diff options
Diffstat (limited to 'arch/powerpc/mm/mmap.c')
| -rw-r--r-- | arch/powerpc/mm/mmap.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c index 75dc7faaf917..0d957a4c70fe 100644 --- a/arch/powerpc/mm/mmap.c +++ b/arch/powerpc/mm/mmap.c @@ -30,9 +30,16 @@ /* * Top of mmap area (just below the process stack). * - * Leave an at least ~128 MB hole. + * Leave at least a ~128 MB hole on 32bit applications. + * + * On 64bit applications we randomise the stack by 1GB so we need to + * space our mmap start address by a further 1GB, otherwise there is a + * chance the mmap area will end up closer to the stack than our ulimit + * requires. */ -#define MIN_GAP (128*1024*1024) +#define MIN_GAP32 (128*1024*1024) +#define MIN_GAP64 ((128 + 1024)*1024*1024UL) +#define MIN_GAP ((is_32bit_task()) ? MIN_GAP32 : MIN_GAP64) #define MAX_GAP (TASK_SIZE/6*5) static inline int mmap_is_legacy(void) |