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669eec68f6
Move the pfn_pte() definitions from the 2level and 4level files to the generic pgtable.h and delete the custom definition of mk_pte() so that we use the central definition. Link: https://lkml.kernel.org/r/20250402181709.2386022-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Zi Yan <ziy@nvidia.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: <x86@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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_4LEVEL_H
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#define __UM_PGTABLE_4LEVEL_H
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#include <asm-generic/pgtable-nop4d.h>
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/* PGDIR_SHIFT determines what a fourth-level page table entry can map */
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#define PGDIR_SHIFT 39
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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/* PUD_SHIFT determines the size of the area a third-level page table can
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* map
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*/
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#define PUD_SHIFT 30
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#define PUD_SIZE (1UL << PUD_SHIFT)
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#define PUD_MASK (~(PUD_SIZE-1))
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/* PMD_SHIFT determines the size of the area a second-level page table can
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* map
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*/
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#define PMD_SHIFT 21
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE-1))
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/*
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* entries per page directory level
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*/
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#define PTRS_PER_PTE 512
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#define PTRS_PER_PMD 512
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#define PTRS_PER_PUD 512
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#define PTRS_PER_PGD 512
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#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
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#define pte_ERROR(e) \
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printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \
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pte_val(e))
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#define pmd_ERROR(e) \
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printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
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pmd_val(e))
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#define pud_ERROR(e) \
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printk("%s:%d: bad pud %p(%016lx).\n", __FILE__, __LINE__, &(e), \
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pud_val(e))
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#define pgd_ERROR(e) \
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printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
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pgd_val(e))
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#define pud_none(x) (!(pud_val(x) & ~_PAGE_NEEDSYNC))
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#define pud_bad(x) ((pud_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
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#define pud_present(x) (pud_val(x) & _PAGE_PRESENT)
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#define pud_populate(mm, pud, pmd) \
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set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
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#define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
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#define p4d_none(x) (!(p4d_val(x) & ~_PAGE_NEEDSYNC))
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#define p4d_bad(x) ((p4d_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
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#define p4d_present(x) (p4d_val(x) & _PAGE_PRESENT)
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#define p4d_populate(mm, p4d, pud) \
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set_p4d(p4d, __p4d(_PAGE_TABLE + __pa(pud)))
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#define set_p4d(p4dptr, p4dval) (*(p4dptr) = (p4dval))
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static inline int pgd_needsync(pgd_t pgd)
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{
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return pgd_val(pgd) & _PAGE_NEEDSYNC;
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}
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static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEEDSYNC; }
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#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
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static inline void pud_clear (pud_t *pud)
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{
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set_pud(pud, __pud(_PAGE_NEEDSYNC));
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}
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static inline void p4d_clear (p4d_t *p4d)
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{
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set_p4d(p4d, __p4d(_PAGE_NEEDSYNC));
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}
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#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
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#define pud_pgtable(pud) ((pmd_t *) __va(pud_val(pud) & PAGE_MASK))
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#define p4d_page(p4d) phys_to_page(p4d_val(p4d) & PAGE_MASK)
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#define p4d_pgtable(p4d) ((pud_t *) __va(p4d_val(p4d) & PAGE_MASK))
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static inline unsigned long pte_pfn(pte_t pte)
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{
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return phys_to_pfn(pte_val(pte));
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}
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static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
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{
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return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
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}
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#endif
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