[PATCH 10/12] kvm: Add kvm system event crash handler

[Denis V. Lunev]

From: Andrey Smetanin <asmeta...@virtuozzo.com>

KVM kernel can send guest crash events into userspace.
Appropriate guest crash handler is called when kernel guest
crash event received. Guest crash event recognized by a
KVM_SYSTEM_EVENT_CRASH type of system event.

Signed-off-by: Andrey Smetanin <asmeta...@virtuozzo.com>
Signed-off-by: Denis V. Lunev <d...@openvz.org>
CC: Paolo Bonzini <pbonz...@redhat.com>
CC: Andreas Färber <afaer...@suse.de>
---
 kvm-all.c                 | 4 ++++
 linux-headers/linux/kvm.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/kvm-all.c b/kvm-all.c
index 53e01d4..7a959b6 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1844,6 +1844,10 @@ int kvm_cpu_exec(CPUState *cpu)
                 qemu_system_reset_request();
                 ret = EXCP_INTERRUPT;
                 break;
+            case KVM_SYSTEM_EVENT_CRASH:
+                qemu_system_guest_panicked();
+                ret = 0;
+                break;
             default:
                 DPRINTF("kvm_arch_handle_exit\n");
                 ret = kvm_arch_handle_exit(cpu, run);
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index fad9e5c..409be37 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -317,6 +317,7 @@ struct kvm_run {
                struct {
 #define KVM_SYSTEM_EVENT_SHUTDOWN       1
 #define KVM_SYSTEM_EVENT_RESET          2
+#define KVM_SYSTEM_EVENT_CRASH          3
                        __u32 type;
                        __u64 flags;
                } system_event;
-- 
2.1.4

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