linux-kernel - [PATCH 7/7 v6] deal with panicked event accoring to '-machine panic

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Date:	Fri, 06 Jul 2012 17:41:59 +0800
From:	Wen Congyang <wency@...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>,
	Avi Kivity <avi@...hat.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Gleb Natapov <gleb@...hat.com>
Subject: [PATCH 7/7 v6] deal with panicked event accoring to '-machine panic_action=action'

The action is the same as -onpanic parameter.

Signed-off-by: Wen Congyang <wency@...fujitsu.com>
---
 qemu-config.c   |    4 ++++
 qemu-options.hx |    4 +++-
 vl.c            |    7 +++++++
 3 files changed, 14 insertions(+), 1 deletions(-)

diff --git a/qemu-config.c b/qemu-config.c
index 5c3296b..805e7c4 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -595,6 +595,10 @@ static QemuOptsList qemu_machine_opts = {
             .name = "dt_compatible",
             .type = QEMU_OPT_STRING,
             .help = "Overrides the \"compatible\" property of the dt root node",
+        }, {
+            .name = "panic_action",
+            .type = QEMU_OPT_STRING,
+            .help = "The action what QEMU will do when the guest is panicked",
         },
         { /* End of list */ }
     },
diff --git a/qemu-options.hx b/qemu-options.hx
index 4a061bf..083a21d 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -33,7 +33,9 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
     "                property accel=accel1[:accel2[:...]] selects accelerator\n"
     "                supported accelerators are kvm, xen, tcg (default: tcg)\n"
     "                kernel_irqchip=on|off controls accelerated irqchip support\n"
-    "                kvm_shadow_mem=size of KVM shadow MMU\n",
+    "                kvm_shadow_mem=size of KVM shadow MMU\n"
+    "                panic_action=none|pause|poweroff|reset controls what QEmu\n"
+    "                will do when the guest is panicked",
     QEMU_ARCH_ALL)
 STEXI
 @item -machine [type=]@var{name}[,prop=@...{value}[,...]]
diff --git a/vl.c b/vl.c
index 1a68257..091c43b 100644
--- a/vl.c
+++ b/vl.c
@@ -2301,6 +2301,7 @@ int main(int argc, char **argv, char **envp)
     };
     const char *trace_events = NULL;
     const char *trace_file = NULL;
+    const char *panic_action = NULL;
 
     atexit(qemu_run_exit_notifiers);
     error_set_progname(argv[0]);
@@ -3372,10 +3373,16 @@ int main(int argc, char **argv, char **envp)
         kernel_filename = qemu_opt_get(machine_opts, "kernel");
         initrd_filename = qemu_opt_get(machine_opts, "initrd");
         kernel_cmdline = qemu_opt_get(machine_opts, "append");
+        panic_action = qemu_opt_get(machine_opts, "panic_action");
     } else {
         kernel_filename = initrd_filename = kernel_cmdline = NULL;
     }
 
+    if (panic_action && select_panicked_action(panic_action) == -1) {
+        fprintf(stderr, "Unknown -panic_action parameter\n");
+        exit(1);
+    }
+
     if (!kernel_cmdline) {
         kernel_cmdline = "";
     }
-- 
1.7.1

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