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Mon, 23 Feb 2026 11:53:16 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id 42E52E0B66; Mon, 23 Feb 2026 12:53:16 +0100 (CET) From: Alexander Gordeev To: Pasha Tatashin , Andrew Morton Cc: linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org Subject: [PATCH 2/4] s390/pgtable: Use set_pmd_bit() to invalidate PMD entry Date: Mon, 23 Feb 2026 12:53:14 +0100 Message-ID: <0aa1229418fc85cd89975e61abeef421a22097be.1771845678.git.agordeev@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: DJdugSA8pf3un2SMyjkFtn6m3EEbpSPF X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjIzMDA5OSBTYWx0ZWRfX6VlxABNsYuyo LpLWehqxZkWz5ST1QDK3NffVHaXaHbm+YEYrYwryvg7KgVpJC6YezjMMvh+eCuwZIChQT/DP4vT fOoVRBE5VEFHKHFbPE9TrYA1LADNsa3rk4tRjSfBYOFoI+8gq6CQi4ty4EC6SSoF1uu5syUdEN8 y//Ke2RE6sWfyqcwh9YxUEOl0XkjM5/mVl4eWOAX5+tmMKLYmLrf0HpevD9H9T3AuSEfyk3GxBN MomQpkKawTBty5ZeI8IJfxUQYWrjExbzkEM6qhtXopgPbvZFG4uSHURQOCP6zCbaUQ/9g/9tt1v 34scLjD6Qfpet0dGGIqQD4Gz9Psn+7OGQtHe8MScQTRJozUEYGa2nFUND2Znc583gFKazYB0ERy 0IwtNIwteKE6KT3AliSVXOdpwf1s3JZr+x/GFrZM76vHHeioprzpM071IlHOGVgrRvu1H5pW4tB GRuOAvoIXJ87IS0Ab8A== X-Authority-Analysis: v=2.4 cv=eNceTXp1 c=1 sm=1 tr=0 ts=699c3faf cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=VnNF1IyMAAAA:8 a=Wwf5FGOAHR2iKIFYnxsA:9 X-Proofpoint-GUID: DJdugSA8pf3un2SMyjkFtn6m3EEbpSPF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-23_02,2026-02-20_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602230099 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260223_035326_594938_3BF1060E X-CRM114-Status: GOOD ( 13.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Commit 3a5a8d343e1c ("mm: fix race between __split_huge_pmd_locked() and GUP-fast") failed to follow the convention and used direct PMD entry modification instead of set_pmd_bit(). Reviewed-by: Gerald Schaefer Signed-off-by: Alexander Gordeev --- arch/s390/include/asm/pgtable.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgta= ble.h index 1c3c3be93be9..04ec9fee6498 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1744,10 +1744,10 @@ static inline pmd_t pmdp_huge_clear_flush(struct = vm_area_struct *vma, static inline pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmdp) { - pmd_t pmd; + pmd_t pmd =3D *pmdp; =20 - VM_WARN_ON_ONCE(!pmd_present(*pmdp)); - pmd =3D __pmd(pmd_val(*pmdp) | _SEGMENT_ENTRY_INVALID); + VM_WARN_ON_ONCE(!pmd_present(pmd)); + pmd =3D set_pmd_bit(pmd, __pgprot(_SEGMENT_ENTRY_INVALID)); return pmdp_xchg_direct(vma->vm_mm, addr, pmdp, pmd); } =20 --=20 2.51.0