Viewing file: pgalloc.h (2.25 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Based on arch/arm/include/asm/pgalloc.h * * Copyright (C) 2000-2001 Russell King * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_PGALLOC_H #define __ASM_PGALLOC_H
#include <asm/pgtable-hwdef.h> #include <asm/processor.h> #include <asm/cacheflush.h> #include <asm/tlbflush.h>
#define __HAVE_ARCH_PGD_FREE #include <asm-generic/pgalloc.h>
#define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t))
#if CONFIG_PGTABLE_LEVELS > 2
static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot) { set_pud(pudp, __pud(__phys_to_pud_val(pmdp) | prot)); }
static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp) { pudval_t pudval = PUD_TYPE_TABLE;
pudval |= (mm == &init_mm) ? PUD_TABLE_UXN : PUD_TABLE_PXN; __pud_populate(pudp, __pa(pmdp), pudval); } #else static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot) { BUILD_BUG(); } #endif /* CONFIG_PGTABLE_LEVELS > 2 */
#if CONFIG_PGTABLE_LEVELS > 3
static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot) { set_p4d(p4dp, __p4d(__phys_to_p4d_val(pudp) | prot)); }
static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4dp, pud_t *pudp) { p4dval_t p4dval = P4D_TYPE_TABLE;
p4dval |= (mm == &init_mm) ? P4D_TABLE_UXN : P4D_TABLE_PXN; __p4d_populate(p4dp, __pa(pudp), p4dval); } #else static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot) { BUILD_BUG(); } #endif /* CONFIG_PGTABLE_LEVELS > 3 */
extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgdp);
static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t ptep, pmdval_t prot) { set_pmd(pmdp, __pmd(__phys_to_pmd_val(ptep) | prot)); }
/* * Populate the pmdp entry with a pointer to the pte. This pmd is part * of the mm address space. */ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep) { VM_BUG_ON(mm && mm != &init_mm); __pmd_populate(pmdp, __pa(ptep), PMD_TYPE_TABLE | PMD_TABLE_UXN); }
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep) { VM_BUG_ON(mm == &init_mm); __pmd_populate(pmdp, page_to_phys(ptep), PMD_TYPE_TABLE | PMD_TABLE_PXN); } #define pmd_pgtable(pmd) pmd_page(pmd)
#endif
|