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Wed, 22 Jul 2026 17:06:22 +0000 (GMT) Received: from IBM-D32RQW3.ibm.com (unknown [9.61.253.249]) by smtpav05.wdc07v.mail.ibm.com (Postfix) with ESMTP; Wed, 22 Jul 2026 17:06:22 +0000 (GMT) From: Farhan Ali To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org Cc: alifm@linux.ibm.com, mjrosato@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com Subject: [PATCH v4 0/6] KVM s390x PCI fixes Date: Wed, 22 Jul 2026 10:06:15 -0700 Message-ID: <20260722170621.1686-1-alifm@linux.ibm.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: SjQ7VSxzI_uFDvan3LZxioM0gpxKAfaS X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIyMDE2NCBTYWx0ZWRfX2U8X0KDgKsC1 Bn/xvwHRkUuWr7UDtkh4hLEhK5uVOMDTe5eXsWUZNOlmG4TiiQn0svPOBg9HiTOWj8rp2XwMQf9 3i89zMasrLRWIRFm3sf0/lw2yyavBJY= X-Proofpoint-GUID: SjQ7VSxzI_uFDvan3LZxioM0gpxKAfaS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIyMDE2NCBTYWx0ZWRfXzJuzr9OL/M1+ yWHKJ3l/Q88qKUhoHiwLUtmgqIXy0etAdhbI75jx8ffHxpphW/kWsLWMr482a+/lTRg/dUI5sej yKCpFG9ZomYRJTRHxV60WyJYu6patIU50aKvZNp/KUkM6M1CT1qSuNeI98+A2apeK8LNhcoyuuA 1oHubLAmbU8qnDJMN6WrlQPRqafMy7WqBvdtB+YoUwXz8W8363PJcYBgd1H1sv6qb30TkOzpWx/ 6b3hJgSsuHaCfvgCh3kDyweT/kqdgSqnDUmvfC/qIe3TzFfs+h2MPGupulSn/6Ut1AU466P+L4f utvL0qz0Rd45MJm20i/V7d/GPvXbrIMQrUAI+4uTa71a46CY2qb5flp1Qi36Z4Sj43QGJNcLrAP 6glV3eQYbM2eXK9n6wah8nRAbJ+mFnyO9xx0j3+jNBn7f2T2E/Bg2vKiGndtP5JOxTOfJzdzV24 DAJgHQ2HIu58sizBCbg== X-Authority-Analysis: v=2.4 cv=K7AS2SWI c=1 sm=1 tr=0 ts=6a60f892 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=36iXiGq6ocEqfiKSoJkA:9 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=2026-07-22_04,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 spamscore=0 phishscore=0 malwarescore=0 adultscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607220164 Hi, This series attempts to fix some the pre-existing issues[1] found by sashiko. [1] https://lore.kernel.org/all/20260624063447.85DF51F000E9@smtp.kernel.org/ Thanks Farhan ChangeLog --------- v3: https://lore.kernel.org/all/20260720175819.1723-1-alifm@linux.ibm.com/ v3 -> v4 - Add validation checks for AISB/AIBV spanning more than a page. - Reject multiple ioctl call for the same device, if adapter interrupt forwarding is already enabled for the device. - Rebase on 7.2-rc4. v2: https://lore.kernel.org/all/20260716175241.1039-1-alifm@linux.ibm.com/ v2 -> v3 - Remove overwriting guest FIB since we don't use it for re-issue (patch 4). v1: https://lore.kernel.org/all/20260713172600.1284-1-alifm@linux.ibm.com/ v1 -> v2 - Drop fix handling AISB/AIBV spanning multiple pages. - Fix memory accounting functions for the case when interrupt forwarding is enabled by one process but disabled by a different process (patch 1). Farhan Ali (6): KVM: s390: pci: Reject adapter interrupt forwarding if already enabled KVM: s390: pci: Fix memory accounting for pinned/unpinned pages KVM: s390: pci: Fix missing error codes and memory unaccounting KVM: s390: pci: Fix NULL dereference on AIBV allocation failure KVM: s390: pci: Fix resource leak on IRQ registration failure KVM: s390: pci: Validate AIBV and AISB before pinning guest pages arch/s390/kvm/pci.c | 102 +++++++++++++++++++++++++++++++++++--------- arch/s390/kvm/pci.h | 2 + 2 files changed, 84 insertions(+), 20 deletions(-) -- 2.43.0