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Tue, 3 Mar 2026 13:54:03 +0000 (GMT) From: Janosch Frank To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, mjrosato@linux.ibm.com, freimuth@linux.ibm.com, imbrenda@linux.ibm.com, borntraeger@linux.ibm.com Subject: [PATCH v2 0/2] KVM: s390: Limit adapter indicator access to page Date: Tue, 3 Mar 2026 13:46:33 +0000 Message-ID: <20260303135250.3665-1-frankja@linux.ibm.com> X-Mailer: git-send-email 2.51.0 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-GUID: QSashC0xx1YQ7q4RstNjz2i5SjrEsFV2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDEwOCBTYWx0ZWRfX+ouGZPaHEYod 6ImLCVka5CyMlFo1Gc06sbLckemRZUvo92IRazsfeYmoY7EYdvuHWAE2/U1WPmmzoznqCgxoF+Z 8dQwc3PDGUvx9RjGHHi85uHpgdju9iSzm4NYARVoxITMU0OpQh/3Hv0zq0Qq1tNYURyw2s6lakH k4q3Bb/0/p57TqlhuI3bkIz4ecmmmWKmBaEh4fXfFbBr1MycnYjwp684GMetZZyqICmSiuKD6KN NiEu7CcLbYsCDuXdGIbL8GqQFzzfjbzNHnWO7r+6POGkg1SUsSH1TCEeGkwG0s9ZQ0T4mkzpIKr SEWALkVc1ePf3vFVxeLJZki0c6uBLHzMzG8YMAwmJQkp9dfX7Ok+nINiQxm9M4VPvmUPr4Y7kpP gPuszDJpqehKJSTleOWHxZmyy/i+hLjBPLba76eNsY9BHaGmpAWUmfG0DUmTpsRIKIigzKo+2/1 qDA8kt2c77rdW6mwamw== X-Authority-Analysis: v=2.4 cv=H7DWAuYi c=1 sm=1 tr=0 ts=69a6e800 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=8hHfqOmpiw9s73ohtJkA:9 a=zZCYzV9kfG8A:10 X-Proofpoint-ORIG-GUID: QSashC0xx1YQ7q4RstNjz2i5SjrEsFV2 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=2026-03-02_05,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 clxscore=1015 priorityscore=1501 adultscore=0 bulkscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030108 We currently check the address of the indicator fields but not the sum of address and offset. This patch remedies that problem and limits the address + offset combination to a single page. The selftest is very rudimentary but it's a start. v2: Reworked KVM limit check. Changed good-case test to subtract 4 bits instead of 8. That should ensure that we catch the error I made in v1. Janosch Frank (2): KVM: s390: Limit adapter indicator access to mapped page KVM: s390: selftests: Add IRQ routing address offset tests arch/s390/kvm/interrupt.c | 12 +++ tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/s390/irq_routing.c | 75 +++++++++++++++++++ 3 files changed, 88 insertions(+) create mode 100644 tools/testing/selftests/kvm/s390/irq_routing.c -- 2.51.0