arch/arm64/include/asm/mte-def.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2020 ARM Ltd.
   4  */
   5 #ifndef __ASM_MTE_DEF_H
   6 #define __ASM_MTE_DEF_H
   7
   8 #define MTE_GRANULE_SIZE        UL(16)
   9 #define MTE_GRANULE_MASK        (~(MTE_GRANULE_SIZE - 1))
  10 #define MTE_GRANULES_PER_PAGE   (PAGE_SIZE / MTE_GRANULE_SIZE)
  11 #define MTE_TAG_SHIFT           56
  12 #define MTE_TAG_SIZE            4
  13 #define MTE_TAG_MASK            GENMASK((MTE_TAG_SHIFT + (MTE_TAG_SIZE - 1)), MTE_TAG_SHIFT)
  14 #define MTE_PAGE_TAG_STORAGE    (MTE_GRANULES_PER_PAGE * MTE_TAG_SIZE / 8)
  15
  16 #define __MTE_PREAMBLE          ARM64_ASM_PREAMBLE ".arch_extension memtag\n"
  17
  18 #endif /* __ASM_MTE_DEF_H  */