blob: aa54ac2e5659e799bf61059c36b297afe2f862a2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
#define _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
DECLARE_STATIC_KEY_FALSE(uaccess_flush_key);
/* Prototype for function defined in exceptions-64s.S */
void do_uaccess_flush(void);
static __always_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)
{
if (static_branch_unlikely(&uaccess_flush_key))
do_uaccess_flush();
}
#endif /* _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H */
|
