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Tue, 19 May 2026 15:01:14 +0000 (GMT) Received: from p-imbrenda.ibmuc.com (unknown [9.111.4.60]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 19 May 2026 15:01:14 +0000 (GMT) From: Claudio Imbrenda To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, david@kernel.org, seiden@linux.ibm.com, nrb@linux.ibm.com, schlameuss@linux.ibm.com, gra@linux.ibm.com Subject: [PATCH v3 0/5] KVM: s390: some vSIE and UCONTROL fixes Date: Tue, 19 May 2026 17:01:09 +0200 Message-ID: <20260519150114.264309-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE5MDE0NSBTYWx0ZWRfXyQ352Xm4Dej0 QRSEALeSpBmwVvqtYtbI9apxJZF0d6mBSSp9cxrTR4dG8sCEp6ix27wkuES6KZO6SCunLoFxFNG JaKlprEU3yjTD2oLo7ColK2nISE0Me0mAoHWKpz+0XwW+dlCKHUhWyZGBD3zOVYmfOtaEtmAjQt ZDS5fnOklMF4Kvp+FarLrifqxU7meI6VzVsyH6PXNiACbE9hUGhEzYVaWrQDM0hHMPubV0bjTpY HXbdflk42oFI7tr/Fb7X9BNnEfc9p2bI9kdNkQPIAXqUpynRShXk3bChz+dfeTjxup7hKQcCLIV 0l/205D72abw/gliW+cefuB9znnlP56Zj8Lj2q6nTH87ik+o4nyo80CVtj3Ab50wWdV/SEbYXXT 7N/C+eYNgQFVL4eXHlcKn7w5J9SLMQ+LtR5qsG/+vh9uodHwK007bxucvFUeqed1fVlCppr6NU4 f1tMJD3wNdW4MVikgdg== X-Proofpoint-GUID: LtIWuTlgx09q6sy7Vdax1NZ92_N9OZLG X-Proofpoint-ORIG-GUID: LtIWuTlgx09q6sy7Vdax1NZ92_N9OZLG X-Authority-Analysis: v=2.4 cv=aYBRWxot c=1 sm=1 tr=0 ts=6a0c7b43 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=WLamS9KfzQc7_2FcH0gA:9 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=2026-05-19_04,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190145 Fix some memory issues and some hangs in vSIE. This is still a fallout from the gmap rewrite. v2->v3: * Add comments to pte_needs_unshadow() and crste_needs_unshadow() explaining how they work * Improve some patch descriptions v1->v2: * Fix potential leak of struct kvm_s390_mmu_cache in gmap_set_limit() * Refactor and improve the checks to determine whether an unshadowing is needed * Set and propagate vsie_gmem properly * Properly mask the address passed to gmap_insert_rmap() to prevent creating multiple redundant rmaps when shadowing * Clear the pgste.zero flag when needed, to prevent pages from getting accidentally discarded Claudio Imbrenda (5): KVM: s390: vsie: Fix memory leak when unshadowing KVM: s390: Fix leaking kvm_s390_mmu_cache in case of errors KVM: s390: vsie: Fix unshadowing logic KVM: s390: vsie: Fix redundant rmap entries KVM: s390: Properly reset zero bit in PGSTE arch/s390/kvm/dat.c | 1 + arch/s390/kvm/dat.h | 3 +- arch/s390/kvm/gaccess.c | 1 + arch/s390/kvm/gmap.c | 18 +++++++----- arch/s390/kvm/gmap.h | 61 +++++++++++++++++++++++++++++++++++++++-- 5 files changed, 73 insertions(+), 11 deletions(-) -- 2.54.0