Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64...

[linux-2.6-microblaze.git] / arch / arm64 / kernel / mte.c

diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
index bf526bd..57b30bc 100644 (file)
--- a/arch/arm64/kernel/mte.c
+++ b/arch/arm64/kernel/mte.c
@@ -77,6 +77,9 @@ void mte_sync_tags(pte_t old_pte, pte_t pte)
                        mte_sync_page_tags(page, old_pte, check_swap,
                                           pte_is_tagged);
        }
+
+       /* ensure the tags are visible before the PTE is set */
+       smp_wmb();
 }
 
 int memcmp_pages(struct page *page1, struct page *page2)