From 063e409dcc37a5834fe94342b3cbcfe17d094eed Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 2 Aug 2023 16:13:47 +0100 Subject: openrisc: implement the new page table range API Add PFN_PTE_SHIFT, update_mmu_cache_range() and flush_dcache_folio(). Change the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page to per-folio. Link: https://lkml.kernel.org/r/20230802151406.3735276-20-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Mike Rapoport (IBM) Cc: Jonas Bonn Cc: Stefan Kristiansson Cc: Stafford Horne Signed-off-by: Andrew Morton --- arch/openrisc/mm/cache.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'arch/openrisc/mm') diff --git a/arch/openrisc/mm/cache.c b/arch/openrisc/mm/cache.c index 534a52ec5e66..eb43b73f3855 100644 --- a/arch/openrisc/mm/cache.c +++ b/arch/openrisc/mm/cache.c @@ -43,15 +43,19 @@ void update_cache(struct vm_area_struct *vma, unsigned long address, pte_t *pte) { unsigned long pfn = pte_val(*pte) >> PAGE_SHIFT; - struct page *page = pfn_to_page(pfn); - int dirty = !test_and_set_bit(PG_dc_clean, &page->flags); + struct folio *folio = page_folio(pfn_to_page(pfn)); + int dirty = !test_and_set_bit(PG_dc_clean, &folio->flags); /* * Since icaches do not snoop for updated data on OpenRISC, we * must write back and invalidate any dirty pages manually. We * can skip data pages, since they will not end up in icaches. */ - if ((vma->vm_flags & VM_EXEC) && dirty) - sync_icache_dcache(page); + if ((vma->vm_flags & VM_EXEC) && dirty) { + unsigned int nr = folio_nr_pages(folio); + + while (nr--) + sync_icache_dcache(folio_page(folio, nr)); + } } -- cgit v1.2.3