diff options
Diffstat (limited to 'arch/powerpc/mm/kasan/book3s_32.c')
| -rw-r--r-- | arch/powerpc/mm/kasan/book3s_32.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/kasan/book3s_32.c b/arch/powerpc/mm/kasan/book3s_32.c index 202bd260a009..35b287b0a8da 100644 --- a/arch/powerpc/mm/kasan/book3s_32.c +++ b/arch/powerpc/mm/kasan/book3s_32.c @@ -19,7 +19,8 @@ int __init kasan_init_region(void *start, size_t size) block = memblock_alloc(k_size, k_size_base); if (block && k_size_base >= SZ_128K && k_start == ALIGN(k_start, k_size_base)) { - int k_size_more = 1 << (ffs(k_size - k_size_base) - 1); + int shift = ffs(k_size - k_size_base); + int k_size_more = shift ? 1 << (shift - 1) : 0; setbat(-1, k_start, __pa(block), k_size_base, PAGE_KERNEL); if (k_size_more >= SZ_128K) |