/* * Based on arch/arm/include/asm/tlb.h * * Copyright (C) 2002 Russell King * Copyright (C) 2012 ARM Ltd. * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __ASM_TLB_H #define __ASM_TLB_H #include <linux/pagemap.h> #include <linux/swap.h> #ifdef [31mCONFIG_HAVE_RCU_TABLE_FREE[0m #define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry) static inline void __tlb_remove_table(void *_table) { free_page_and_swap_cache((struct page *)_table); } #else #define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry) #endif /* CONFIG_HAVE_RCU_TABLE_FREE */ #include <asm-generic/tlb.h> static inline void tlb_flush(struct mmu_gather *tlb) { struct vm_area_struct vma = { .vm_mm = tlb->mm, }; /* * The ASID allocator will either invalidate the ASID or mark * it as used. */ if (tlb->fullmm) return; /* * The intermediate page table levels are already handled by * the __(pte|pmd|pud)_free_tlb() functions, so last level * TLBI is sufficient here. */ __flush_tlb_range(&vma, tlb->start, tlb->end, true); } static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) { __flush_tlb_pgtable(tlb->mm, addr); pgtable_page_dtor(pte); tlb_remove_entry(tlb, pte); } #if [31mCONFIG_PGTABLE_LEVELS[0m > 2 static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) { __flush_tlb_pgtable(tlb->mm, addr); tlb_remove_entry(tlb, virt_to_page(pmdp)); } #endif #if [31mCONFIG_PGTABLE_LEVELS[0m > 3 static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp, unsigned long addr) { __flush_tlb_pgtable(tlb->mm, addr); tlb_remove_entry(tlb, virt_to_page(pudp)); } #endif #endif |