From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm64/include/asm/tlb.h | 74 +++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 kernel/arch/arm64/include/asm/tlb.h (limited to 'kernel/arch/arm64/include/asm/tlb.h') diff --git a/kernel/arch/arm64/include/asm/tlb.h b/kernel/arch/arm64/include/asm/tlb.h new file mode 100644 index 000000000..3a0242c7e --- /dev/null +++ b/kernel/arch/arm64/include/asm/tlb.h @@ -0,0 +1,74 @@ +/* + * 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 . + */ +#ifndef __ASM_TLB_H +#define __ASM_TLB_H + +#include +#include + +#ifdef CONFIG_HAVE_RCU_TABLE_FREE + +#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 + +static inline void tlb_flush(struct mmu_gather *tlb) +{ + if (tlb->fullmm) { + flush_tlb_mm(tlb->mm); + } else { + struct vm_area_struct vma = { .vm_mm = tlb->mm, }; + flush_tlb_range(&vma, tlb->start, tlb->end); + } +} + +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 CONFIG_PGTABLE_LEVELS > 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 CONFIG_PGTABLE_LEVELS > 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 -- cgit 1.2.3-korg