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__ */
30
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