mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 11:51:27 +00:00
caab277b1d
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Based on arch/arm/include/asm/tlb.h
|
|
*
|
|
* Copyright (C) 2002 Russell King
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*/
|
|
#ifndef __ASM_TLB_H
|
|
#define __ASM_TLB_H
|
|
|
|
#include <linux/pagemap.h>
|
|
#include <linux/swap.h>
|
|
|
|
static inline void __tlb_remove_table(void *_table)
|
|
{
|
|
free_page_and_swap_cache((struct page *)_table);
|
|
}
|
|
|
|
#define tlb_flush tlb_flush
|
|
static void tlb_flush(struct mmu_gather *tlb);
|
|
|
|
#include <asm-generic/tlb.h>
|
|
|
|
static inline void tlb_flush(struct mmu_gather *tlb)
|
|
{
|
|
struct vm_area_struct vma = TLB_FLUSH_VMA(tlb->mm, 0);
|
|
bool last_level = !tlb->freed_tables;
|
|
unsigned long stride = tlb_get_unmap_size(tlb);
|
|
|
|
/*
|
|
* If we're tearing down the address space then we only care about
|
|
* invalidating the walk-cache, since the ASID allocator won't
|
|
* reallocate our ASID without invalidating the entire TLB.
|
|
*/
|
|
if (tlb->fullmm) {
|
|
if (!last_level)
|
|
flush_tlb_mm(tlb->mm);
|
|
return;
|
|
}
|
|
|
|
__flush_tlb_range(&vma, tlb->start, tlb->end, stride, last_level);
|
|
}
|
|
|
|
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
|
|
unsigned long addr)
|
|
{
|
|
pgtable_page_dtor(pte);
|
|
tlb_remove_table(tlb, pte);
|
|
}
|
|
|
|
#if CONFIG_PGTABLE_LEVELS > 2
|
|
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
|
|
unsigned long addr)
|
|
{
|
|
struct page *page = virt_to_page(pmdp);
|
|
|
|
pgtable_pmd_page_dtor(page);
|
|
tlb_remove_table(tlb, page);
|
|
}
|
|
#endif
|
|
|
|
#if CONFIG_PGTABLE_LEVELS > 3
|
|
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
|
|
unsigned long addr)
|
|
{
|
|
tlb_remove_table(tlb, virt_to_page(pudp));
|
|
}
|
|
#endif
|
|
|
|
#endif
|