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Wed, 7 Oct 2026 11:41:58 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with SMTP; Wed, 7 Oct 2026 11:41:58 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id 8213B16096B; Wed, 07 Oct 2026 13:41:58 +0200 (CEST) From: Alexander Gordeev To: Gerald Schaefer , Heiko Carstens , Christian Borntraeger , Vasily Gorbik , Claudio Imbrenda , Andrey Ryabinin Cc: Muhammad Usama Anjum , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com Subject: [PATCH v8 04/15] mm: convert PTE table entries in ptep_get() Date: Wed, 7 Oct 2026 13:41:47 +0200 Message-ID: X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: pyMhgOO0v4VOCAydqbCm361HgIudXaK4 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA3MDA0NiBTYWx0ZWRfX746I6PsUZf6m 2KOHP1izwyd3Twp1WG5Gdqp9uWUpoxNGb9pNRaGXndxQN1kl11mP+OT06Xx+ZKhiJLN+jRYi/it EqpFmj+o8oGofctWkdhHka8gpsx+XpQ= X-Proofpoint-GUID: DPZO_1nAXLrxW5zj_E8Vg6VFQ0Zlpp4O X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA3MDA0NiBTYWx0ZWRfX+VVGuGhQD3aI kECgZ0qTFliNsk7gq2E3XP+in4f+/4fs6hwB2TLkjYo3t813wgwjW+G5jlRb0uLr/vsunCg+W0k h7VIW85e10pokcOICbP0ffr+fIrAbyzWBiAkaEeArpEODJgfrYajMps2ete9qvdD2uGBiBTrGcu hABd/wFU3rMlIxKXYMBQeJH0+1n4zqLuRA8ZOvedxXtXBLyVNu5flMqQgAXZaBJjda2EbYANQL9 2Ub1tMqsUxMeYnX1cEkDROM577lmvqO6vdrM1vJp3nJDO2hrCKD8rKDeU5YQbyA3w6OhTLBIdWF d34AwHydekZaDoKi55fTpHbhft65m6M6TFrzLiVs539Vy1UprXOeGedgRBHB7D417NqLbxw3Ehu WvG4mCcG1g8UwIqkp+GhXcLuyO3nLQlfZlyfqSQb5OR30MFjcmZjKJotvCcn+n2eaUntwW81s3+ 3EmmoBrjn76SguQw5Aw== X-Authority-Analysis: v=2.4 cv=fM2sTpae c=1 sm=1 tr=0 ts=6ac6300c cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=7CQSdrXTAAAA:8 a=2R5SyWd6415lt-ZHj5AA:9 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-07_04,2026-10-06_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 malwarescore=0 clxscore=1015 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610070046 From: Muhammad Usama Anjum ptep_get() now accepts a pointer to hw_pte_t storage but must continue to return a software PTE value. Add __pte_from_hw for both generic hw_pte_t definitions. Read the hw_pte_t table element atomically before converting it to pte_t. Signed-off-by: Muhammad Usama Anjum --- include/linux/pgtable.h | 2 +- include/linux/pgtable_types.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index dad80d264aac..1768421755a9 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -493,7 +493,7 @@ static inline int pudp_set_access_flags(struct vm_are= a_struct *vma, #ifndef ptep_get static inline pte_t ptep_get(hw_pte_t *ptep) { - return READ_ONCE(*ptep); + return __pte_from_hw(READ_ONCE(*ptep)); } #endif =20 diff --git a/include/linux/pgtable_types.h b/include/linux/pgtable_types.= h index 07da05d375c2..d6c5a7548550 100644 --- a/include/linux/pgtable_types.h +++ b/include/linux/pgtable_types.h @@ -8,8 +8,10 @@ =20 #ifdef CONFIG_ARCH_HAS_HW_PTE_T typedef struct __hw_pte_t { pte_t __pte; } hw_pte_t; +#define __pte_from_hw(pte) ((pte).__pte) #else #define hw_pte_t pte_t +#define __pte_from_hw(pte) (pte) #endif =20 #endif /* !__ASSEMBLY__ */ --=20 2.53.0