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Tue, 14 Jul 2026 11:39:52 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4fc2uy285g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 14 Jul 2026 11:39:52 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 66EBdmOl62456242 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 14 Jul 2026 11:39:48 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6C8202004D; Tue, 14 Jul 2026 11:39:48 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 199A220049; Tue, 14 Jul 2026 11:39:48 +0000 (GMT) Received: from li-d2cd37cc-2ca3-11b2-a85c-84ed3706e5a0.ibm.com (unknown [9.111.75.242]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 14 Jul 2026 11:39:48 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , Cornelia Huck , Eric Farman , Matthew Rosato Cc: David Hildenbrand , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Harald Freudenberger , Ilya Leoshkevich Subject: [PATCH 0/2] target/s390x: Make PRNO TRNG interruptible Date: Tue, 14 Jul 2026 13:34:49 +0200 Message-ID: <20260714113946.275122-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE0MDExNiBTYWx0ZWRfX50eTKoAiHh8l fGf8ZYdg6q1WPN4MaYsxc4wpPSdtI0PyxPE/1sffYdG80JVPiBiYYMfDDNkypNpU/kQcWCxkaQu l6pu00qgW7w9ekzm1+1wZ0D7TPT1+mY= X-Proofpoint-GUID: BqdOTIaYGRw8hzrHzarwlqF2wau69A9p X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE0MDExNiBTYWx0ZWRfX/QJuB16zDmtr cazJktvvyNaxY5LZJr3L3FFeZntuy1xUVqk1Be6zQjPixv52h3jod/ZsH/55U4C32v9dPsMU4Tp WtEe+CXNv5log4QIDYyqjRbcNeFeE8b1j8P85oNCWPAw+Lu16+8W+xinx0RrJeYfFtQz/hIoEx/ WZ4Dn3V2qyJ+pfAHAVqfqQ8QE9Sip8C9qTz+b1Cc+Oj9B2LtV7u6MWeP7787di3o1K6wwcrzOjN dSskQrj6ZweANqpCMIUcW5c3OQLDFkgsg57yamBeGLPIFOy7OyqiviSKUkeFBwp3WW7NMEvkKvb vdC3MEIEtpov8TL/096xA33NU8/HLi8ClYPwDHM8XTnbou64GHyGJGvk6uSZ8NHYAcCrTKC9Q2S LPRKjZRlwMYwU3IhrMm2/n1Qz9m3dqljS1EYBXchUlo6MuMiWrEDEKCDztYLczEywhUZGUBHN18 fy9TFZW/p4E0o1LM4Cg== X-Proofpoint-ORIG-GUID: BqdOTIaYGRw8hzrHzarwlqF2wau69A9p X-Authority-Analysis: v=2.4 cv=PvajqQM3 c=1 sm=1 tr=0 ts=6a562009 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=9M258467kB8nMN-SsRoA: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=2026-07-14_02,2026-07-10_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 bulkscore=0 impostorscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607140116 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi, Christian has reported that one can make a TCG guest stuck by running PRNO TRNG with a huge buffer. This series fixes this by making PRNO TRNG always end after generating 16KB. Patch 1 is the fix, patch 2 is the test. Cc: Harald, because this may conflict with the CPACF series. Best regards, Ilya Ilya Leoshkevich (2): target/s390x: Make PRNO TRNG interruptible tests/tcg/s390x: Test PRNO TRNG interruptibility target/s390x/tcg/crypto_helper.c | 25 +++++++++--- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/prno-trng.c | 67 ++++++++++++++++++++++++++++++++ 3 files changed, 87 insertions(+), 6 deletions(-) create mode 100644 tests/tcg/s390x/prno-trng.c -- 2.55.0