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43 lines
1.3 KiB
43 lines
1.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2000, 2001, 2002 Jeff Dike ([email protected]) |
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* Copyright 2003 PathScale, Inc. |
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* Derived from include/asm-i386/pgtable.h |
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*/ |
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#ifndef __UM_PGTABLE_2LEVEL_H |
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#define __UM_PGTABLE_2LEVEL_H |
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#include <asm-generic/pgtable-nopmd.h> |
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/* PGDIR_SHIFT determines what a third-level page table entry can map */ |
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#define PGDIR_SHIFT 22 |
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT) |
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#define PGDIR_MASK (~(PGDIR_SIZE-1)) |
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/* |
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* entries per page directory level: the i386 is two-level, so |
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* we don't really have any PMD directory physically. |
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*/ |
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#define PTRS_PER_PTE 1024 |
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#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE) |
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#define PTRS_PER_PGD 1024 |
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#define pte_ERROR(e) \ |
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printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \ |
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pte_val(e)) |
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#define pgd_ERROR(e) \ |
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printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), \ |
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pgd_val(e)) |
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static inline int pgd_newpage(pgd_t pgd) { return 0; } |
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static inline void pgd_mkuptodate(pgd_t pgd) { } |
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#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval)) |
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#define pte_pfn(x) phys_to_pfn(pte_val(x)) |
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#define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot)) |
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#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot)) |
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#endif
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