From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B62FBC54F51 for ; Wed, 29 Jul 2026 16:31:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wp7BM-0003f5-PN; Wed, 29 Jul 2026 12:31:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wp7BL-0003em-U3; Wed, 29 Jul 2026 12:30:59 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wp7BJ-0002hG-3c; Wed, 29 Jul 2026 12:30:59 -0400 Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66TFHn0d356419; Wed, 29 Jul 2026 16:30:51 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=VrmZ6oWEzawslv5z7qwpzvKCOk1bqmPse8PYp4rEy Lo=; b=VND821RKvItKJIn3c+oLAj++vOF1HTmV7wX/UPhSif3741Hb5NBWYW7mL Uptg9ZOMT6ov2lMFXYlCv5QzGoP3frrcjq1QdbhycQoSXfwGv36nxF29IGguK6R5 p5CCSTxYwpDHpWj7qTlzjKyAD6mpobxBIQv7k9M3c20AWKWgJN/Fp2p/63Qtw06C ggjhvm61hM/p1XYMP42Kj9JvhbR8pvjBIv0zw842NMDPbgTKT9RW8EdZtipCUYGs tot3+Jp6g188nbB/SMfehK8doh/B2KccgBRqIRBrSaVLuIDKBkzZCEJiJlmykPGI ZE+e0P0tNfC192DhviCZnyAIhv0wA== Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4fmuw7knfh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Jul 2026 16:30:51 +0000 (GMT) Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 66TGQFCT010643; Wed, 29 Jul 2026 16:30:50 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 4fn9pgfa5t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 29 Jul 2026 16:30:50 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 66TGUi8h31195524 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 29 Jul 2026 16:30:44 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5AAAF2004B; Wed, 29 Jul 2026 16:30:44 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1F8E520040; Wed, 29 Jul 2026 16:30:44 +0000 (GMT) Received: from p-imbrenda.ehn-de.ibm.com (unknown [9.224.75.30]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 29 Jul 2026 16:30:44 +0000 (GMT) From: Claudio Imbrenda To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, pasic@linux.ibm.com, mhartmay@linux.ibm.com, david@kernel.org, farman@linux.ibm.com, mjrosato@linux.ibm.com, richard.henderson@linaro.org, iii@linux.ibm.com, cohuck@redhat.com Subject: [PATCH v2 0/1] target/s390x: Allow 2G hugepages guest backing Date: Wed, 29 Jul 2026 18:30:42 +0200 Message-ID: <20260729163043.843517-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: BjLqOMOAtL5rjJrBTZGGSvCm17zgciTg X-Proofpoint-ORIG-GUID: BjLqOMOAtL5rjJrBTZGGSvCm17zgciTg X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzI5MDEyOSBTYWx0ZWRfX2MQ5i40IkO+l 6ztGFSStwxy97W+eRZ2XIM8k1gYCTMObw6rmoOvt+c2YFMJwvep0E8eov43OPu1JtuJltCLrJXh fjo+f3iAiqBmboiDtAKXZUBDF56NHLCa4Se/baAOtNc1a3VYR1mevI49n7W7QOXb3bj8r9OLN8q sC7SNXY7aUiQ5y8ie0W6+7m8jDwPhvCH6WvKm/XybD/QZdyvs0K0ySS/JRXmorjMN9ZjZq19JS6 9VxKEStLYB7JicQILd4p6AxT4/dybUwoMaZrvwyFyieYWtjnKUQLm1vatnR6hw1f14fKIcMO3wU uewAZk2+0Em2wLZYxirhM+8QpAebR1x3orYsiznHu5YHpskGykIevDtQ45oxGkhxeVuaJJjgU59 70sJuroTQXymKudrfeiqZ2hNY2f/5IgBhUWf6GtuZwq+Chns5qPOUpURs4qCHcDYtPdwcqGbxLa 1TpkyssxNJNwzo5mnKg== X-Authority-Analysis: v=2.4 cv=SKFykuvH c=1 sm=1 tr=0 ts=6a6a2abb cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=NKObR2d5V9wX7O2UfkQA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI5MDEyOSBTYWx0ZWRfXx8dnXQIWXVQ5 NRTzv4oBedNzzC53Vp9KPa7oscPelkakDbS846wmt4rLEeOKhSyTSJTPZGrQHY7QEi9OMi7mB2u vyB2Gbfjp2ztANYbTQ4joTGl2ZSJptg= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-29_06,2026-07-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 bulkscore=0 impostorscore=0 phishscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607290129 Received-SPF: pass client-ip=148.163.156.1; envelope-from=imbrenda@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, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Allow mapping guest with 2G hugepages on hosts that support it. Add new helper functions to check whether hpages are in effect, and which size. v1->v2: * Rename the global variable to cap_hpage * Use different values of cap_hpage to distinguish between hpage sizes * Add wrappers to test for specific hpage sizes Claudio Imbrenda (1): target/s390x: Allow 2G hugepages guest backing target/s390x/diag.c | 2 +- target/s390x/kvm/kvm.c | 40 +++++++++++++++++++++++------------- target/s390x/kvm/kvm_s390x.h | 2 ++ target/s390x/kvm/stubs.c | 10 +++++++++ 4 files changed, 39 insertions(+), 15 deletions(-) -- 2.55.0