diff options
Diffstat (limited to 'arch/arm/include/asm/pgalloc.h')
| -rw-r--r-- | arch/arm/include/asm/pgalloc.h | 69 |
1 files changed, 22 insertions, 47 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h index 17ab72f0cc4e..a17f01235c29 100644 --- a/arch/arm/include/asm/pgalloc.h +++ b/arch/arm/include/asm/pgalloc.h @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm/include/asm/pgalloc.h * * Copyright (C) 2000-2001 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef _ASMARM_PGALLOC_H #define _ASMARM_PGALLOC_H @@ -18,25 +15,13 @@ #include <asm/cacheflush.h> #include <asm/tlbflush.h> -#define check_pgt_cache() do { } while (0) - #ifdef CONFIG_MMU #define _PAGE_USER_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_USER)) #define _PAGE_KERNEL_TABLE (PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_KERNEL)) #ifdef CONFIG_ARM_LPAE - -static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) -{ - return (pmd_t *)get_zeroed_page(GFP_KERNEL); -} - -static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -{ - BUG_ON((unsigned long)pmd & (PAGE_SIZE-1)); - free_page((unsigned long)pmd); -} +#define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t)) static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { @@ -44,21 +29,24 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) } #else /* !CONFIG_ARM_LPAE */ +#define PGD_SIZE (PAGE_SIZE << 2) /* * Since we have only two-level page tables, these are trivial */ #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) #define pmd_free(mm, pmd) do { } while (0) +#ifdef CONFIG_KASAN +/* The KASan core unconditionally calls pud_populate() on all architectures */ +#define pud_populate(mm,pmd,pte) do { } while (0) +#else #define pud_populate(mm,pmd,pte) BUG() - +#endif #endif /* CONFIG_ARM_LPAE */ extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); -#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO) - static inline void clean_pte_table(pte_t *pte) { clean_dcache_area(pte + PTE_HWTABLE_PTRS, PTE_HWTABLE_SIZE); @@ -80,54 +68,42 @@ static inline void clean_pte_table(pte_t *pte) * | h/w pt 1 | * +------------+ */ + +#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL +#define __HAVE_ARCH_PTE_ALLOC_ONE +#define __HAVE_ARCH_PGD_FREE +#include <asm-generic/pgalloc.h> + static inline pte_t * pte_alloc_one_kernel(struct mm_struct *mm) { - pte_t *pte; + pte_t *pte = __pte_alloc_one_kernel(mm); - pte = (pte_t *)__get_free_page(PGALLOC_GFP); if (pte) clean_pte_table(pte); return pte; } +#ifdef CONFIG_HIGHPTE +#define PGTABLE_HIGHMEM __GFP_HIGHMEM +#else +#define PGTABLE_HIGHMEM 0 +#endif + static inline pgtable_t pte_alloc_one(struct mm_struct *mm) { struct page *pte; -#ifdef CONFIG_HIGHPTE - pte = alloc_pages(PGALLOC_GFP | __GFP_HIGHMEM, 0); -#else - pte = alloc_pages(PGALLOC_GFP, 0); -#endif + pte = __pte_alloc_one(mm, GFP_PGTABLE_USER | PGTABLE_HIGHMEM); if (!pte) return NULL; if (!PageHighMem(pte)) clean_pte_table(page_address(pte)); - if (!pgtable_page_ctor(pte)) { - __free_page(pte); - return NULL; - } return pte; } -/* - * Free one PTE table. - */ -static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) -{ - if (pte) - free_page((unsigned long)pte); -} - -static inline void pte_free(struct mm_struct *mm, pgtable_t pte) -{ - pgtable_page_dtor(pte); - __free_page(pte); -} - static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte, pmdval_t prot) { @@ -167,7 +143,6 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep) __pmd_populate(pmdp, page_to_phys(ptep), prot); } -#define pmd_pgtable(pmd) pmd_page(pmd) #endif /* CONFIG_MMU */ |