2 * Based on arch/arm/include/asm/tlb.h
4 * Copyright (C) 2002 Russell King
5 * Copyright (C) 2012 ARM Ltd.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <linux/pagemap.h>
23 #include <linux/swap.h>
25 static inline void __tlb_remove_table(void *_table)
27 free_page_and_swap_cache((struct page *)_table);
30 static void tlb_flush(struct mmu_gather *tlb);
32 #include <asm-generic/tlb.h>
34 static inline void tlb_flush(struct mmu_gather *tlb)
36 struct vm_area_struct vma = TLB_FLUSH_VMA(tlb->mm, 0);
37 bool last_level = !tlb->freed_tables;
38 unsigned long stride = tlb_get_unmap_size(tlb);
41 * If we're tearing down the address space then we only care about
42 * invalidating the walk-cache, since the ASID allocator won't
43 * reallocate our ASID without invalidating the entire TLB.
47 flush_tlb_mm(tlb->mm);
51 __flush_tlb_range(&vma, tlb->start, tlb->end, stride, last_level);
54 static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
57 pgtable_page_dtor(pte);
58 tlb_remove_table(tlb, pte);
61 #if CONFIG_PGTABLE_LEVELS > 2
62 static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
65 tlb_remove_table(tlb, virt_to_page(pmdp));
69 #if CONFIG_PGTABLE_LEVELS > 3
70 static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
73 tlb_remove_table(tlb, virt_to_page(pudp));