From: Alexander Gordeev <agordeev@linux.ibm.com>
To: Vasily Gorbik <gor@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] s390/maccess: use proper PTE accessors for copying old memory
Date: Mon, 20 Jul 2026 16:47:34 +0200 [thread overview]
Message-ID: <20260720144734.1003497-1-agordeev@linux.ibm.com> (raw)
Follow the pattern established by commit c33c794828f2 ("mm:
ptep_get() conversion") and use proper PTE accessors instead
of a direct pointer dereference in memcpy_real_iter().
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
---
arch/s390/mm/maccess.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index cfd219fe495c..f39968dd8063 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -96,7 +96,7 @@ size_t memcpy_real_iter(struct iov_iter *iter, unsigned long src, size_t count)
pte = mk_pte_phys(phys, PAGE_KERNEL_RO);
mutex_lock(&memcpy_real_mutex);
- if (pte_val(pte) != pte_val(*memcpy_real_ptep)) {
+ if (pte_val(pte) != pte_val(ptep_get(memcpy_real_ptep))) {
__ptep_ipte(__memcpy_real_area, memcpy_real_ptep, 0, 0, IPTE_GLOBAL);
set_pte(memcpy_real_ptep, pte);
}
--
2.53.0
next reply other threads:[~2026-07-20 14:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-20 14:47 Alexander Gordeev [this message]
2026-07-20 14:51 ` [PATCH] s390/maccess: use proper PTE accessors for copying old memory sashiko-bot
2026-07-21 9:14 ` Heiko Carstens
2026-07-21 10:28 ` Vasily Gorbik
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