linux-kernel - [PATCH]qemu: deal with guest paniced event

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Date:	Mon, 27 Feb 2012 11:05:58 +0800
From:	Wen Congyang <wency@...fujitsu.com>
To:	kvm list <kvm@...r.kernel.org>, Avi Kivity <avi@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	linux-kernel@...r.kernel.org, qemu-devel <qemu-devel@...gnu.org>
Subject: [PATCH]qemu: deal with guest paniced event

When the host knows the guest is paniced, it will set
exit_reason to KVM_EXIT_GUEST_PANIC. So if qemu receive
this exit_reason, we can send a event to tell management
application that the guest is paniced.

Signed-off-by: Wen Congyang <wency@...fujitsu.com>
---
 kvm-all.c                 |    3 +++
 linux-headers/linux/kvm.h |    1 +
 monitor.c                 |    3 +++
 monitor.h                 |    1 +
 4 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/kvm-all.c b/kvm-all.c
index c4babda..ae428ab 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1190,6 +1190,9 @@ int kvm_cpu_exec(CPUState *env)
                     (uint64_t)run->hw.hardware_exit_reason);
             ret = -1;
             break;
+        case KVM_EXIT_GUEST_PANIC:
+            monitor_protocol_event(QEVENT_GUEST_PANICED, NULL);
+            break;
         case KVM_EXIT_INTERNAL_ERROR:
             ret = kvm_handle_internal_error(env, run);
             break;
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index f6b5343..45dd031 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -163,6 +163,7 @@ struct kvm_pit_config {
 #define KVM_EXIT_OSI              18
 #define KVM_EXIT_PAPR_HCALL	  19
 #define KVM_EXIT_S390_UCONTROL	  20
+#define KVM_EXIT_GUEST_PANIC	  21
 
 /* For KVM_EXIT_INTERNAL_ERROR */
 #define KVM_INTERNAL_ERROR_EMULATION 1
diff --git a/monitor.c b/monitor.c
index 953e748..9802792 100644
--- a/monitor.c
+++ b/monitor.c
@@ -494,6 +494,9 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
         case QEVENT_WAKEUP:
             event_name = "WAKEUP";
             break;
+        case QEVENT_GUEST_PANICED:
+            event_name = "GUEST_PANICED";
+            break;
         default:
             abort();
             break;
diff --git a/monitor.h b/monitor.h
index 0d49800..a62da93 100644
--- a/monitor.h
+++ b/monitor.h
@@ -41,6 +41,7 @@ typedef enum MonitorEvent {
     QEVENT_DEVICE_TRAY_MOVED,
     QEVENT_SUSPEND,
     QEVENT_WAKEUP,
+    QEVENT_GUEST_PANICED,
     QEVENT_MAX,
 } MonitorEvent;
 
-- 
1.7.1

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