summaryrefslogblamecommitdiff
path: root/arch/powerpc/include/asm/kup.h
blob: d7312defbe1c2376afe6b514a25f06ae9a5a1482 (plain) (tree) 
69795cabe4cf ^




890274c2dc4c ^




69795cabe4cf ^


de78a9c42a79 ^


69795cabe4cf ^


0fb1c25ab523 ^






de78a9c42a79 ^






























69795cabe4cf ^



1
2
3
4

5
6
7
8

9
10

11
12

13
14

15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

51
52
53




                                      



                                    

                    

                        

                     





                                                





























                                                                                      


                                
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_KUP_H_
#define _ASM_POWERPC_KUP_H_

#ifdef CONFIG_PPC64
#include <asm/book3s/64/kup-radix.h>
#endif

#ifndef __ASSEMBLY__

#include <asm/pgtable.h>

void setup_kup(void);

#ifdef CONFIG_PPC_KUEP
void setup_kuep(bool disabled);
#else
static inline void setup_kuep(bool disabled) { }
#endif /* CONFIG_PPC_KUEP */

#ifdef CONFIG_PPC_KUAP
void setup_kuap(bool disabled);
#else
static inline void setup_kuap(bool disabled) { }
static inline void allow_user_access(void __user *to, const void __user *from,
				     unsigned long size) { }
static inline void prevent_user_access(void __user *to, const void __user *from,
				       unsigned long size) { }
#endif /* CONFIG_PPC_KUAP */

static inline void allow_read_from_user(const void __user *from, unsigned long size)
{
	allow_user_access(NULL, from, size);
}

static inline void allow_write_to_user(void __user *to, unsigned long size)
{
	allow_user_access(to, NULL, size);
}

static inline void prevent_read_from_user(const void __user *from, unsigned long size)
{
	prevent_user_access(NULL, from, size);
}

static inline void prevent_write_to_user(void __user *to, unsigned long size)
{
	prevent_user_access(to, NULL, size);
}

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_POWERPC_KUP_H_ */