diff options
Diffstat (limited to 'arch/s390/mm/vmem.c')
| -rw-r--r-- | arch/s390/mm/vmem.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index b403fa14847d..f810930aff42 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -415,6 +415,10 @@ void __init vmem_map_init(void) SET_MEMORY_RO | SET_MEMORY_X); __set_memory(__stext_dma, (__etext_dma - __stext_dma) >> PAGE_SHIFT, SET_MEMORY_RO | SET_MEMORY_X); + + /* we need lowcore executable for our LPSWE instructions */ + set_memory_x(0, 1); + pr_info("Write protected kernel read-only data: %luk\n", (unsigned long)(__end_rodata - _stext) >> 10); } |