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2c4541e24c
Make sure to initialize all VMAs properly, not only those which come from vm_area_cachep. Link: http://lkml.kernel.org/r/20180724121139.62570-3-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Based on arch/arm/include/asm/tlb.h
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*
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* Copyright (C) 2002 Russell King
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_TLB_H
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#define __ASM_TLB_H
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#include <linux/pagemap.h>
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#include <linux/swap.h>
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#ifdef CONFIG_HAVE_RCU_TABLE_FREE
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#define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry)
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static inline void __tlb_remove_table(void *_table)
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{
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free_page_and_swap_cache((struct page *)_table);
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}
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#else
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#define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry)
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#endif /* CONFIG_HAVE_RCU_TABLE_FREE */
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#include <asm-generic/tlb.h>
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static inline void tlb_flush(struct mmu_gather *tlb)
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{
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struct vm_area_struct vma;
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vma_init(&vma, tlb->mm);
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/*
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* The ASID allocator will either invalidate the ASID or mark
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* it as used.
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*/
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if (tlb->fullmm)
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return;
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/*
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* The intermediate page table levels are already handled by
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* the __(pte|pmd|pud)_free_tlb() functions, so last level
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* TLBI is sufficient here.
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*/
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__flush_tlb_range(&vma, tlb->start, tlb->end, true);
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}
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static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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pgtable_page_dtor(pte);
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tlb_remove_entry(tlb, pte);
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}
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#if CONFIG_PGTABLE_LEVELS > 2
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static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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tlb_remove_entry(tlb, virt_to_page(pmdp));
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}
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#endif
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#if CONFIG_PGTABLE_LEVELS > 3
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static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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tlb_remove_entry(tlb, virt_to_page(pudp));
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}
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#endif
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#endif
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