From patchwork Thu Oct 12 10:49:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Prateek Bora X-Patchwork-Id: 1847400 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=mhLNdvhU; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4S5mgP21JSz23jd for ; Thu, 12 Oct 2023 21:52:33 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqtGn-0000wJ-Eh; Thu, 12 Oct 2023 06:50:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqtGm-0000tP-0q; Thu, 12 Oct 2023 06:50:20 -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 1qqtGf-0004tF-JQ; Thu, 12 Oct 2023 06:50:19 -0400 Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39CAlPCA007453; Thu, 12 Oct 2023 10:50:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : content-transfer-encoding : mime-version; s=pp1; bh=i8zGGpREGRw1iF9MWRLll0W7YX2fowYkfQX/voF/hZI=; b=mhLNdvhUDapG30s6EiN89uaKTRUZsZWiO+HJsvyQLN11pzrF7q2w0VMvKPph6JAXptwD TNeHWH17LERnmqq0OSTrpzPg0ZfYqLuljR/Sfm2Rs8Y7K8ot+i3oxTNS0khd6IPoL/fx MUJs2Y+Tlc5a2/03e3Up1PZA7Y4Min5By3mTYZrtpvkMk/kv78M5W7VuInHf5cf59Y4x 6U7Ls1/bucaSvLE9OwgBdliTPTSjNpO0y3uG5o3MHJPvfN6I3855CHQIvgMKR4y9Gnra JsN/7wIIkEz/MkklEjmqoWE1Qc4HABevpzrL5Ss9n49dYi0x/wO4ffRlzYAhJH973iPD Uw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3tpfbr029x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:06 +0000 Received: from m0356517.ppops.net (m0356517.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 39CAlrPj008904; Thu, 12 Oct 2023 10:50:05 GMT 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 3tpfbr029k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:05 +0000 Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 39C8nUiD024465; Thu, 12 Oct 2023 10:50:04 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3tkhnsy8wn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:04 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 39CAo1Ua53936520 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 12 Oct 2023 10:50:01 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B20AD20040; Thu, 12 Oct 2023 10:50:01 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CD35420043; Thu, 12 Oct 2023 10:49:59 +0000 (GMT) Received: from li-1901474c-32f3-11b2-a85c-fc5ff2c001f3.in.ibm.com (unknown [9.109.242.129]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 12 Oct 2023 10:49:59 +0000 (GMT) From: Harsh Prateek Bora To: npiggin@gmail.com, qemu-ppc@nongnu.org Cc: clegoate@redhat.com, qemu-devel@nongnu.org, mikey@neuling.org, vaibhav@linux.ibm.com, jniethe5@gmail.com, sbhat@linux.ibm.com, kconsul@linux.vnet.ibm.com, danielhb413@gmail.com Subject: [PATCH v2 00/14] Nested PAPR API (KVM on PowerVM) Date: Thu, 12 Oct 2023 16:19:37 +0530 Message-Id: <20231012104951.194876-1-harshpb@linux.ibm.com> X-Mailer: git-send-email 2.39.3 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: VLqjuq0tdXn3qJRvCpEZg1wwL4hp0sW2 X-Proofpoint-GUID: SpEED1nMgOwlN9NMwCKxfHubdksD6oa9 X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-12_05,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=851 malwarescore=0 priorityscore=1501 clxscore=1015 adultscore=0 mlxscore=0 spamscore=0 impostorscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310120088 Received-SPF: pass client-ip=148.163.156.1; envelope-from=harshpb@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, T_SPF_HELO_TEMPERROR=0.01 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org There is an existing Nested-HV API to enable nested guests on powernv machines. However, that is not supported on pseries/PowerVM LPARs. This patch series implements required hcall interfaces to enable nested guests with KVM on PowerVM. Unlike Nested-HV, with this API, entire L2 state is retained by L0 during guest entry/exit and uses pre-defined Guest State Buffer (GSB) format to communicate guest state between L1 and L2 via L0. L0 here refers to the phyp/PowerVM, or launching a Qemu TCG L0 with the newly introduced option cap-nested-papr=true. L1 refers to the LPAR host on PowerVM or Linux booted on Qemu TCG with above mentioned option cap-nested-papr=true. L2 refers to nested guest running on top of L1 using KVM. No SW changes needed for Qemu running in L1 Linux as well as L2 Kernel. There is a Linux Kernel side patch series to enable support for Nested PAPR in L1 and same can be found at below url: Linux Kernel patch series: - https://lore.kernel.org/linuxppc-dev/20230914030600.16993-1-jniethe5@gmail.com/ For more details, documentation can be referred in either of patch series. There are scripts available to assist in setting up an environment for testing nested guests at https://github.com/iamjpn/kvm-powervm-test A tree with this series is available at: https://github.com/planetharsh/qemu/tree/upstream-kop-1012 Thanks to Michael Neuling, Shivaprasad Bhat, Kautuk Consul, Vaibhav Jain and Jordan Niethe. Changelog: v2: - Addressed review comments from Nick on v1 series. v1: - https://lore.kernel.org/qemu-devel/20230906043333.448244-1-harshpb@linux.ibm.com/ Harsh Prateek Bora (14): spapr: nested: move nested part of spapr_get_pate into spapr_nested.c spapr: nested: Introduce SpaprMachineStateNested to store related info. spapr: nested: Document Nested PAPR API spapr: nested: Introduce cap-nested-papr for Nested PAPR API spapr: nested: register nested-hv api hcalls only for cap-nested-hv spapr: nested: Introduce H_GUEST_[GET|SET]_CAPABILITIES hcalls. spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls. spapr: nested: Introduce H_GUEST_CREATE_VPCU hcall. spapr: nested: Initialize the GSB elements lookup table. spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls. spapr: nested: Use correct source for parttbl info for nested PAPR API. spapr: nested: rename nested_host_state to nested_hv_host spapr: nested: keep nested-hv exit code restricted to its API. spapr: nested: Introduce H_GUEST_RUN_VCPU hcall. docs/devel/nested-papr.txt | 500 +++++++++++ hw/ppc/spapr.c | 32 +- hw/ppc/spapr_caps.c | 63 ++ hw/ppc/spapr_hcall.c | 2 - hw/ppc/spapr_nested.c | 1439 ++++++++++++++++++++++++++++++- include/hw/ppc/spapr.h | 21 +- include/hw/ppc/spapr_cpu_core.h | 7 +- include/hw/ppc/spapr_nested.h | 361 ++++++++ target/ppc/cpu.h | 2 + 9 files changed, 2368 insertions(+), 59 deletions(-) create mode 100644 docs/devel/nested-papr.txt