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Thu, 30 Jul 2026 05:41:37 +0000 (GMT) Received: from Linuxdev.ibmuc.com (unknown [9.43.85.187]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 30 Jul 2026 05:41:37 +0000 (GMT) From: Madhavan Srinivasan To: Geoff Levand , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Geert Uytterhoeven , Paul Mackerras , MOKUNO Masakazu , Thorsten Blum Cc: stable@vger.kernel.org, Geoff Levand , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages() Date: Thu, 30 Jul 2026 11:11:36 +0530 Message-ID: <178538948395.1278583.8213797923163532794.b4-ty@linux.ibm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260711130931.740719-3-thorsten.blum@linux.dev> References: <20260711130931.740719-3-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: SZv8Z9hwvPsPhzrn_mTgndZOnQM9W773 X-Proofpoint-ORIG-GUID: 2dffHeDNnxgAaMRWEhZdI8H9_XSXN9ad X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMwMDAzMyBTYWx0ZWRfX9XO+BktGQgFa iymJ6sfCiSTyZd6azB0lymWRN+5q//SKOy0Z5BaKNCtpv8SBVH8ydRDBEjf1o1uWWfET953lBoF AWTjuxPbWvJ/2LepTcaBX7oais/LGUw= X-Authority-Analysis: v=2.4 cv=dYuwG3Xe c=1 sm=1 tr=0 ts=6a6ae419 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VwQbUJbxAAAA:8 a=IW7kSglj8ZqiZljJpVIA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMwMDAzMyBTYWx0ZWRfX7y9hP7rYLMDH ntBcXV8t9yVf2tbz8RJG5oSoLMtjORS0kqJTO23GAkjwq1EFyn4H2TXXWpqixyeV7oZGvTVMY/O oi39JAOPYUtxAfp69zJXvqQ9+VXJvw5zrVC1eNRmKV4yi/UtOambB+/8QiRdQ4VUvpVP7IRna2U Gkqzx41XR1JDMKCVPaxOdCPjinEvjaOmjBAP5kZFIZeLk6HvRY5HOkmTrceWkbnfBDhiTeMwnRe tLu2igwRZjTujAxncP+gKeW9iLyJFKfFuYDpjFGYvNZbP09/SeYpP9/FawRJ1JS3Ak4xfM5VOLB gjR+dTGSCifZULdSrIYVKBgaSBSLvN6MQPIvIdg79OZu58LdWvtVUy3wVjzqqeaM9GBgzDMYHGC aIZGWbzEfeMFOM5gKGfeucQtkOMgm36Vuo0W3t6k/VP1ZYc5bJFJUhSF5uCWe8Si8EPF2Y29h3n 8FZQDNykKPgwKAfzdDQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-30_01,2026-07-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 clxscore=1011 phishscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 bulkscore=0 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607300033 On Sat, 11 Jul 2026 15:09:32 +0200, Thorsten Blum wrote: > If lv1_put_iopte() fails in dma_ioc0_map_pages(), the error path > decrements iopage but keeps using the failed mapping's offset. As a > result, it repeatedly tries to invalidate the failed IOPTE slot and > leaves the already installed IOPTEs valid. > > Recompute offset and invalidate the installed IOPTEs instead. > > [...] Applied to powerpc/fixes. [1/1] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages() https://git.kernel.org/powerpc/c/0bb024f11d120abff3e8db9144a585b9d7fb8459 cheers