From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 6463D488233; Thu, 27 Aug 2026 15:53:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787845992; cv=none; b=JzFYX1ScPQcuL5M29Xw2Q8zzu0E6YWTjuo9SxqkF3XJN/2osYD5zavK/8chnRDub+VAw7nh6+31BT+7ZWzd7lagJif75BHImen1G+kxw4VkoNoV84RIdO99SR7geDR/bZkEoRWcAkaiPqI2D+vdWveosd5ACJ3FIlj4ocJ+rHIY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787845992; c=relaxed/simple; bh=3ISA+GddFojxUU2v2CUzfwLCCzz2AX0OTr/H/Qd3XIk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=b2Th8XUZsKqdvEFt+b0qTWYFs+g4p/zFFPLPDUu89DMNoCuzP225AdMAVHAeYOoUdmDTvwSL56i1nWSPNPRSfVFD9ufG7biWnkaUjzuRjXQQc3W6AlhK2tJfanO3nmGPPsQCiyULqj/lKQKvdhsfZqa6Le59aEerpnC60qcUddY= 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=Cev1VcOM; arc=none smtp.client-ip=148.163.156.1 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="Cev1VcOM" Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67RF58591478410; Thu, 27 Aug 2026 15:53:08 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=MkIt57 sA0lOAnb5RQJCAO5ScI0tf4xW9qOrLcFx/NmQ=; b=Cev1VcOMEoP38xIYeTxBrh WYgHD7XFPxxzJcZQL/HVNQt6oZF3LZ+GUuce4LQzQzWkwz3NFFTroRj4piatKJDO 6lbR7383ZAslkxsQlqUUmL1tlTc5bUXSGygZMN5ufLlDdxORN9woA9HWEEkpUwZ3 P9p5+oPUUfeLtWUjx2uBJcYuGgsx9NoWmGCpbCjkJcD97j280d3t1DeDwGMBtnvr BVyjG4VodeN/2k29mcJC8YuNXxJe6M9U1+EGHBd4xT7V6NNM41jfG53QA9moMCmd Onrxm4jK+8uVHezpfvN0ipzO+3mkycuDv0U2mdgE49aTM/0hG5ZEhgC2PU2gSo1g == Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4g73er6b90-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Aug 2026 15:53:07 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 67RFfeGr008831; Thu, 27 Aug 2026 15:53:06 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4g7rsygm9t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Aug 2026 15:53:06 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 67RFr29p36438380 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 27 Aug 2026 15:53:03 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BB2F320043; Thu, 27 Aug 2026 15:53:02 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 105752004F; Thu, 27 Aug 2026 15:53:02 +0000 (GMT) Received: from [192.168.88.251] (unknown [9.111.61.153]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 27 Aug 2026 15:53:01 +0000 (GMT) From: Christoph Schlameuss Date: Thu, 27 Aug 2026 17:52:51 +0200 Subject: [PATCH v6 11/21] KVM: s390: vsie: Add helper reset_vsie_page() and unshadow_intercept() Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260827-vsie-sigpi-v6-11-8020bb53be52@linux.ibm.com> References: <20260827-vsie-sigpi-v6-0-8020bb53be52@linux.ibm.com> In-Reply-To: <20260827-vsie-sigpi-v6-0-8020bb53be52@linux.ibm.com> To: kvm@vger.kernel.org, linux-s390@vger.kernel.org Cc: Alexander Gordeev , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Eric Farman , Heiko Carstens , Janosch Frank , Nico Boehr , Sven Schnelle , Vasily Gorbik , Paolo Bonzini , Shuah Khan , Sean Christopherson , Christoph Schlameuss X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1501; i=schlameuss@linux.ibm.com; h=from:subject:message-id; bh=3ISA+GddFojxUU2v2CUzfwLCCzz2AX0OTr/H/Qd3XIk=; b=owGbwMvMwCUmoqVx+bqN+mXG02pJDFkTYoPnt7yu8r40P2LtypNdD1Z92NYmzP926o59DMesh Hj3HBds7ShlYRDjYpAVU2SpFrfOq+prXTrnoOU1mDmsTCBDGLg4BWAihYEMf3j81n0QUaiYeSPs 0PYTLSePhobO9TnXdr3ao73Nb1P1+rWMDKuDHuxPer7PesrX8v/X/1qVnSteGLE1uSEp9kLqmdl TfvAAAA== X-Developer-Key: i=schlameuss@linux.ibm.com; a=openpgp; fpr=0E34A68642574B2253AF4D31EEED6AB388551EC3 X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: OlgjpafPyYVu8xSOLw2Y2V3FkKQGV9ep X-Proofpoint-ORIG-GUID: mz4hJSZCXofe89YAukSpnxstODvYxfBe X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI3MDEzMSBTYWx0ZWRfX5sFbA2Fn8QBG jB11/DmmoeNoojhl/o1rzECjMEVa/Z6FVW1IiDsd8bMVnYCSJu4ptDQR9Qc8NtwESj8xroDLuYa czom+3HgXAu7kodvM01xuwq8yeIzu0a6PDXkrI7/s2YaHP/fV4kZhraPFVGKjRH0RyLoOuYYYYr tES9cUL0FWHKsSEtNrW/qTPwsV2noZ38ruPyvG1sZzSgXvzhI4CxZM8jV/9F9BM5dNCaqQF7fAV 6VFhlmu4TjV+WYx2aae1sS25O+oqanSFL/1H4HpNuOSmW24lYuCx3XsMRbkmizm4I/8mkp+vHWz 32gw6DQ5hCMxrmJl9W2MOmBQtlyT4mOxwlsh50v4MhHPndbTRAJWE9HNAR9qXbw0QorJ/LUdYCX JeGVkeMRrchKF1GqVuv7KkSnaN7pOJSUYwK7LgXbbfoOqjhj4gVjQGSiODPayx0J/fxj8y1/7zR fbi8H/7eAaMUioR5UhQ== X-Authority-Analysis: v=2.4 cv=QsRuG1yd c=1 sm=1 tr=0 ts=6a905d64 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=BT4YM3xfTWJAqdQ5kpwA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Info: AW1haW4tMjYwODI3MDEzMSBTYWx0ZWRfX/n4EXF3AV7m1 3DKXQHCe+3tSCrh/KVFmJLyxfKhyu9VrDdXgdWR+3Hp4CDfd5HyBPEVqwF3qzgWlcYK1QC4DA+v XmjRU4yUq8fsr1QMELGxdPeyyI2lDME= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-27_06,2026-08-27_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608270131 Extract helper method from existing code to reuse in new code. reset_vsie_page() clears and releases gmap related to vsie_page. Signed-off-by: Christoph Schlameuss --- arch/s390/kvm/s390/vsie.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/arch/s390/kvm/s390/vsie.c b/arch/s390/kvm/s390/vsie.c index 78d59fc535f7..95baac9a1ccb 100644 --- a/arch/s390/kvm/s390/vsie.c +++ b/arch/s390/kvm/s390/vsie.c @@ -1530,6 +1530,16 @@ static struct vsie_page *alloc_vsie_page(struct kvm *kvm) return vsie_page; } +/* Reset shadow state after a vsie_page has been (re)initialised for a new SCB. */ +static void reset_vsie_page(struct kvm *kvm, struct vsie_page *vsie_page) +{ + memset(&vsie_page->scb_s, 0, sizeof(struct kvm_s390_sie_block)); + release_gmap_shadow_safe(kvm, vsie_page); + prefix_unmapped(vsie_page); + vsie_page->fault_addr = 0; + vsie_page->scb_s.ihcpu = 0xffffU; +} + /* * Get or create a vsie page for a scb address. * @@ -1595,11 +1605,8 @@ static struct vsie_page *get_vsie_page(struct kvm *kvm, unsigned long addr) vsie_page->scb_gpa = addr; mutex_unlock(&kvm->arch.vsie.mutex); - memset(&vsie_page->scb_s, 0, sizeof(struct kvm_s390_sie_block)); - release_gmap_shadow_safe(kvm, vsie_page); - prefix_unmapped(vsie_page); - vsie_page->fault_addr = 0; - vsie_page->scb_s.ihcpu = 0xffffU; + reset_vsie_page(kvm, vsie_page); + return vsie_page; } -- 2.55.0