diff options
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 566d0d71a1e7..1e6c33d01c05 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -426,6 +426,7 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) } #ifdef CONFIG_MMU +#ifdef CONFIG_KUSER_HELPERS /* * The vectors page is always readable from user space for the * atomic helpers. Insert it into the gate_vma so that it is visible @@ -458,10 +459,14 @@ int in_gate_area_no_mm(unsigned long addr) { return in_gate_area(NULL, addr); } +#define is_gate_vma(vma) ((vma) = &gate_vma) +#else +#define is_gate_vma(vma) 0 +#endif const char *arch_vma_name(struct vm_area_struct *vma) { - return (vma == &gate_vma) ? "[vectors]" : + return is_gate_vma(vma) ? "[vectors]" : (vma->vm_mm && vma->vm_start == vma->vm_mm->context.sigpage) ? "[sigpage]" : NULL; } |