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 X-Spam-Level: X-Spam-Status: No, score=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1473AC43214 for ; Fri, 13 Aug 2021 20:26:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED5EA6103A for ; Fri, 13 Aug 2021 20:26:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234488AbhHMU0z (ORCPT ); Fri, 13 Aug 2021 16:26:55 -0400 Received: from mail-dm3nam07on2120.outbound.protection.outlook.com ([40.107.95.120]:12224 "EHLO NAM02-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234037AbhHMU0y (ORCPT ); Fri, 13 Aug 2021 16:26:54 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=A6g6l9cYis25WihgKlGKU/RZDzLQjOKNlvRAHPr3qeWLroP+nVKXkTefKHtCJYvIKHnQmTMlaBXOQ3GRPa6EXXTGKP9Eh1Y7VaMjMsfrY7Acj0/7MMaX2tKAF0EndebJNjhNBk8dIITXIsrtXjz0CbhbSMYhZASakOTK4C3mZ4VOyMl6ldknmeFgY+z6uIqxTCgmY560r3aUrChk0p9AuD1y0rzLFwHqse4WR/OLP5ZYxdqhFlQe54yw/7HvaSpFoGHrzf/MyNZD7SRvKTg2Ao6tJpuh+vNPV1+HFahiTvRUywNJ0SNb5LiWRap7V7sYPKzgm9fzJeUGOj6N3q+PFA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uSjZFw4IYdkuV55KvpmYCB+d8Z/zYCy0L7lVeoa3LBM=; b=K947ukP0YWv+I2nRFEcIidwNXTLXNVTGv5Z96kLDRrmBSJQJB+pwI7NF4drCuTLNN0Pr61OAhRGh0vR9x5wQBd8fJayjMT4FyNUjfAjvC5spVhH8TyRL8Adr35FZKB5FY4l1U3tkERSWMmJxmOwWzbHEfj6YQbhN6arVypA0PWxCeehLOfMaSAvLCUIxB/KkiUfR+M2APQElmRzCq+0N1VeI7Af9/kQz/tMu7M/QBIHFyfvnTumQV7WBpzVgeNcVj1gCCNeJLx82gnltOaQUa+HU675I+Ig0zV6crusNPtGjcysAULQt5awd8WMavZvY8BTcKcJ/atkjX8XdmtBGag== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microsoft.com; dmarc=pass action=none header.from=microsoft.com; dkim=pass header.d=microsoft.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uSjZFw4IYdkuV55KvpmYCB+d8Z/zYCy0L7lVeoa3LBM=; b=YuF1pqVifVtgz4pRoMPWPtGqUXVt56tmGUa6QHC62OZv/io67f30CvM1oct8P+C9HuodCsF4xqRldBii0gl4lFqJR77IVGToFHvGg9mavvJWDuVktIYy+2yexJ5VMqQdkROw6NZj5gLXpNd8ELUoLbDIEUvZ0jg7xSRC6DScYdU= Received: from MWHPR21MB1593.namprd21.prod.outlook.com (2603:10b6:301:7c::11) by MW4PR21MB1972.namprd21.prod.outlook.com (2603:10b6:303:7a::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.4; Fri, 13 Aug 2021 20:26:22 +0000 Received: from MWHPR21MB1593.namprd21.prod.outlook.com ([fe80::e8f7:b582:9e2d:ba55]) by MWHPR21MB1593.namprd21.prod.outlook.com ([fe80::e8f7:b582:9e2d:ba55%2]) with mapi id 15.20.4436.012; Fri, 13 Aug 2021 20:26:22 +0000 From: Michael Kelley To: Tianyu Lan , KY Srinivasan , Haiyang Zhang , Stephen Hemminger , "wei.liu@kernel.org" , Dexuan Cui , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "x86@kernel.org" , "hpa@zytor.com" , "dave.hansen@linux.intel.com" , "luto@kernel.org" , "peterz@infradead.org" , "konrad.wilk@oracle.com" , "boris.ostrovsky@oracle.com" , "jgross@suse.com" , "sstabellini@kernel.org" , "joro@8bytes.org" , "will@kernel.org" , "davem@davemloft.net" , "kuba@kernel.org" , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "arnd@arndb.de" , "hch@lst.de" , "m.szyprowski@samsung.com" , "robin.murphy@arm.com" , "thomas.lendacky@amd.com" , "brijesh.singh@amd.com" , "ardb@kernel.org" , Tianyu Lan , "pgonda@google.com" , "martin.b.radev@gmail.com" , "akpm@linux-foundation.org" , "kirill.shutemov@linux.intel.com" , "rppt@kernel.org" , "sfr@canb.auug.org.au" , "saravanand@fb.com" , "krish.sadhukhan@oracle.com" , "aneesh.kumar@linux.ibm.com" , "xen-devel@lists.xenproject.org" , "rientjes@google.com" , "hannes@cmpxchg.org" , "tj@kernel.org" CC: "iommu@lists.linux-foundation.org" , "linux-arch@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "netdev@vger.kernel.org" , vkuznets , "parri.andrea@gmail.com" , "dave.hansen@intel.com" Subject: RE: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page Thread-Topic: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page Thread-Index: AQHXjUfuQqXPk5/9iUqTH41i8so9wqtxzWQQgAAaltA= Date: Fri, 13 Aug 2021 20:26:21 +0000 Message-ID: References: <20210809175620.720923-1-ltykernel@gmail.com> <20210809175620.720923-6-ltykernel@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ActionId=d2377fda-39f2-4403-a606-910723ff0f1f;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ContentBits=0;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=true;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Method=Standard;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=Internal;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2021-08-13T18:49:42Z;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microsoft.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 4c56698d-081e-41c7-2bc6-08d95e989d80 x-ms-traffictypediagnostic: MW4PR21MB1972: x-ms-exchange-transport-forked: True x-ld-processed: 72f988bf-86f1-41af-91ab-2d7cd011db47,ExtAddr x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:3826; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR21MB1593.namprd21.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(921005)(8990500004)(4326008)(122000001)(8936002)(66946007)(7696005)(52536014)(8676002)(53546011)(7406005)(38100700002)(2940100002)(5660300002)(2906002)(33656002)(6506007)(7416002)(86362001)(316002)(83380400001)(10290500003)(508600001)(9686003)(38070700005)(66446008)(76116006)(186003)(82950400001)(110136005)(55016002)(71200400001)(64756008)(66556008)(26005)(66476007)(82960400001)(54906003);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?HHnguf8k2A0ke1C/g43w8Bu1Ts6Hdd2fq+nZyXM2Vlyi6iYPhCNPJdZ1Q/Uf?= =?us-ascii?Q?M7OqArgQBB8UR0o6XdwdodOF7zMgx7z/7jvA98B2OgTJwKCx/lHgcqJLOOVn?= =?us-ascii?Q?RBKnuGZx/E1lp4OzQVoueFJ+5ntLf5oUGdytGG6Su+qy14KLL+7TSyIimCsO?= =?us-ascii?Q?Dc0nd44cU9NeOaE0Q66lZma+ShGkLA48A5EVkWpPsuaXCM912tYb5+QkahF8?= =?us-ascii?Q?zZYN+b4S71rtrj0yRYKpupMa3GSE5S6er3rX88RBRLKOWyq/Tbmk3B6X4PGh?= =?us-ascii?Q?ASYEwimno/wWrvw01ZYctpOut8yEKcP+Z1yuygM6shEo0c0uUeZgn2+rf2xG?= =?us-ascii?Q?8zTCBTM7YMT4PL9uyThSLrpoq7lhBSujoZr2uB/s8IstgDBilTT5QCE2TClT?= =?us-ascii?Q?jEpRlnVG/bmoWLyrYVzn11T/KQJOg1RmbuEN5X+q4TKz/rvmLYB3+aI43Ybb?= =?us-ascii?Q?NzjG+QxU+QZFWBe/st7opXSb5lXVy/DAqWZhjVTFozwNNi14kRWCvZS6s60f?= =?us-ascii?Q?gQ7DDuZCyTP45Kb61VTsWTMfJMfeX8SIlueXnAjKpUzF/3jjhzqfvNcIUQjP?= =?us-ascii?Q?hYNLXf9Lp68p4UfV3W4Zk3gA+EDZ1twkthiCeikHrX0A8zbLOlO+Gx+ib4u2?= =?us-ascii?Q?k1g/+vREUkO6u5gPSErkSYbMuhOyqRSulL8+vOD2JwwobIrFsZlf6dHeGKyW?= =?us-ascii?Q?KE/eDArLWCqKVJgQourBtgdmIBkhdj7t2BMejVSXrueAh50B+hbSr8gZpgvX?= =?us-ascii?Q?tOF+YxFrQ1WFahpo8vBajPAoBNsSKHTMKsGDmx6zvMIB2QYG6UDG2gTFVrC8?= =?us-ascii?Q?GhqhnmeINuvFwbp4vltyTua94yXxQvtRMeJOH82izjCW3mbFhFug2L0rRPEG?= =?us-ascii?Q?gfPji9aAsEUvlOSEIT5zUoRbaZiDUl7xb9Hn9haAoigcdr3SEnimFxQgfZoy?= =?us-ascii?Q?iPRJB0hY1Vds4TI3Mxd7CT1ySfKGGHL3lAjslHbpRcs0LD4rIf+vz7xtJ3L/?= =?us-ascii?Q?xcJlkhRcW9Hw3f7L3XzXFAqA4gS4NZEHAS7oEu2ctO/BoNT8ETdafjMox+S7?= =?us-ascii?Q?MADAs+wgwCVYJJLvmkkrY/W2Wx5TGH2zxBt+t/PkldZI+sjy2+359PLPgoWC?= =?us-ascii?Q?6StwsXBi5D3gdgiM9qQiiGCU+0WxuSMPoRRjX67KvBFf7UgfGkdfrMYfY1kx?= =?us-ascii?Q?MeMdq6Gg24tMu25K7HpB3D6MZrFgF/P+BybXaG7joub9Nmbr6YNzysjwQSd4?= =?us-ascii?Q?OnqrceeUQ5xTAeFtIGsE5ubJ+aYx/S3ngKD9AkK6qOZOL+Igy/NE1z3DQs+U?= =?us-ascii?Q?EbRyAa4Ct1E4YrOoD6q+8ax4?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MWHPR21MB1593.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4c56698d-081e-41c7-2bc6-08d95e989d80 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Aug 2021 20:26:21.8499 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: xzWN79PcQkKD4LoVtmx3Si4TxYUrZymDvPd+0ZpDE3+bJuoVwR5oWB8lLB4IMuKobBU2cozGDSwdWjXw577Uj4mz9rpJqZsucZrCN72tcnk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR21MB1972 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michael Kelley Sent: Friday, August 13, 2021= 12:31 PM > To: Tianyu Lan ; KY Srinivasan ; = Haiyang Zhang ; > Stephen Hemminger ; wei.liu@kernel.org; Dexuan Cu= i ; > tglx@linutronix.de; mingo@redhat.com; bp@alien8.de; x86@kernel.org; hpa@z= ytor.com; dave.hansen@linux.intel.com; > luto@kernel.org; peterz@infradead.org; konrad.wilk@oracle.com; boris.ostr= ovsky@oracle.com; jgross@suse.com; > sstabellini@kernel.org; joro@8bytes.org; will@kernel.org; davem@davemloft= .net; kuba@kernel.org; jejb@linux.ibm.com; > martin.petersen@oracle.com; arnd@arndb.de; hch@lst.de; m.szyprowski@samsu= ng.com; robin.murphy@arm.com; > thomas.lendacky@amd.com; brijesh.singh@amd.com; ardb@kernel.org; Tianyu L= an ; > pgonda@google.com; martin.b.radev@gmail.com; akpm@linux-foundation.org; k= irill.shutemov@linux.intel.com; > rppt@kernel.org; sfr@canb.auug.org.au; saravanand@fb.com; krish.sadhukhan= @oracle.com; > aneesh.kumar@linux.ibm.com; xen-devel@lists.xenproject.org; rientjes@goog= le.com; hannes@cmpxchg.org; > tj@kernel.org > Cc: iommu@lists.linux-foundation.org; linux-arch@vger.kernel.org; linux-h= yperv@vger.kernel.org; linux- > kernel@vger.kernel.org; linux-scsi@vger.kernel.org; netdev@vger.kernel.or= g; vkuznets ; > parri.andrea@gmail.com; dave.hansen@intel.com > Subject: RE: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb p= age >=20 > From: Tianyu Lan Sent: Monday, August 9, 2021 10:56= AM > > Subject: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb pag= e >=20 > See previous comments about tag in the Subject line. >=20 > > Hyper-V provides GHCB protocol to write Synthetic Interrupt > > Controller MSR registers in Isolation VM with AMD SEV SNP > > and these registers are emulated by hypervisor directly. > > Hyper-V requires to write SINTx MSR registers twice. First > > writes MSR via GHCB page to communicate with hypervisor > > and then writes wrmsr instruction to talk with paravisor > > which runs in VMPL0. Guest OS ID MSR also needs to be set > > via GHCB. > > > > Signed-off-by: Tianyu Lan > > --- > > Change since v1: > > * Introduce sev_es_ghcb_hv_call_simple() and share code > > between SEV and Hyper-V code. > > --- > > arch/x86/hyperv/hv_init.c | 33 ++------- > > arch/x86/hyperv/ivm.c | 110 +++++++++++++++++++++++++++++ > > arch/x86/include/asm/mshyperv.h | 78 +++++++++++++++++++- > > arch/x86/include/asm/sev.h | 3 + > > arch/x86/kernel/cpu/mshyperv.c | 3 + > > arch/x86/kernel/sev-shared.c | 63 ++++++++++------- > > drivers/hv/hv.c | 121 ++++++++++++++++++++++---------- > > include/asm-generic/mshyperv.h | 12 +++- > > 8 files changed, 329 insertions(+), 94 deletions(-) > > > > diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c > > index b3683083208a..ab0b33f621e7 100644 > > --- a/arch/x86/hyperv/hv_init.c > > +++ b/arch/x86/hyperv/hv_init.c > > @@ -423,7 +423,7 @@ void __init hyperv_init(void) > > goto clean_guest_os_id; > > > > if (hv_isolation_type_snp()) { > > - ms_hyperv.ghcb_base =3D alloc_percpu(void *); > > + ms_hyperv.ghcb_base =3D alloc_percpu(union hv_ghcb __percpu *); >=20 > union hv_ghcb isn't defined. It is not added until patch 6 of the series= . >=20 Ignore this comment. My mistake. Michael 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 X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 767B1C4338F for ; Fri, 13 Aug 2021 20:26:35 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0C30460560 for ; Fri, 13 Aug 2021 20:26:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0C30460560 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lists.linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id C540A407B7; Fri, 13 Aug 2021 20:26:34 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id D7n2v08TWIBn; Fri, 13 Aug 2021 20:26:30 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id 82880407B4; Fri, 13 Aug 2021 20:26:30 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 445DCC001A; Fri, 13 Aug 2021 20:26:30 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [IPv6:2605:bc80:3010::133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9AFB8C000E for ; Fri, 13 Aug 2021 20:26:28 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 8052740171 for ; Fri, 13 Aug 2021 20:26:28 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=microsoft.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JvTOQSKoTc8j for ; Fri, 13 Aug 2021 20:26:27 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam07on2123.outbound.protection.outlook.com [40.107.95.123]) by smtp2.osuosl.org (Postfix) with ESMTPS id 54253400FF for ; Fri, 13 Aug 2021 20:26:27 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=A6g6l9cYis25WihgKlGKU/RZDzLQjOKNlvRAHPr3qeWLroP+nVKXkTefKHtCJYvIKHnQmTMlaBXOQ3GRPa6EXXTGKP9Eh1Y7VaMjMsfrY7Acj0/7MMaX2tKAF0EndebJNjhNBk8dIITXIsrtXjz0CbhbSMYhZASakOTK4C3mZ4VOyMl6ldknmeFgY+z6uIqxTCgmY560r3aUrChk0p9AuD1y0rzLFwHqse4WR/OLP5ZYxdqhFlQe54yw/7HvaSpFoGHrzf/MyNZD7SRvKTg2Ao6tJpuh+vNPV1+HFahiTvRUywNJ0SNb5LiWRap7V7sYPKzgm9fzJeUGOj6N3q+PFA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uSjZFw4IYdkuV55KvpmYCB+d8Z/zYCy0L7lVeoa3LBM=; b=K947ukP0YWv+I2nRFEcIidwNXTLXNVTGv5Z96kLDRrmBSJQJB+pwI7NF4drCuTLNN0Pr61OAhRGh0vR9x5wQBd8fJayjMT4FyNUjfAjvC5spVhH8TyRL8Adr35FZKB5FY4l1U3tkERSWMmJxmOwWzbHEfj6YQbhN6arVypA0PWxCeehLOfMaSAvLCUIxB/KkiUfR+M2APQElmRzCq+0N1VeI7Af9/kQz/tMu7M/QBIHFyfvnTumQV7WBpzVgeNcVj1gCCNeJLx82gnltOaQUa+HU675I+Ig0zV6crusNPtGjcysAULQt5awd8WMavZvY8BTcKcJ/atkjX8XdmtBGag== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microsoft.com; dmarc=pass action=none header.from=microsoft.com; dkim=pass header.d=microsoft.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uSjZFw4IYdkuV55KvpmYCB+d8Z/zYCy0L7lVeoa3LBM=; b=YuF1pqVifVtgz4pRoMPWPtGqUXVt56tmGUa6QHC62OZv/io67f30CvM1oct8P+C9HuodCsF4xqRldBii0gl4lFqJR77IVGToFHvGg9mavvJWDuVktIYy+2yexJ5VMqQdkROw6NZj5gLXpNd8ELUoLbDIEUvZ0jg7xSRC6DScYdU= Received: from MWHPR21MB1593.namprd21.prod.outlook.com (2603:10b6:301:7c::11) by MW4PR21MB1972.namprd21.prod.outlook.com (2603:10b6:303:7a::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.4; Fri, 13 Aug 2021 20:26:22 +0000 Received: from MWHPR21MB1593.namprd21.prod.outlook.com ([fe80::e8f7:b582:9e2d:ba55]) by MWHPR21MB1593.namprd21.prod.outlook.com ([fe80::e8f7:b582:9e2d:ba55%2]) with mapi id 15.20.4436.012; Fri, 13 Aug 2021 20:26:22 +0000 To: Tianyu Lan , KY Srinivasan , Haiyang Zhang , Stephen Hemminger , "wei.liu@kernel.org" , Dexuan Cui , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "x86@kernel.org" , "hpa@zytor.com" , "dave.hansen@linux.intel.com" , "luto@kernel.org" , "peterz@infradead.org" , "konrad.wilk@oracle.com" , "boris.ostrovsky@oracle.com" , "jgross@suse.com" , "sstabellini@kernel.org" , "joro@8bytes.org" , "will@kernel.org" , "davem@davemloft.net" , "kuba@kernel.org" , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "arnd@arndb.de" , "hch@lst.de" , "m.szyprowski@samsung.com" , "robin.murphy@arm.com" , "thomas.lendacky@amd.com" , "brijesh.singh@amd.com" , "ardb@kernel.org" , Tianyu Lan , "pgonda@google.com" , "martin.b.radev@gmail.com" , "akpm@linux-foundation.org" , "kirill.shutemov@linux.intel.com" , "rppt@kernel.org" , "sfr@canb.auug.org.au" , "saravanand@fb.com" , "krish.sadhukhan@oracle.com" , "aneesh.kumar@linux.ibm.com" , "xen-devel@lists.xenproject.org" , "rientjes@google.com" , "hannes@cmpxchg.org" , "tj@kernel.org" Subject: RE: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page Thread-Topic: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page Thread-Index: AQHXjUfuQqXPk5/9iUqTH41i8so9wqtxzWQQgAAaltA= Date: Fri, 13 Aug 2021 20:26:21 +0000 Message-ID: References: <20210809175620.720923-1-ltykernel@gmail.com> <20210809175620.720923-6-ltykernel@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ActionId=d2377fda-39f2-4403-a606-910723ff0f1f; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ContentBits=0; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=true; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Method=Standard; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=Internal; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2021-08-13T18:49:42Z; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microsoft.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 4c56698d-081e-41c7-2bc6-08d95e989d80 x-ms-traffictypediagnostic: MW4PR21MB1972: x-ms-exchange-transport-forked: True x-ld-processed: 72f988bf-86f1-41af-91ab-2d7cd011db47,ExtAddr x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:3826; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MWHPR21MB1593.namprd21.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(921005)(8990500004)(4326008)(122000001)(8936002)(66946007)(7696005)(52536014)(8676002)(53546011)(7406005)(38100700002)(2940100002)(5660300002)(2906002)(33656002)(6506007)(7416002)(86362001)(316002)(83380400001)(10290500003)(508600001)(9686003)(38070700005)(66446008)(76116006)(186003)(82950400001)(110136005)(55016002)(71200400001)(64756008)(66556008)(26005)(66476007)(82960400001)(54906003); DIR:OUT; SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?HHnguf8k2A0ke1C/g43w8Bu1Ts6Hdd2fq+nZyXM2Vlyi6iYPhCNPJdZ1Q/Uf?= =?us-ascii?Q?M7OqArgQBB8UR0o6XdwdodOF7zMgx7z/7jvA98B2OgTJwKCx/lHgcqJLOOVn?= =?us-ascii?Q?RBKnuGZx/E1lp4OzQVoueFJ+5ntLf5oUGdytGG6Su+qy14KLL+7TSyIimCsO?= =?us-ascii?Q?Dc0nd44cU9NeOaE0Q66lZma+ShGkLA48A5EVkWpPsuaXCM912tYb5+QkahF8?= =?us-ascii?Q?zZYN+b4S71rtrj0yRYKpupMa3GSE5S6er3rX88RBRLKOWyq/Tbmk3B6X4PGh?= =?us-ascii?Q?ASYEwimno/wWrvw01ZYctpOut8yEKcP+Z1yuygM6shEo0c0uUeZgn2+rf2xG?= =?us-ascii?Q?8zTCBTM7YMT4PL9uyThSLrpoq7lhBSujoZr2uB/s8IstgDBilTT5QCE2TClT?= =?us-ascii?Q?jEpRlnVG/bmoWLyrYVzn11T/KQJOg1RmbuEN5X+q4TKz/rvmLYB3+aI43Ybb?= =?us-ascii?Q?NzjG+QxU+QZFWBe/st7opXSb5lXVy/DAqWZhjVTFozwNNi14kRWCvZS6s60f?= =?us-ascii?Q?gQ7DDuZCyTP45Kb61VTsWTMfJMfeX8SIlueXnAjKpUzF/3jjhzqfvNcIUQjP?= =?us-ascii?Q?hYNLXf9Lp68p4UfV3W4Zk3gA+EDZ1twkthiCeikHrX0A8zbLOlO+Gx+ib4u2?= =?us-ascii?Q?k1g/+vREUkO6u5gPSErkSYbMuhOyqRSulL8+vOD2JwwobIrFsZlf6dHeGKyW?= =?us-ascii?Q?KE/eDArLWCqKVJgQourBtgdmIBkhdj7t2BMejVSXrueAh50B+hbSr8gZpgvX?= =?us-ascii?Q?tOF+YxFrQ1WFahpo8vBajPAoBNsSKHTMKsGDmx6zvMIB2QYG6UDG2gTFVrC8?= =?us-ascii?Q?GhqhnmeINuvFwbp4vltyTua94yXxQvtRMeJOH82izjCW3mbFhFug2L0rRPEG?= =?us-ascii?Q?gfPji9aAsEUvlOSEIT5zUoRbaZiDUl7xb9Hn9haAoigcdr3SEnimFxQgfZoy?= =?us-ascii?Q?iPRJB0hY1Vds4TI3Mxd7CT1ySfKGGHL3lAjslHbpRcs0LD4rIf+vz7xtJ3L/?= =?us-ascii?Q?xcJlkhRcW9Hw3f7L3XzXFAqA4gS4NZEHAS7oEu2ctO/BoNT8ETdafjMox+S7?= =?us-ascii?Q?MADAs+wgwCVYJJLvmkkrY/W2Wx5TGH2zxBt+t/PkldZI+sjy2+359PLPgoWC?= =?us-ascii?Q?6StwsXBi5D3gdgiM9qQiiGCU+0WxuSMPoRRjX67KvBFf7UgfGkdfrMYfY1kx?= =?us-ascii?Q?MeMdq6Gg24tMu25K7HpB3D6MZrFgF/P+BybXaG7joub9Nmbr6YNzysjwQSd4?= =?us-ascii?Q?OnqrceeUQ5xTAeFtIGsE5ubJ+aYx/S3ngKD9AkK6qOZOL+Igy/NE1z3DQs+U?= =?us-ascii?Q?EbRyAa4Ct1E4YrOoD6q+8ax4?= MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MWHPR21MB1593.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4c56698d-081e-41c7-2bc6-08d95e989d80 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Aug 2021 20:26:21.8499 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: xzWN79PcQkKD4LoVtmx3Si4TxYUrZymDvPd+0ZpDE3+bJuoVwR5oWB8lLB4IMuKobBU2cozGDSwdWjXw577Uj4mz9rpJqZsucZrCN72tcnk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR21MB1972 Cc: "linux-arch@vger.kernel.org" , "parri.andrea@gmail.com" , "linux-hyperv@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "dave.hansen@intel.com" , "iommu@lists.linux-foundation.org" , vkuznets X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Michael Kelley via iommu Reply-To: Michael Kelley Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Michael Kelley Sent: Friday, August 13, 2021 12:31 PM > To: Tianyu Lan ; KY Srinivasan ; Haiyang Zhang ; > Stephen Hemminger ; wei.liu@kernel.org; Dexuan Cui ; > tglx@linutronix.de; mingo@redhat.com; bp@alien8.de; x86@kernel.org; hpa@zytor.com; dave.hansen@linux.intel.com; > luto@kernel.org; peterz@infradead.org; konrad.wilk@oracle.com; boris.ostrovsky@oracle.com; jgross@suse.com; > sstabellini@kernel.org; joro@8bytes.org; will@kernel.org; davem@davemloft.net; kuba@kernel.org; jejb@linux.ibm.com; > martin.petersen@oracle.com; arnd@arndb.de; hch@lst.de; m.szyprowski@samsung.com; robin.murphy@arm.com; > thomas.lendacky@amd.com; brijesh.singh@amd.com; ardb@kernel.org; Tianyu Lan ; > pgonda@google.com; martin.b.radev@gmail.com; akpm@linux-foundation.org; kirill.shutemov@linux.intel.com; > rppt@kernel.org; sfr@canb.auug.org.au; saravanand@fb.com; krish.sadhukhan@oracle.com; > aneesh.kumar@linux.ibm.com; xen-devel@lists.xenproject.org; rientjes@google.com; hannes@cmpxchg.org; > tj@kernel.org > Cc: iommu@lists.linux-foundation.org; linux-arch@vger.kernel.org; linux-hyperv@vger.kernel.org; linux- > kernel@vger.kernel.org; linux-scsi@vger.kernel.org; netdev@vger.kernel.org; vkuznets ; > parri.andrea@gmail.com; dave.hansen@intel.com > Subject: RE: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page > > From: Tianyu Lan Sent: Monday, August 9, 2021 10:56 AM > > Subject: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page > > See previous comments about tag in the Subject line. > > > Hyper-V provides GHCB protocol to write Synthetic Interrupt > > Controller MSR registers in Isolation VM with AMD SEV SNP > > and these registers are emulated by hypervisor directly. > > Hyper-V requires to write SINTx MSR registers twice. First > > writes MSR via GHCB page to communicate with hypervisor > > and then writes wrmsr instruction to talk with paravisor > > which runs in VMPL0. Guest OS ID MSR also needs to be set > > via GHCB. > > > > Signed-off-by: Tianyu Lan > > --- > > Change since v1: > > * Introduce sev_es_ghcb_hv_call_simple() and share code > > between SEV and Hyper-V code. > > --- > > arch/x86/hyperv/hv_init.c | 33 ++------- > > arch/x86/hyperv/ivm.c | 110 +++++++++++++++++++++++++++++ > > arch/x86/include/asm/mshyperv.h | 78 +++++++++++++++++++- > > arch/x86/include/asm/sev.h | 3 + > > arch/x86/kernel/cpu/mshyperv.c | 3 + > > arch/x86/kernel/sev-shared.c | 63 ++++++++++------- > > drivers/hv/hv.c | 121 ++++++++++++++++++++++---------- > > include/asm-generic/mshyperv.h | 12 +++- > > 8 files changed, 329 insertions(+), 94 deletions(-) > > > > diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c > > index b3683083208a..ab0b33f621e7 100644 > > --- a/arch/x86/hyperv/hv_init.c > > +++ b/arch/x86/hyperv/hv_init.c > > @@ -423,7 +423,7 @@ void __init hyperv_init(void) > > goto clean_guest_os_id; > > > > if (hv_isolation_type_snp()) { > > - ms_hyperv.ghcb_base = alloc_percpu(void *); > > + ms_hyperv.ghcb_base = alloc_percpu(union hv_ghcb __percpu *); > > union hv_ghcb isn't defined. It is not added until patch 6 of the series. > Ignore this comment. My mistake. Michael _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu