/option/ > +and/or polling for guest-panicked RunState, to learn when the pvpanic > +device has fired a panic event. > -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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