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Wed, 1 Apr 2026 02:09:17 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 4958) id 7C95FE0ADF; Wed, 01 Apr 2026 04:09:17 +0200 (CEST) From: Eric Farman To: Christian Borntraeger , Hendrik Brueckner , Janosch Frank , Claudio Imbrenda , David Hildenbrand Cc: Paolo Bonzini , Jonathan Corbet , Shuah Khan , kvm@vger.kernel.org, linux-s390@vger.kernel.org, Eric Farman Subject: [PATCH v1 0/4] KVM: s390: Permit ESA mode guests in VSIE Date: Wed, 1 Apr 2026 04:09:11 +0200 Message-ID: <20260401020915.1339228-1-farman@linux.ibm.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDAxMDAxMCBTYWx0ZWRfX52wlAmEuscaa zEjsqoog9DjzUC8XXi8f+20AjOlTPlUo+ZJmgO0aSXBYSKDn2IrHn41qrGkSBCouJtOKBcaarc8 htobMQf/uBnKDnoukfU12WQb3QAiSM+qtEAVdVJCrQ+skPO1AAYZmyGIJtubb4kMulTwYiAIpV5 WUZ7SBFVthtuHztmetj6WeXIg9NyimMDgY4B+xbqix+kPEcKflexv4gW8MPweVcGgKf1/UNfJ4J uhD3jkBAuRNul14YKdPum798bN59HB1YC/b2/GlKlwHqcxwqJRZDkBdmRnKml1eB+gO+erk3XYK XuLP2h/S0JsGOIW7p+JUxA/Q2J0b0nNVFncijoebCOruQhsx/WUuCe7Ko/J1LTH/b5XqzG/J3/t AVWDzfH/6JCLXQpd/NJv8krG2tifXneFXiv/CZosrJ6QNS7N+rZSwpdFVyEpS8kPszPUGaS4mRe diNIZRVutTQr553jkqw== X-Authority-Analysis: v=2.4 cv=QKZlhwLL c=1 sm=1 tr=0 ts=69cc7e52 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=Sz-QV6t1jvEebQ1jh4YA:9 X-Proofpoint-GUID: Z2ze529lH3UX93X32THcI-klTHgmuLxf X-Proofpoint-ORIG-GUID: Z2ze529lH3UX93X32THcI-klTHgmuLxf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-01_01,2026-03-31_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 adultscore=0 impostorscore=0 clxscore=1011 spamscore=0 bulkscore=0 priorityscore=1501 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604010010 Hi Hendrik, Janosch, et al, Attached is a small series to allow ESA-mode guests in s390 VSIE. It continues to expect that z/Architecture is the default, unless opted in by userspace. I look forward to your thoughts; thanks! Eric Farman (3): KVM: s390: vsie: Allow non-zarch guests KVM: s390: vsie: Disable some bits when in ESA mode KVM: s390: vsie: Accommodate ESA prefix pages Hendrik Brueckner (1): KVM: s390: Add KVM capability for ESA mode guests Documentation/virt/kvm/api.rst | 8 +++++++ arch/s390/include/asm/kvm_host.h | 1 + arch/s390/include/asm/kvm_host_types.h | 3 +-- arch/s390/kvm/kvm-s390.c | 6 ++++++ arch/s390/kvm/kvm-s390.h | 5 ++++- arch/s390/kvm/vsie.c | 29 ++++++++++++++++++++++---- include/uapi/linux/kvm.h | 1 + 7 files changed, 46 insertions(+), 7 deletions(-) --=20 2.51.0