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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
#define _ASM_POWERPC_BOOK3S_64_KUP_RADIX_H
#include <linux/jump_label.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 */

Filemanager

Name Type Size Permission Actions
hash-4k.h File 3.06 KB 0644
hash-64k.h File 7.25 KB 0644
hash.h File 6.16 KB 0644
hugetlb.h File 2.02 KB 0644
kup-radix.h File 649 B 0644
mmu-hash.h File 24.67 KB 0644
mmu.h File 4.66 KB 0644
pgalloc.h File 6.12 KB 0644
pgtable-4k.h File 1.32 KB 0644
pgtable-64k.h File 1.55 KB 0644
pgtable.h File 35.48 KB 0644
radix-4k.h File 391 B 0644
radix-64k.h File 395 B 0644
radix.h File 8.92 KB 0644
slice.h File 841 B 0644
tlbflush-hash.h File 2.97 KB 0644
tlbflush-radix.h File 2.25 KB 0644
tlbflush.h File 3.06 KB 0644