41 lines
1 KiB
C
Executable file
41 lines
1 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_KUP_H_
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#define _ASM_POWERPC_KUP_H_
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#ifndef __ASSEMBLY__
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#include <asm/pgtable.h>
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#ifdef CONFIG_PPC_BOOK3S_64
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#include <asm/book3s/64/kup-radix.h>
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#else
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static inline void allow_user_access(void __user *to, const void __user *from,
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unsigned long size) { }
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static inline void prevent_user_access(void __user *to, const void __user *from,
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unsigned long size) { }
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#endif /* CONFIG_PPC_BOOK3S_64 */
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static inline void allow_read_from_user(const void __user *from, unsigned long size)
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{
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allow_user_access(NULL, from, size);
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}
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static inline void allow_write_to_user(void __user *to, unsigned long size)
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{
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allow_user_access(to, NULL, size);
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}
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static inline void prevent_read_from_user(const void __user *from, unsigned long size)
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{
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prevent_user_access(NULL, from, size);
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}
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static inline void prevent_write_to_user(void __user *to, unsigned long size)
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{
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prevent_user_access(to, NULL, size);
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}
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_POWERPC_KUP_H_ */
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