arch/arm/include/asm/set_memory.h

   1 /*
   2  * Copyright (C) 1999-2002 Russell King
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _ASMARM_SET_MEMORY_H
  10 #define _ASMARM_SET_MEMORY_H
  11
  12 #ifdef CONFIG_MMU
  13 int set_memory_ro(unsigned long addr, int numpages);
  14 int set_memory_rw(unsigned long addr, int numpages);
  15 int set_memory_x(unsigned long addr, int numpages);
  16 int set_memory_nx(unsigned long addr, int numpages);
  17 #else
  18 static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; }
  19 static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; }
  20 static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
  21 static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
  22 #endif
  23
  24 #ifdef CONFIG_STRICT_KERNEL_RWX
  25 void set_kernel_text_rw(void);
  26 void set_kernel_text_ro(void);
  27 #else
  28 static inline void set_kernel_text_rw(void) { }
  29 static inline void set_kernel_text_ro(void) { }
  30 #endif
  31
  32 #endif