From c7953db380b37baa68926aaa83d362969245a8d6 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 2 Aug 2023 16:14:01 +0100 Subject: [PATCH] mm: use flush_icache_pages() in do_set_pmd() Push the iteration over each page down to the architectures (many can flush the entire THP without iteration). Link: https://lkml.kernel.org/r/20230802151406.3735276-34-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Anshuman Khandual Signed-off-by: Andrew Morton --- mm/memory.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index f4e38754ae7d..31b6bc790b2b 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4268,7 +4268,6 @@ vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page) bool write = vmf->flags & FAULT_FLAG_WRITE; unsigned long haddr = vmf->address & HPAGE_PMD_MASK; pmd_t entry; - int i; vm_fault_t ret = VM_FAULT_FALLBACK; if (!transhuge_vma_suitable(vma, haddr)) @@ -4301,8 +4300,7 @@ vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page) if (unlikely(!pmd_none(*vmf->pmd))) goto out; - for (i = 0; i < HPAGE_PMD_NR; i++) - flush_icache_page(vma, page + i); + flush_icache_pages(vma, page, HPAGE_PMD_NR); entry = mk_huge_pmd(page, vma->vm_page_prot); if (write)