Drivers: hv: restore hypervcall page cleanup before kexec
We need to cleanup the hypercall page before doing kexec/kdump or the new
kernel may crash if it tries to use it. Reuse the now-empty hv_cleanup
function renaming it to hyperv_cleanup and moving to the arch specific
code.
Fixes: 8730046c1498 ("Drivers: hv vmbus: Move Hypercall page setup out of common code")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 8e81346..f8ebe13 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -962,7 +962,7 @@
ret = bus_register(&hv_bus);
if (ret)
- goto err_cleanup;
+ return ret;
hv_setup_vmbus_irq(vmbus_isr);
@@ -1004,9 +1004,6 @@
bus_unregister(&hv_bus);
-err_cleanup:
- hv_cleanup(false);
-
return ret;
}
@@ -1462,7 +1459,7 @@
/* Make sure conn_state is set as hv_synic_cleanup checks for it */
mb();
cpuhp_remove_state(hyperv_cpuhp_online);
- hv_cleanup(false);
+ hyperv_cleanup();
};
static void hv_crash_handler(struct pt_regs *regs)
@@ -1475,7 +1472,7 @@
*/
vmbus_connection.conn_state = DISCONNECTED;
hv_synic_cleanup(smp_processor_id());
- hv_cleanup(true);
+ hyperv_cleanup();
};
static int __init hv_acpi_init(void)
@@ -1535,7 +1532,6 @@
&hyperv_panic_block);
}
bus_unregister(&hv_bus);
- hv_cleanup(false);
for_each_online_cpu(cpu) {
tasklet_kill(hv_context.event_dpc[cpu]);
}