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Tue, 19 Oct 2021 19:40:12 +0000 X-Received: from sbrijesh-desktop.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Tue, 19 Oct 2021 14:40:08 -0500 From: "Brijesh Singh via groups.io" To: CC: James Bottomley , Min Xu , "Jiewen Yao" , Tom Lendacky , "Jordan Justen" , Ard Biesheuvel , Erdem Aktas , "Michael Roth" , Gerd Hoffmann , Brijesh Singh , Michael Roth , Ray Ni , Rahul Kumar , Eric Dong Subject: [edk2-devel] [PATCH v10 23/32] UefiCpuPkg: add PcdGhcbHypervisorFeatures Date: Tue, 19 Oct 2021 14:39:25 -0500 Message-ID: <20211019193934.1052465-24-brijesh.singh@amd.com> In-Reply-To: <20211019193934.1052465-1-brijesh.singh@amd.com> References: <20211019193934.1052465-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5343300a-2954-4904-21f8-08d993384446 X-MS-TrafficTypeDiagnostic: DM5PR12MB2439: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Message-Info: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2021 19:40:12.1005 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5343300a-2954-4904-21f8-08d993384446 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT054.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR12MB2439 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: 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,brijesh.singh@amd.com X-Gm-Message-State: yUTjiVkr7CaLfaVnfbMlCiEax1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1634672431; bh=iQC5Ssrun5V+F3S4/qIxJt+Gd+BhphWzDIaAOjuTfWM=; h=CC:Content-Type:Date:From:Reply-To:Subject:To; b=OUgGqHOx8KuXnZl/kaqt4zVxusOL6/srTG+ZxwAQ+c/F7BZTRSAK21z+jdlhJglhmxA LH8nv5MLLu59rAOBpZo+aDo47X8lhoi5233j6HIlH8nWZGJGhjXHYLMLb7wZZVkRMiyef V+enDyL+1MCPyTocygd5BY2wvYFKOAwOrMw= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1634672433381100001 Content-Type: text/plain; charset="utf-8" BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3275 Version 2 of the GHCB specification added a new VMGEXIT that the guest could use for querying the hypervisor features. One of the immediate users for it will be an AP creation code. When SEV-SNP is enabled, the guest can use the newly added AP_CREATE VMGEXIT to create the APs. The MpInitLib will check the hypervisor feature, and if AP_CREATE is available, it will use it. See GHCB spec version 2 for more details on the VMGEXIT. Cc: Michael Roth Cc: Ray Ni Cc: Rahul Kumar Cc: Eric Dong Cc: James Bottomley Cc: Min Xu Cc: Jiewen Yao Cc: Tom Lendacky Cc: Jordan Justen Cc: Ard Biesheuvel Cc: Erdem Aktas Cc: Gerd Hoffmann Acked-by: Gerd Hoffmann Signed-off-by: Brijesh Singh --- UefiCpuPkg/UefiCpuPkg.dec | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index 62acb291f309..7de66fde674c 100644 --- a/UefiCpuPkg/UefiCpuPkg.dec +++ b/UefiCpuPkg/UefiCpuPkg.dec @@ -396,5 +396,10 @@ [PcdsDynamic, PcdsDynamicEx] # @Prompt SEV-ES Status gUefiCpuPkgTokenSpaceGuid.PcdSevEsIsEnabled|FALSE|BOOLEAN|0x60000016 =20 + ## This dynamic PCD contains the hypervisor features value obtained thro= ugh the GHCB HYPERVISOR + # features VMGEXIT defined in the version 2 of GHCB spec. + # @Prompt GHCB Hypervisor Features + gUefiCpuPkgTokenSpaceGuid.PcdGhcbHypervisorFeatures|0x0|UINT64|0x60000018 + [UserExtensions.TianoCore."ExtraFiles"] UefiCpuPkgExtra.uni --=20 2.25.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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