{"id":2215440,"url":"http://patchwork.ozlabs.org/api/covers/2215440/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260324-astfleie2-v2-0-13008712da00@linux.ibm.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260324-astfleie2-v2-0-13008712da00@linux.ibm.com>","list_archive_url":null,"date":"2026-03-24T15:43:43","name":"[v2,0/2] s390x/kvm: Add ASTFLE facility 2 for nested virtualization","submitter":{"id":92629,"url":"http://patchwork.ozlabs.org/api/people/92629/?format=json","name":"Christoph Schlameuss","email":"schlameuss@linux.ibm.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20260324-astfleie2-v2-0-13008712da00@linux.ibm.com/mbox/","series":[{"id":497308,"url":"http://patchwork.ozlabs.org/api/series/497308/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=497308","date":"2026-03-24T15:43:45","name":"s390x/kvm: Add ASTFLE facility 2 for nested virtualization","version":2,"mbox":"http://patchwork.ozlabs.org/series/497308/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2215440/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=tg3s6Yn4;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n :content-transfer-encoding:content-type:date:from:message-id\n :mime-version:subject:to; s=pp1; bh=JiND6mGiPvbE2LYKOKXLYrjLtSLL\n QoO6Xdn0gIx8CCY=; b=tg3s6Yn4Oa3yJ68E5f9V7KlD4kTaE/VBf2LP95IwNfDe\n 3guni/kTKQPcEgrSk8qkPRxSbkAVpcW1dKhsIrs07izaVoP4YmJgTKytVIVafYpv\n jU8yQX04Z2TFV7d/zpVnO/XcPJiDSelOwdSRvBE4lOvZjcoiiVkdR4SPmrMibKX4\n HoOmm0BEJIfGrRgJFJm2Xd5k0Nr6hV2U7z1qu3wejozpdO01nyDEUvEU4SsdDPzP\n 8n8sgPW83TAUUXfzC7aCPegnMuWtIAFOBf9mUN703njv5OcjPhhFm9bFXBGYVLs5\n 5H5qrCXLkbN6tb30y+aTxacIszCM0Rus//kqhRhmSA==","From":"Christoph Schlameuss ","Subject":"[PATCH v2 0/2] s390x/kvm: Add ASTFLE facility 2 for nested\n virtualization","Date":"Tue, 24 Mar 2026 16:43:43 +0100","Message-Id":"<20260324-astfleie2-v2-0-13008712da00@linux.ibm.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-B4-Tracking":"v=1; b=H4sIAAAAAAAC/03Myw6CMBCF4Vchs7akM14CrnwPwwLLVCaBlrRIM\n KTvbiUuXP4nJ98GkYNwhGuxQeBFoniXgw4FmL51T1bS5QbSdNGka9XG2Q4sTKo6M5vadjXhEfJ\n /Cmxl3a17k7uXOPvw3ukFv+tPQfxTFlSojG0R7YnIdtVtEPdaS3mMpfEjNCmlDzNihB+mAAAA","X-Change-ID":"20260209-astfleie2-85eec9fd9213","To":"qemu-s390x@nongnu.org","Cc":"qemu-devel@nongnu.org, Halil Pasic ,\n Christian Borntraeger ,\n Eric Farman ,\n Matthew Rosato ,\n Richard Henderson ,\n Ilya Leoshkevich , Thomas Huth ,\n \"Michael S. Tsirkin\" ,\n Cornelia Huck , Paolo Bonzini ,\n Hendrik Brueckner , kvm@vger.kernel.org,\n Christoph Schlameuss ,\n Nina Schoetterl-Glausch ","X-Mailer":"b4 0.14.2","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1825;\n i=schlameuss@linux.ibm.com; h=from:subject:message-id;\n bh=COzvXf95VgYEGFT3vkIvilIgEuwTrj6d18C4DXXyebQ=;\n b=owGbwMvMwCUmoqVx+bqN+mXG02pJDJmHNrre+3LAj5krjetWQu1N0dMFwu0S/QcPMZU9/HbkS\n uOfRT+ud5SyMIhxMciKKbJUi1vnVfW1Lp1z0PIazBxWJpAhDFycAjCR8GyGf1YhkQU9OaxdTA8X\n fNbZdVSjL04i4KC2xpZUeeXCMoPrOgz/owONZs6Z0rV107Ml6+qjldt9oo+KfzhrkMl6e8LT5R2\n JXAA=","X-Developer-Key":"i=schlameuss@linux.ibm.com; a=openpgp;\n fpr=0E34A68642574B2253AF4D31EEED6AB388551EC3","X-TM-AS-GCONF":"00","X-Proofpoint-ORIG-GUID":"DoZzYelRpbj0VMS9CnGpYd2PlKxbtea-","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwMzI0MDExOSBTYWx0ZWRfX7eOt/3jKOe2N\n Ie3h0tUC2cwuRS0jkYcEN/Hw3qa0jQGCvNXzUM5SXTkSOFpwClemCRqjuIaQHXlNo23AeljuC6J\n 1M/V7Are8pVRl2Bi3YeLttEo+mAJpnIbk+0S9iz4dgmTx4basFzAEFTRDTJpFHT4qaAxJeFKoRC\n utfnS7pRcEX7PVjrRFXBCKMRUMTl/ByK69Z5LQ3vrN7viVa5IizmRuG8bRjMXOvNpJNxYRFCPKn\n PMzfqAgqOU+y1VQAnOC9EuNBpAZKVz+RCJoia3sWCgy/g0G1H0tPcW8K/iCPmRcQ58u+3TV+GaC\n puE1BnUSSEEHaqxbhyMobehvnc/mr8CgJeKnXk9CwKegXCLSc9RwT+uD5eKUfUDPRH4gBdJkP/z\n akZaRPCyG7QvHbVcaaAi5PYSmij9guUyLJbCIqGYRI+X3LGwAmWJql3/1g0G5ehdYBohzv4r7ZI\n 5qapC53+SBEWCs1uPXQ==","X-Authority-Analysis":"v=2.4 cv=bLEb4f+Z c=1 sm=1 tr=0 ts=69c2b14c cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=69wJf7TsAAAA:8\n a=VnNF1IyMAAAA:8 a=KKAkSRfTAAAA:8 a=20KFwNOVAAAA:8 a=VwQbUJbxAAAA:8\n a=fVmZTmo3ZkCWnWwVhVYA:9 a=QEXdDO2ut3YA:10 a=Fg1AiH1G6rFz08G2ETeA:22\n a=cvBusfyB2V15izCimMoJ:22","X-Proofpoint-GUID":"DoZzYelRpbj0VMS9CnGpYd2PlKxbtea-","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-03-24_03,2026-03-23_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n spamscore=0 adultscore=0 clxscore=1015 phishscore=0 impostorscore=0\n malwarescore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0\n priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001\n definitions=main-2603240119","Received-SPF":"pass client-ip=148.163.156.1;\n envelope-from=schlameuss@linux.ibm.com; helo=mx0a-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,\n DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7,\n RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001,\n 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":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Update the kernel headers to get access to\nKVM_S390_VM_CPU_FEAT_ASTFLEIE2 and allow passing the feature through to\nguest on IBM z16 onwards.\n\nCc: qemu-devel@nongnu.org\nCc: Halil Pasic \nCc: Christian Borntraeger \nCc: Eric Farman \nCc: Matthew Rosato \nCc: Richard Henderson \nCc: Ilya Leoshkevich \nCc: Thomas Huth \nCc: Michael S. Tsirkin \nCc: Cornelia Huck \nCc: Paolo Bonzini \nCc: Hendrik Brueckner \nTo: qemu-s390x@nongnu.org\nCc: kvm@vger.kernel.org\n\nSigned-off-by: Christoph Schlameuss \n---\nChanges in v2:\n- Isolate the linux-header update into its own commit (thanks Thomas)\n- Correct naming of the feature (thanks Hendrik)\n- Add S390_FEAT_SIE_ASTFLEIE2 to full_GEN16_GA1 only as it depends on\n SIEF2 (thanks Christian)\n\n---\nChristoph Schlameuss (2):\n linux-headers: Update to Linux v7.x with KVM_S390_VM_CPU_FEAT_ASTFLEIE2\n s390x/kvm: Add ASTFLE facility 2 for nested virtualization\n\n hw/s390x/sclp.c | 2 ++\n include/hw/s390x/sclp.h | 4 +++-\n linux-headers/asm-s390/kvm.h | 1 +\n target/s390x/cpu_features.c | 3 +++\n target/s390x/cpu_features.h | 1 +\n target/s390x/cpu_features_def.h.inc | 3 +++\n target/s390x/cpu_models.c | 2 ++\n target/s390x/gen-features.c | 1 +\n target/s390x/kvm/kvm.c | 1 +\n 9 files changed, 17 insertions(+), 1 deletion(-)\n---\nbase-commit: fa4b2e31e649ba6fdb3eb2dd43952aad4a3bd675\nchange-id: 20260209-astfleie2-85eec9fd9213\n\nBest regards,"}