linux-kernel - [PATCH v13 8/8] pv event: add document to describe the usage

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Message-Id: <816757411c0fd2e07bbd61c44134b27f6b6ba68e.1362051582.git.hutao@cn.fujitsu.com>
Date:	Thu, 28 Feb 2013 20:13:19 +0800
From:	Hu Tao <hutao@...fujitsu.com>
To:	kvm list <kvm@...r.kernel.org>, qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Gleb Natapov <gleb@...hat.com>,
	Blue Swirl <blauwirbel@...il.com>,
	Eric Blake <eblake@...hat.com>,
	Andrew Jones <drjones@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Sasha Levin <levinsasha928@...il.com>,
	Luiz Capitulino <lcapitulino@...hat.com>,
	Anthony Liguori <aliguori@...ibm.com>,
	Markus Armbruster <armbru@...hat.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Stefan Hajnoczi <stefanha@...hat.com>,
	Juan Quintela <quintela@...hat.com>,
	Orit Wasserman <owasserm@...hat.com>,
	Kevin Wolf <kwolf@...hat.com>,
	Wen Congyang <wency@...fujitsu.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Alexander Graf <agraf@...e.de>,
	Alex Williamson <alex.williamson@...hat.com>,
	Peter Maydell <peter.maydell@...aro.org>
Subject: [PATCH v13 8/8] pv event: add document to describe the usage

Signed-off-by: Hu Tao <hutao@...fujitsu.com>
---
 docs/pv-event.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 docs/pv-event.txt

diff --git a/docs/pv-event.txt b/docs/pv-event.txt
new file mode 100644
index 0000000..ac9e7fa
--- /dev/null
+++ b/docs/pv-event.txt
@@ -0,0 +1,17 @@
+KVM PV EVENT
+============
+
+kvm pv event allows guest OS to notify host OS of some events, for
+example, guest panic. Currently, there is one event supported, that
+is, guest panic. More events can be added later.
+
+By default, kvm pv event is disabled. In order to enable it, you have
+to specify enable_pv_event=on for -machine command line option, along
+with -global kvm_pv_event.panicked_action to specify the action taken
+when panic event has occurred. Aviable panic actions are: "none",
+"pause", "poweroff" and "reset". Following is example:
+
+  qemu-system-x86_64 -enable-kvm -machine pc-0.12,enable_pv_event=on \
+    -global kvm_pv_event.panicked_action=pause <other options>
+
+kvm pv event needs kvm support.
-- 
1.8.1.4

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