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