pgtable-ppc64-64k.h

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#ifndef _ASM_POWERPC_PGTABLE_PPC64_64K_H
#define _ASM_POWERPC_PGTABLE_PPC64_64K_H

#include <asm-generic/pgtable-nopud.h>


#define PTE_INDEX_SIZE  12
#define PMD_INDEX_SIZE  12
#define PUD_INDEX_SIZE  0
#define PGD_INDEX_SIZE  6

#ifndef __ASSEMBLY__
#define PTE_TABLE_SIZE  (sizeof(real_pte_t) << PTE_INDEX_SIZE)
#define PMD_TABLE_SIZE  (sizeof(pmd_t) << PMD_INDEX_SIZE)
#define PGD_TABLE_SIZE  (sizeof(pgd_t) << PGD_INDEX_SIZE)
#endif  /* __ASSEMBLY__ */

#define PTRS_PER_PTE    (1 << PTE_INDEX_SIZE)
#define PTRS_PER_PMD    (1 << PMD_INDEX_SIZE)
#define PTRS_PER_PGD    (1 << PGD_INDEX_SIZE)

/* With 4k base page size, hugepage PTEs go at the PMD level */
#define MIN_HUGEPTE_SHIFT   PAGE_SHIFT

/* PMD_SHIFT determines what a second-level page table entry can map */
#define PMD_SHIFT   (PAGE_SHIFT + PTE_INDEX_SIZE)
#define PMD_SIZE    (1UL << PMD_SHIFT)
#define PMD_MASK    (~(PMD_SIZE-1))

/* PGDIR_SHIFT determines what a third-level page table entry can map */
#define PGDIR_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE)
#define PGDIR_SIZE  (1UL << PGDIR_SHIFT)
#define PGDIR_MASK  (~(PGDIR_SIZE-1))

/* Bits to mask out from a PMD to get to the PTE page */
#define PMD_MASKED_BITS     0x1ff
/* Bits to mask out from a PGD/PUD to get to the PMD page */
#define PUD_MASKED_BITS     0x1ff

#endif /* _ASM_POWERPC_PGTABLE_PPC64_64K_H */