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Diffstat (limited to 'arch/s390/lib/test_unwind.c')
-rw-r--r--arch/s390/lib/test_unwind.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c
index 7c988994931f..6bad84c372dc 100644
--- a/arch/s390/lib/test_unwind.c
+++ b/arch/s390/lib/test_unwind.c
@@ -205,12 +205,15 @@ static noinline int unwindme_func3(struct unwindme *u)
/* This function must appear in the backtrace. */
static noinline int unwindme_func2(struct unwindme *u)
{
+ unsigned long flags;
int rc;
if (u->flags & UWM_SWITCH_STACK) {
- preempt_disable();
+ local_irq_save(flags);
+ local_mcck_disable();
rc = CALL_ON_STACK(unwindme_func3, S390_lowcore.nodat_stack, 1, u);
- preempt_enable();
+ local_mcck_enable();
+ local_irq_restore(flags);
return rc;
} else {
return unwindme_func3(u);

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