arch/parisc/include/asm/mman.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_MMAN_H__
   3 #define __ASM_MMAN_H__
   4
   5 #include <linux/fs.h>
   6 #include <uapi/asm/mman.h>
   7
   8 /* PARISC cannot allow mdwe as it needs writable stacks */
   9 static inline bool arch_memory_deny_write_exec_supported(void)
  10 {
  11         return false;
  12 }
  13 #define arch_memory_deny_write_exec_supported arch_memory_deny_write_exec_supported
  14
  15 static inline unsigned long arch_calc_vm_flag_bits(struct file *file, unsigned long flags)
  16 {
  17         /*
  18          * The stack on parisc grows upwards, so if userspace requests memory
  19          * for a stack, mark it with VM_GROWSUP so that the stack expansion in
  20          * the fault handler will work.
  21          */
  22         if (flags & MAP_STACK)
  23                 return VM_GROWSUP;
  24
  25         return 0;
  26 }
  27 #define arch_calc_vm_flag_bits(file, flags) arch_calc_vm_flag_bits(file, flags)
  28
  29 #endif /* __ASM_MMAN_H__ */