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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - arch/powerpc/include/asm/pgtable-ppc64-64k.h
1 #ifndef _ASM_POWERPC_PGTABLE_PPC64_64K_H
2 #define _ASM_POWERPC_PGTABLE_PPC64_64K_H
4 #include <asm-generic/pgtable-nopud.h>
7 #define PTE_INDEX_SIZE 8
8 #define PMD_INDEX_SIZE 10
9 #define PUD_INDEX_SIZE 0
10 #define PGD_INDEX_SIZE 12
13 #define PTE_TABLE_SIZE (sizeof(real_pte_t) << PTE_INDEX_SIZE)
14 #define PMD_TABLE_SIZE (sizeof(pmd_t) << PMD_INDEX_SIZE)
15 #define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
16 #endif /* __ASSEMBLY__ */
18 #define PTRS_PER_PTE (1 << PTE_INDEX_SIZE)
19 #define PTRS_PER_PMD (1 << PMD_INDEX_SIZE)
20 #define PTRS_PER_PGD (1 << PGD_INDEX_SIZE)
22 /* With 4k base page size, hugepage PTEs go at the PMD level */
23 #define MIN_HUGEPTE_SHIFT PAGE_SHIFT
25 /* PMD_SHIFT determines what a second-level page table entry can map */
26 #define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE)
27 #define PMD_SIZE (1UL << PMD_SHIFT)
28 #define PMD_MASK (~(PMD_SIZE-1))
30 /* PGDIR_SHIFT determines what a third-level page table entry can map */
31 #define PGDIR_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE)
32 #define PGDIR_SIZE (1UL << PGDIR_SHIFT)
33 #define PGDIR_MASK (~(PGDIR_SIZE-1))
35 /* Bits to mask out from a PMD to get to the PTE page */
36 /* PMDs point to PTE table fragments which are 4K aligned. */
37 #define PMD_MASKED_BITS 0xfff
38 /* Bits to mask out from a PGD/PUD to get to the PMD page */
39 #define PUD_MASKED_BITS 0x1ff
41 #define pgd_pte(pgd) (pud_pte(((pud_t){ pgd })))
42 #define pte_pgd(pte) ((pgd_t)pte_pud(pte))
44 #endif /* _ASM_POWERPC_PGTABLE_PPC64_64K_H */