1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IA64_PGALLOC_H 3 #define _ASM_IA64_PGALLOC_H 4 5 /* 6 * This file contains the functions and defines necessary to allocate 7 * page tables. 8 * 9 * This hopefully works with any (fixed) ia-64 page-size, as defined 10 * in <asm/page.h> (currently 8192). 11 * 12 * Copyright (C) 1998-2001 Hewlett-Packard Co 13 * David Mosberger-Tang <davidm@hpl.hp.com> 14 * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com> 15 */ 16 17 18 #include <linux/compiler.h> 19 #include <linux/mm.h> 20 #include <linux/page-flags.h> 21 #include <linux/threads.h> 22 23 #include <asm-generic/pgalloc.h> 24 25 #include <asm/mmu_context.h> 26 27 static inline pgd_t *pgd_alloc(struct mm_struct *mm) 28 { 29 return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO); 30 } 31 32 #if CONFIG_PGTABLE_LEVELS == 4 33 static inline void 34 p4d_populate(struct mm_struct *mm, p4d_t * p4d_entry, pud_t * pud) 35 { 36 p4d_val(*p4d_entry) = __pa(pud); 37 } 38 39 #define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud) 40 #endif /* CONFIG_PGTABLE_LEVELS == 4 */ 41 42 static inline void 43 pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) 44 { 45 pud_val(*pud_entry) = __pa(pmd); 46 } 47 48 #define __pmd_free_tlb(tlb, pmd, address) pmd_free((tlb)->mm, pmd) 49 50 static inline void 51 pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte) 52 { 53 pmd_val(*pmd_entry) = page_to_phys(pte); 54 } 55 #define pmd_pgtable(pmd) pmd_page(pmd) 56 57 static inline void 58 pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte) 59 { 60 pmd_val(*pmd_entry) = __pa(pte); 61 } 62 63 #define __pte_free_tlb(tlb, pte, address) pte_free((tlb)->mm, pte) 64 65 #endif /* _ASM_IA64_PGALLOC_H */ 66