[PATCH v3 30/34] mm: Use flush_icache_pages() in do_set_pmd()

From: Matthew Wilcox (Oracle)
Date: Tue Feb 28 2023 - 16:38:49 EST


Push the iteration over each page down to the architectures (many
can flush the entire THP without iteration).

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
mm/memory.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index bfa3100ec5a3..69e844d5f75c 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4222,8 +4222,7 @@ 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)
--
2.39.1