23 lines
619 B
C
23 lines
619 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
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#define _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
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DECLARE_STATIC_KEY_FALSE(uaccess_flush_key);
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/* Prototype for function defined in exceptions-64s.S */
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void do_uaccess_flush(void);
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static __always_inline void allow_user_access(void __user *to, const void __user *from,
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unsigned long size)
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{
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}
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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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{
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if (static_branch_unlikely(&uaccess_flush_key))
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do_uaccess_flush();
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}
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#endif /* _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H */
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