From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2D3F3DC4B1; Mon, 1 Jun 2026 15:30:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780327816; cv=none; b=E8eoD902WjZF3REwQRWDzxwOJlJZmHsrJqsrSG8gsB1gA6qRndXJ6u1t+Ol6rWlqG9beQHJ34kIlRvly+ZSdfs0Z7w8QVmzn+pKpEzmW734hiHrmNiqknqaJr6ZtZI2xnSlrPKNVPVJKmN2ZBrCrPfY8X0MFrHqBEIEFEUPzq2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780327816; c=relaxed/simple; bh=8CYjYz9HAXrOkjBw1aCHLcJbD5CJzQVlQdaF5xfDY1w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=eua6wEHqOBxeTVI/9dns3a7qiv5q7DBe/GbUhbisUypYVZxDI8WjGqfk8tWDT8TFLMtHVKnnGoUtgLCTGtm7vCcwlvOci/3/+x6HodfsM6CSjBScKbQ7E4Hf7IjO++o1ig90VuRhtorVAriSsxoF7GiPrJnWgd0KGpr1oVl+3WY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=lud+W5px; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="lud+W5px" Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 651EpJGH2190646; Mon, 1 Jun 2026 15:29:58 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=CzvVPmwU861ysRE6OGTQUccPIaD8AXpTtcvBuNpQI sw=; b=lud+W5pxyKTrQIRT75gCuDUxt+ltGxAU4exMLdd+I7lGvgWeZKU+l56yM X42e4+SMgnNT2xPotONrXwnKD32F6vFAPq0JIW+krL/F2Qrj8wcWYMNgyrrVP7XX axuIs6E20cvvIfChySE7rlwgDy9fkduAhe7YWyBbZQQlzDvSf75TZZD3XvobRQ9R 3JNnjbs/NhU1KndU5EKDPWyaqsdGzZ4+JSQxVBYTL5bp22iKxkr9WmL7lCzx7OKW 4ytq7FoKDYHPk8rIbUMB9JAvQDEZ7kBpPec18HoeNbHCEs7p50eGpZn5wje9RuKM ZPQmUWuzoHw1i2zYm8UYv92a+jpxg== Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4efpae17s3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 01 Jun 2026 15:29:58 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 651FOKxL026051; Mon, 1 Jun 2026 15:29:57 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4ega7q6yjk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 01 Jun 2026 15:29:57 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com [10.20.54.103]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 651FTq5V30015754 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 1 Jun 2026 15:29:52 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0B6DD20043; Mon, 1 Jun 2026 15:29:52 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D465C20040; Mon, 1 Jun 2026 15:29:51 +0000 (GMT) Received: from p-imbrenda.aag-de.ibm.com (unknown [9.52.223.175]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 1 Jun 2026 15:29:51 +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 v2 0/8] KVM: s390: More gmap and vsie fixes Date: Mon, 1 Jun 2026 17:29:43 +0200 Message-ID: <20260601152951.196859-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=Zt3d7d7G c=1 sm=1 tr=0 ts=6a1da576 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=RDX2kTa0qNrNx1cvdRQA:9 X-Proofpoint-GUID: Wcj4gJuZMu9NlehUJ0PzJo26HJjjkVXK X-Proofpoint-ORIG-GUID: Wcj4gJuZMu9NlehUJ0PzJo26HJjjkVXK X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjAxMDE1MSBTYWx0ZWRfXwT0z/ECy1P/U Xstc9GGoV2WTHHI65Ko7AuEdBcexsMwo0Mkx7YXdKKJ2MRYV1KGkGjyykxnslY1DvRsubXIc24e VTCc73DDh2X39rejvmlhNBZ1hR9Z5GOJZi8IvVFwgLev9nxF1Z51MIa1eOG7zaSmUpkCLby+9Cb YhZ4I0v1kBw5iLoapyL3FIUh4p7xWH28DdsgjTYvdbQC31+J390T9WjCrpHRtR5U7PqtSwuFyub /W3cOunUHLl5+xR54Zs0QzG6sjnUwvXrqzGvF1nKeZ//2aZlkFO7XW7W79KdIYYDbVD5wPm3Ykm tW+tCOROQdGB2I3ZqX/lfu/4GE/t+PcHry/kFqzoquOCSFoVmYm4IEnp+K8tPadlhYwYbGot9zP e2xF78CyYEiBQJyJPLFa6TAqa4bLYQLqjUQ+r/SkU2UO6wsZiaf/NhEMb8oJ2xlLVeLvp9wY7bU BuPO7B0F0DD7HSAW78A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-01_04,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 phishscore=0 spamscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606010151 Another batch of fixups for gmap and vsie. Some minor fixes, some not-so-minor fixes that could have caused guest corruption under particular circumstances. v1->v2: * Reordered the patches * _gmap_crstep_xchg_atomic() will now attempt to clear the vsie_notif bit when failing due to unshadowing; this prevents potential loops * try_get_locked_pte() will now return -EAGAIN instead of NULL if the pte was reached but the lock was contended; this prevents potential loops * _kvm_s390_pv_make_secure() will now attempt mmap_read_trylock(); this prevents try_get_locked_pte() from potentially racing * Take kvm->slots_lock instead of kvm->slots_arch_lock in kvm_s390_set_mem_control() when handling KVM_S390_VM_MEM_LIMIT_SIZE, and also take kvm->lock. * Minor cosmetic / style fixes. Claudio Imbrenda (8): KVM: s390: Fix _gmap_unmap_crste() KVM: s390: Fix _gmap_crstep_xchg_atomic() KVM: s390: Avoid potentially sleeping while atomic when zapping pages KVM: s390: Fix guest / virtual address confusion in _essa_clear_cbrl() KVM: s390: vsie: Fix rmap handling in _do_shadow_crste() KVM: s390: Fix fault-in code KVM: s390: Lock pte when making page secure KVM: s390: Prevent memslots outside the ASCE range arch/s390/include/asm/gmap_helpers.h | 1 + arch/s390/kvm/faultin.c | 14 ++-- arch/s390/kvm/gaccess.c | 11 +-- arch/s390/kvm/gmap.c | 19 ++++- arch/s390/kvm/gmap.h | 3 + arch/s390/kvm/kvm-s390.c | 30 ++++++- arch/s390/kvm/priv.c | 8 +- arch/s390/kvm/pv.c | 21 ++++- arch/s390/mm/gmap_helpers.c | 117 ++++++++++++++++----------- 9 files changed, 157 insertions(+), 67 deletions(-) -- 2.54.0