diff options
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/cache.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index f7b91d3a371d..7e3ea7766822 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -119,25 +119,36 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr) EXPORT_SYMBOL(__flush_anon_page); -void __update_cache(struct vm_area_struct *vma, unsigned long address, - pte_t pte) +static void mips_flush_dcache_from_pte(pte_t pteval, unsigned long address) { struct page *page; - unsigned long pfn, addr; - int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc; + unsigned long pfn = pte_pfn(pteval); - pfn = pte_pfn(pte); if (unlikely(!pfn_valid(pfn))) return; + page = pfn_to_page(pfn); if (page_mapping(page) && Page_dcache_dirty(page)) { - addr = (unsigned long) page_address(page); - if (exec || pages_do_alias(addr, address & PAGE_MASK)) - flush_data_cache_page(addr); + unsigned long page_addr = (unsigned long) page_address(page); + + if (!cpu_has_ic_fills_f_dc || + pages_do_alias(page_addr, address & PAGE_MASK)) + flush_data_cache_page(page_addr); ClearPageDcacheDirty(page); } } +void set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pteval) +{ + if (cpu_has_dc_aliases || !cpu_has_ic_fills_f_dc) { + if (pte_present(pteval)) + mips_flush_dcache_from_pte(pteval, addr); + } + + set_pte(ptep, pteval); +} + unsigned long _page_cachable_default; EXPORT_SYMBOL(_page_cachable_default); |