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path: root/drivers/hv/vmbus_drv.c
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Diffstat (limited to 'drivers/hv/vmbus_drv.c')
-rw-r--r--drivers/hv/vmbus_drv.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 31748a21d8f9..1ed9b32853a1 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1071,6 +1071,18 @@ static void hv_kexec_handler(void)
hv_cleanup();
};
+static void hv_crash_handler(struct pt_regs *regs)
+{
+ vmbus_initiate_unload();
+ /*
+ * In crash handler we can't schedule synic cleanup for all CPUs,
+ * doing the cleanup for current CPU only. This should be sufficient
+ * for kdump.
+ */
+ hv_synic_cleanup(NULL);
+ hv_cleanup();
+};
+
static int __init hv_acpi_init(void)
{
int ret, t;
@@ -1104,6 +1116,7 @@ static int __init hv_acpi_init(void)
goto cleanup;
hv_setup_kexec_handler(hv_kexec_handler);
+ hv_setup_crash_handler(hv_crash_handler);
return 0;
@@ -1118,6 +1131,7 @@ static void __exit vmbus_exit(void)
int cpu;
hv_remove_kexec_handler();
+ hv_remove_crash_handler();
vmbus_connection.conn_state = DISCONNECTED;
hv_synic_clockevents_cleanup();
vmbus_disconnect();