blob: 10af8b6fe322f28d21db8c1fa6b4b7f961109ee7 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/syscalls.h>
#include <linux/spinlock.h>
#include <asm/page.h>
#include <asm/cache.h>
#include <asm/cacheflush.h>
#include <asm/cachectl.h>
void flush_dcache_page(struct page *page)
struct address_space *mapping = page_mapping(page);
unsigned long addr;
if (mapping && !mapping_mapped(mapping)) {
set_bit(PG_arch_1, &(page)->flags);
* We could delay the flush for the !page_mapping case too. But that
* case is for exec env/arg pages and those are %99 certainly going to
* get faulted into the tlb (and thus flushed) anyways.
addr = (unsigned long) page_address(page);
dcache_wb_range(addr, addr + PAGE_SIZE);
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
pte_t *pte)
unsigned long addr;
struct page *page;
unsigned long pfn;
pfn = pte_pfn(*pte);
if (unlikely(!pfn_valid(pfn)))
page = pfn_to_page(pfn);
addr = (unsigned long) page_address(page);
if (vma->vm_flags & VM_EXEC ||
pages_do_alias(addr, address & PAGE_MASK))
clear_bit(PG_arch_1, &(page)->flags);