diff options
Diffstat (limited to 'arch/s390/include/asm/processor.h')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index ff1e25d515a8..add764a2be8c 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -83,6 +83,7 @@ void cpu_detect_mhz_feature(void); extern const struct seq_operations cpuinfo_op; extern void execve_tail(void); extern void __bpon(void); +unsigned long vdso_size(void); /* * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit. @@ -94,9 +95,10 @@ extern void __bpon(void); (_REGION3_SIZE >> 1) : (_REGION2_SIZE >> 1)) #define TASK_SIZE_MAX (-PAGE_SIZE) -#define STACK_TOP (test_thread_flag(TIF_31BIT) ? \ - _REGION3_SIZE : _REGION2_SIZE) -#define STACK_TOP_MAX _REGION2_SIZE +#define VDSO_BASE (STACK_TOP + PAGE_SIZE) +#define VDSO_LIMIT (test_thread_flag(TIF_31BIT) ? _REGION3_SIZE : _REGION2_SIZE) +#define STACK_TOP (VDSO_LIMIT - vdso_size() - PAGE_SIZE) +#define STACK_TOP_MAX (_REGION2_SIZE - vdso_size() - PAGE_SIZE) #define HAVE_ARCH_PICK_MMAP_LAYOUT |