[S390] kernel: Add z/VM LGR detection

[deliverable/linux.git] / arch / s390 / kernel / smp.c

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 734e644972ab488d1b289b730295819006d17076..d15b6c937088ec817824b196f8cf01c500027373 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -40,6 +40,7 @@
 #include <asm/lowcore.h>
 #include <asm/sclp.h>
 #include <asm/vdso.h>
+#include <asm/debug.h>
 #include "entry.h"
 
 enum {
@@ -406,6 +407,7 @@ void smp_send_stop(void)
        __load_psw_mask(psw_kernel_bits | PSW_MASK_DAT);
        trace_hardirqs_off();
 
+       debug_set_critical();
        cpumask_copy(&cpumask, cpu_online_mask);
        cpumask_clear_cpu(smp_processor_id(), &cpumask);