If the guest crash and the crash/panic handler calls
the KVM panic hypercall the KVM API notifies this with
KVM_EXIT_PANIC.
The VM status gets extended with "panic" to obtain
this status via the QEMU monitor.
---
kvm-all.c | 4 ++++
kvm/include/linux/kvm.h | 1 +
monitor.c | 8 ++++++--
sysemu.h | 1 +
vl.c | 2 ++
5 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 629f727..9771f91 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1029,6 +1029,10 @@ int kvm_cpu_exec(CPUState *env)
qemu_system_reset_request();
ret = EXCP_INTERRUPT;
break;
+ case KVM_EXIT_PANIC:
+ panic = 1;
+ ret = 1;
+ break;
case KVM_EXIT_UNKNOWN:
fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n",
(uint64_t)run->hw.hardware_exit_reason);
diff --git a/kvm/include/linux/kvm.h b/kvm/include/linux/kvm.h
index e46729e..207871c 100644
--- a/kvm/include/linux/kvm.h
+++ b/kvm/include/linux/kvm.h
@@ -161,6 +161,7 @@ struct kvm_pit_config {
#define KVM_EXIT_NMI 16
#define KVM_EXIT_INTERNAL_ERROR 17
#define KVM_EXIT_OSI 18
+#define KVM_EXIT_PANIC 19
/* For KVM_EXIT_INTERNAL_ERROR */
#define KVM_INTERNAL_ERROR_EMULATION 1
diff --git a/monitor.c b/monitor.c
index 59a3e76..fd6a881 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2599,13 +2599,17 @@ static void do_info_status_print(Monitor *mon, const
QObject *data)
monitor_printf(mon, "paused");
}
+ if (qdict_get_bool(qdict, "panic")) {
+ monitor_printf(mon, " (panic)");
+ }
+
monitor_printf(mon, "\n");
}
static void do_info_status(Monitor *mon, QObject **ret_data)
{
- *ret_data = qobject_from_jsonf("{ 'running': %i, 'singlestep': %i }",
- vm_running, singlestep);
+ *ret_data = qobject_from_jsonf("{ 'running': %i, 'singlestep': %i,
'panic': %i }",
+ vm_running, singlestep, panic);
}
static qemu_acl *find_acl(Monitor *mon, const char *name)
diff --git a/sysemu.h b/sysemu.h
index a42d83f..8ab0168 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -12,6 +12,7 @@
extern const char *bios_name;
extern int vm_running;
+extern int panic;
extern const char *qemu_name;
extern uint8_t qemu_uuid[];
int qemu_uuid_parse(const char *str, uint8_t *uuid);
diff --git a/vl.c b/vl.c
index e0191e1..1d9a068 100644
--- a/vl.c
+++ b/vl.c
@@ -185,6 +185,7 @@ int mem_prealloc = 0; /* force preallocation of physical
target memory */
int nb_nics;
NICInfo nd_table[MAX_NICS];
int vm_running;
+int panic = 0;
int autostart;
int incoming_expected; /* Started with -incoming and waiting for incoming */
static int rtc_utc = 1;
@@ -1407,6 +1408,7 @@ static void main_loop(void)
pause_all_vcpus();
cpu_synchronize_all_states();
qemu_system_reset();
+ panic = 0;
resume_all_vcpus();
}
if (qemu_powerdown_requested()) {
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
