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/* 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_ */
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