diff options
Diffstat (limited to 'arch/x86/mm/mmap.c')
| -rw-r--r-- | arch/x86/mm/mmap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c index 529ab79..19ad095 100644 --- a/arch/x86/mm/mmap.c +++ b/arch/x86/mm/mmap.c @@ -30,6 +30,7 @@ #include <linux/limits.h> #include <linux/sched/signal.h> #include <linux/sched/mm.h> +#include <linux/compat.h> #include <asm/elf.h> struct va_alignment __read_mostly va_align = { @@ -153,6 +154,19 @@ void arch_pick_mmap_layout(struct mm_struct *mm) #endif } +unsigned long get_mmap_base(int is_legacy) +{ + struct mm_struct *mm = current->mm; + +#ifdef CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES + if (in_compat_syscall()) { + return is_legacy ? mm->mmap_compat_legacy_base + : mm->mmap_compat_base; + } +#endif + return is_legacy ? mm->mmap_legacy_base : mm->mmap_base; +} + const char *arch_vma_name(struct vm_area_struct *vma) { if (vma->vm_flags & VM_MPX) |
