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authorTakashi Iwai <tiwai@suse.de>2025-12-01 16:25:31 +0100
committerTakashi Iwai <tiwai@suse.de>2025-12-01 16:25:31 +0100
commit72987d2ddc7e4d883d23be87eb858a003b81e2e0 (patch)
tree9d7120886e71d3ec864f8967e3f25c7bcae6bcd9 /arch/arm64/mm/fault.c
parentb72a6ddf6af225957d4b36f858d2a67b2e31fab6 (diff)
parent324f3e03e8a85931ce0880654e3c3eb38b0f0bba (diff)
Merge branch 'for-linus' into for-next
Pull remaining 6.18-devel changes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'arch/arm64/mm/fault.c')
-rw-r--r--arch/arm64/mm/fault.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index d816ff44faff..125dfa6c613b 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -969,6 +969,16 @@ struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
void tag_clear_highpage(struct page *page)
{
+ /*
+ * Check if MTE is supported and fall back to clear_highpage().
+ * get_huge_zero_folio() unconditionally passes __GFP_ZEROTAGS and
+ * post_alloc_hook() will invoke tag_clear_highpage().
+ */
+ if (!system_supports_mte()) {
+ clear_highpage(page);
+ return;
+ }
+
/* Newly allocated page, shouldn't have been tagged yet */
WARN_ON_ONCE(!try_page_mte_tagging(page));
mte_zero_clear_page_tags(page_address(page));