From d6f3609d2b4c6d0eec01f398cb685e50da3e6013 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Sat, 28 Jan 2017 12:37:14 -0700 Subject: 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 Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/vmbus_drv.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'drivers/hv/vmbus_drv.c') diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8e81346114d4..f8ebe13cf251 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -962,7 +962,7 @@ static int vmbus_bus_init(void) ret = bus_register(&hv_bus); if (ret) - goto err_cleanup; + return ret; hv_setup_vmbus_irq(vmbus_isr); @@ -1004,9 +1004,6 @@ err_alloc: bus_unregister(&hv_bus); -err_cleanup: - hv_cleanup(false); - return ret; } @@ -1462,7 +1459,7 @@ static void hv_kexec_handler(void) /* 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 @@ static void hv_crash_handler(struct pt_regs *regs) */ 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 @@ static void __exit vmbus_exit(void) &hyperv_panic_block); } bus_unregister(&hv_bus); - hv_cleanup(false); for_each_online_cpu(cpu) { tasklet_kill(hv_context.event_dpc[cpu]); } -- cgit v1.2.3