powerpc/64e: Fix wrong test in __ptep_test_and_clear_young()

[ Upstream commit 5ea0bba ] Commit 45201c8 ("powerpc/nohash: Remove hash related code from nohash headers.") replaced: if ((pte_val(*ptep) & (_PAGE_ACCESSED | _PAGE_HASHPTE)) == 0) return 0; By: if (pte_young(*ptep)) return 0; But it should be: if (!pte_young(*ptep)) return 0; Fix it. Fixes: 45201c8 ("powerpc/nohash: Remove hash related code from nohash headers.") Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://msgid.link/8bb7f06494e21adada724ede47a4c3d97e879d40.1695659959.git.christophe.leroy@csgroup.eu Signed-off-by: Sasha Levin <[email protected]>
viraniac · Oct 25, 2023 · ba4b377 · ba4b377
1 parent dadb86f
commit ba4b377
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -216,7 +216,7 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm,
 {
 	unsigned long old;
 
-	if (pte_young(*ptep))
+	if (!pte_young(*ptep))
 		return 0;
 	old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0);
 	return (old & _PAGE_ACCESSED) != 0;