arch/powerpc/include/asm/book3s/64/radix-4k.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_POWERPC_PGTABLE_RADIX_4K_H
   3 #define _ASM_POWERPC_PGTABLE_RADIX_4K_H
   4
   5 /*
   6  * For 4K page size supported index is 13/9/9/9
   7  */
   8 #define RADIX_PTE_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x    4K =   2MB
   9 #define RADIX_PMD_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x   2MB =   1GB
  10 #define RADIX_PUD_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x   1GB = 512GB
  11 #define RADIX_PGD_INDEX_SIZE  13  // size: 8B << 13 = 64KB, maps 2^13 x 512GB =   4PB
  12
  13 /*
  14  * One fragment per per page
  15  */
  16 #define RADIX_PTE_FRAG_SIZE_SHIFT  (RADIX_PTE_INDEX_SIZE + 3)
  17 #define RADIX_PTE_FRAG_NR       (PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT)
  18
  19 #define RADIX_PMD_FRAG_SIZE_SHIFT  (RADIX_PMD_INDEX_SIZE + 3)
  20 #define RADIX_PMD_FRAG_NR       (PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT)
  21
  22 #endif /* _ASM_POWERPC_PGTABLE_RADIX_4K_H */