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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 ARM Ltd.
*/
#ifndef __ASM_MTE_H
#define __ASM_MTE_H
#ifndef __ASSEMBLY__
#include <linux/page-flags.h>
#include <asm/pgtable-types.h>
void mte_clear_page_tags(void *addr);
#ifdef CONFIG_ARM64_MTE
/* track which pages have valid allocation tags */
#define PG_mte_tagged PG_arch_2
void mte_sync_tags(pte_t *ptep, pte_t pte);
void flush_mte_state(void);
#else
/* unused if !CONFIG_ARM64_MTE, silence the compiler */
#define PG_mte_tagged 0
static inline void mte_sync_tags(pte_t *ptep, pte_t pte)
{
}
static inline void flush_mte_state(void)
{
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ASM_MTE_H */
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