From nobody Sun Feb 8 22:08:26 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+56193+1787277+3901457@groups.io; arc=fail (BodyHash is different from the expected one) Received: from web01.groups.io (web01.groups.io [66.175.222.12]) by mx.zohomail.com with SMTPS id 158507169219871.43346449179933; Tue, 24 Mar 2020 10:41:32 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id kLF5YY1788612xohmIAeBbDt; Tue, 24 Mar 2020 10:41:31 -0700 X-Received: from NAM12-DM6-obe.outbound.protection.outlook.com (NAM12-DM6-obe.outbound.protection.outlook.com [40.107.243.45]) by mx.groups.io with SMTP id smtpd.web10.1354.1585071691231708611 for ; Tue, 24 Mar 2020 10:41:31 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GDCqrsdveu5t2KjiubPj+fbuj1ZgxLRDucOmXJiAlRJG53joMin+cjsstLSQ+3xmaDw3xJZwUqzJwQcsPvPZ/iOkmErYLtnpmcys5ZVkihE3rcPRhVqGRmwzQnedgWtkGwTsZ8KGH/OFQPQaT2ryGIkDS+ucq140GqltOaho+mT4XqyAHOdni4szzqy1gjaaPBTHSYDLnN4x/lMBTcWulM76xeVqD6V+bsUHBB6cOCtgDDqWwZ5QMWEMFXjAf+EWXB9+KEDavwi1vRO3qwYOosP+Y51SxKj/tO4GgV2/be8obaniuoAY13ES+jLvgTM4UPFbUjn+wwqEm6gO3Q6oxg== 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=gQ9Q8wKAv2imCE/hSKBJfwPnpJH531wjoxXqf4kV02M=; b=RfEeftmPYjFl3QDHSqUXrcOJRw1x68ojbGvfQNtTJ08Fi8YjQaZu4WpV4KiEKuyY+KQ7byoHcTu4shGwrhVR4zndI9fKLr34YXZkbCTlpGml9Y3feLA/RSPHhzWaserKN6KjRis5HIGLxCX/nQTR9V73Gz3xX8E6yWf291W+yJGZdkHcOXEF6fWH/CQBCWtwiqVBJcX5XWF9TsAD0NKdP/eamk8F94Eh3ZGU0DrfzBovNcbtTR9qUL0kc9DvKqg8EG8h6tYQfvqultLB4o1MN6dN6Rinp16ajrdEwbh8f76AVF8r48xo72oOuJA/NgPVfnOM9OPJO4lljGuHF3dJAg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none X-Received: from DM6PR12MB3163.namprd12.prod.outlook.com (2603:10b6:5:15e::26) by DM6PR12MB3915.namprd12.prod.outlook.com (2603:10b6:5:1c4::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.22; Tue, 24 Mar 2020 17:41:30 +0000 X-Received: from DM6PR12MB3163.namprd12.prod.outlook.com ([fe80::f0f9:a88f:f840:2733]) by DM6PR12MB3163.namprd12.prod.outlook.com ([fe80::f0f9:a88f:f840:2733%7]) with mapi id 15.20.2835.023; Tue, 24 Mar 2020 17:41:30 +0000 From: "Lendacky, Thomas" To: devel@edk2.groups.io Cc: Jordan Justen , Laszlo Ersek , Ard Biesheuvel , Michael D Kinney , Liming Gao , Eric Dong , Ray Ni , Brijesh Singh Subject: [edk2-devel] [PATCH v6 21/42] UefiCpuPkg/CpuExceptionHandler: Add support for RDTSCP NAE events Date: Tue, 24 Mar 2020 12:40:35 -0500 Message-Id: <648e40fb9da3877a8ee757a612deace29f460e95.1585071656.git.thomas.lendacky@amd.com> In-Reply-To: References: X-ClientProxiedBy: DM5PR06CA0025.namprd06.prod.outlook.com (2603:10b6:3:5d::11) To DM6PR12MB3163.namprd12.prod.outlook.com (2603:10b6:5:15e::26) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-Received: from tlendack-t1.amd.com (165.204.77.1) by DM5PR06CA0025.namprd06.prod.outlook.com (2603:10b6:3:5d::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2835.19 via Frontend Transport; Tue, 24 Mar 2020 17:41:29 +0000 X-Originating-IP: [165.204.77.1] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 97e8d07b-449f-42f0-4681-08d7d01a95d4 X-MS-TrafficTypeDiagnostic: DM6PR12MB3915:|DM6PR12MB3915: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2000; Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) client-ip=66.175.222.12; envelope-from=bounce+27952+56193+1787277+3901457@groups.io; helo=web01.groups.io; Received-SPF: None (protection.outlook.com: amd.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: WuSlpsvfjfBSnZr2h1mukV8Ix4FjQTIouzbol0SyQVGrC27PfTn3QG8nxTcTFHUjP/h5SqoH1TX4AdcWN+VI/Zf5o4QBVJ54LQX/7Zp4W1XIktnaGOCvMyysVp5wARJVex9rUdYI1b77rbfEFd9IvQ== X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 97e8d07b-449f-42f0-4681-08d7d01a95d4 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Mar 2020 17:41:30.0576 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: KqU1Od2uGmX1ge0ypXVLW6HZU/0A6QbU/g5N7SYqQ8tjo0UR6D1A9EohMwAo+TEYTsswP1mN8LGG0SgpEsSbOg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3915 Precedence: Bulk List-Unsubscribe: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,thomas.lendacky@amd.com X-Gm-Message-State: 5m6sJojNuVdgvEOmRcKyk9WKx1787277AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1585071691; bh=sDfJorMb5yRV0olS/LQ1u0Nem4kqYki+daDtdnehdAM=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=Ns6lHTuPpxuUfzduYV0DhED6ItsIWZehSy51IYV7P/0Qxtljj3yE18TqXdMCgPdnYAp LemULgY36PmzinaHP9FEsc6c8ij+Sb+5dvWV7QcZbLOux440iqjgrouRvp0Tn+klZTAQd lnSHfPtQqCGaSC991B++dlmJD6CwbLVpcos= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D2198 Under SEV-ES, a RDTSCP intercept generates a #VC exception. VMGEXIT must be used to allow the hypervisor to handle this intercept. Cc: Eric Dong Cc: Ray Ni Cc: Laszlo Ersek Signed-off-by: Tom Lendacky --- .../X64/ArchAMDSevVcHandler.c | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHand= ler.c b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c index 7b57229a770c..fcd4738b2915 100644 --- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c +++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c @@ -609,6 +609,35 @@ WbinvdExit ( return 0; } =20 +STATIC +UINT64 +RdtscpExit ( + GHCB *Ghcb, + EFI_SYSTEM_CONTEXT_X64 *Regs, + SEV_ES_INSTRUCTION_DATA *InstructionData + ) +{ + UINT64 Status; + + DecodeModRm (Regs, InstructionData); + + Status =3D VmgExit (Ghcb, SvmExitRdtscp, 0, 0); + if (Status) { + return Status; + } + + if (!GhcbIsRegValid (Ghcb, GhcbRax) || + !GhcbIsRegValid (Ghcb, GhcbRcx) || + !GhcbIsRegValid (Ghcb, GhcbRdx)) { + return UnsupportedExit (Ghcb, Regs, InstructionData); + } + Regs->Rax =3D Ghcb->SaveArea.Rax; + Regs->Rcx =3D Ghcb->SaveArea.Rcx; + Regs->Rdx =3D Ghcb->SaveArea.Rdx; + + return 0; +} + STATIC UINT64 VmmCallExit ( @@ -1039,6 +1068,10 @@ DoVcCommon ( NaeExit =3D VmmCallExit; break; =20 + case SvmExitRdtscp: + NaeExit =3D RdtscpExit; + break; + case SvmExitWbinvd: NaeExit =3D WbinvdExit; break; --=20 2.17.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#56193): https://edk2.groups.io/g/devel/message/56193 Mute This Topic: https://groups.io/mt/72522873/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-