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-rw-r--r--arch/s390/mm/vmem.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index b26649233d12..24a66670f5c3 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -763,6 +763,8 @@ void __init vmem_map_init(void)
if (static_key_enabled(&cpu_has_bear))
set_memory_nx(0, 1);
set_memory_nx(PAGE_SIZE, 1);
+ if (debug_pagealloc_enabled())
+ set_memory_4k(0, ident_map_size >> PAGE_SHIFT);
pr_info("Write protected kernel read-only data: %luk\n",
(unsigned long)(__end_rodata - _stext) >> 10);