diff options
| -rw-r--r-- | arch/s390/mm/mem_detect.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c index 0389d8d24358..185e70d3e153 100644 --- a/arch/s390/mm/mem_detect.c +++ b/arch/s390/mm/mem_detect.c @@ -41,7 +41,8 @@ void __init detect_memory_memblock(void) memblock_set_bottom_up(true); do { size = 0; - type = tprot(addr); + /* assume lowcore is writable */ + type = addr ? tprot(addr) : CHUNK_READ_WRITE; do { size += rzm; if (max_physmem_end && addr + size >= max_physmem_end) |