From nobody Mon Feb 9 06:33:57 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+88214+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88214+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1648597632; cv=none; d=zohomail.com; s=zohoarc; b=nr2fsX7/mi0eWXnItkLJpIYL5bbJrAQPD21h8fO6vyzA8Y06QOWTdWsb5Q/Lv6GKdHiXSyfORJ6dQIyrFVl45gqu6ynzymCQsuRJioUEfZH5hgKohu6zKV/JxCHi0/H70O6eLQ/Nk6zfSL4P+Zyn6LRoyLIIg2hGkbivbJU/Lb0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1648597632; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=eMX/PcMQ0dw5Sh7ZPjA6pYKn/O7B+K4HKacJQWidnbU=; b=XA6KUL8GdkojSZ03FxIEW+G3VgY6PJdVilYCXpA7bTsmwunb+ZwAHtMV1Yh6hRTbyDUYEddt+JNAxHsO8aZz7SrZgHQ61YbxTXl/DWXTKkPh8+Yr/bdAsFiVAlzFH1/4yVyVk0nwBVE566NdGLokCdN6Lw5mnZFvbK1V/6KDEwc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88214+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1648597632718410.09375998581083; Tue, 29 Mar 2022 16:47:12 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id FFV6YY1788612xIECV6dAtWR; Tue, 29 Mar 2022 16:47:12 -0700 X-Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by mx.groups.io with SMTP id smtpd.web12.1139.1648597631562797263 for ; Tue, 29 Mar 2022 16:47:11 -0700 X-IronPort-AV: E=McAfee;i="6200,9189,10301"; a="259374914" X-IronPort-AV: E=Sophos;i="5.90,220,1643702400"; d="scan'208";a="259374914" X-Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 16:47:11 -0700 X-IronPort-AV: E=Sophos;i="5.90,220,1643702400"; d="scan'208";a="521658396" X-Received: from zhangpen-mobl.ccr.corp.intel.com (HELO mxu9-mobl1.ccr.corp.intel.com) ([10.255.29.230]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 16:47:08 -0700 From: "Min Xu" To: devel@edk2.groups.io Cc: Min Xu , Brijesh Singh , Erdem Aktas , James Bottomley , Jiewen Yao , Tom Lendacky , Eric Dong , Ray Ni , Rahul Kumar , Gerd Hoffmann Subject: [edk2-devel] [PATCH V12 05/47] UefiCpuPkg: Extend VmgExitLibNull to handle #VE exception Date: Wed, 30 Mar 2022 07:45:58 +0800 Message-Id: <9cb12b09eb6697d2998b0a4711f9c7124a96e641.1648555175.git.min.m.xu@intel.com> In-Reply-To: References: MIME-Version: 1.0 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,min.m.xu@intel.com X-Gm-Message-State: EjdnFLmFbZq4Pe6mqrnnvJpMx1787277AA= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1648597632; bh=39C/AaN0FIkEwVvV5MBzis7P3tk5cNgIo/H2AGI+rMo=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=vlGcKcXAJYMWkoU6Z7U2futDGiiCF2+sm5BzfvQZ9hgtBdEPLEJApniWIQ+H8uroNKP BpA+tRZU/XzsjBSYkO/ACD3RR9mT7GhWeM9rNx6kcDcT5qrFhjCgXEI5DzWgOhLgapHpt cI81d2hSA1nACciBaKtGkgC3Asx1Zq1RHgg= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1648597634406100023 RFC=EF=BC=9A https://bugzilla.tianocore.org/show_bug.cgi?id=3D3429 VmgExitLib performs the necessary processing to handle a #VC exception. VmgExitLibNull is a NULL instance of VmgExitLib which provides a default limited interface. In this commit VmgExitLibNull is extended to handle a #VE exception with a default limited interface. A full feature version of #VE handler will be created later. Cc: Brijesh Singh Cc: Erdem Aktas Cc: James Bottomley Cc: Jiewen Yao Cc: Tom Lendacky Cc: Eric Dong Cc: Ray Ni Cc: Rahul Kumar Cc: Gerd Hoffmann Acked-by: Gerd Hoffmann Reviewed-by: Ray Ni Signed-off-by: Min Xu --- UefiCpuPkg/Include/Library/VmgExitLib.h | 28 ++++++++++++++ .../Library/VmgExitLibNull/VmTdExitNull.c | 38 +++++++++++++++++++ .../Library/VmgExitLibNull/VmgExitLibNull.inf | 1 + 3 files changed, 67 insertions(+) create mode 100644 UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c diff --git a/UefiCpuPkg/Include/Library/VmgExitLib.h b/UefiCpuPkg/Include/L= ibrary/VmgExitLib.h index ebda1c3d907c..f9f911099a7b 100644 --- a/UefiCpuPkg/Include/Library/VmgExitLib.h +++ b/UefiCpuPkg/Include/Library/VmgExitLib.h @@ -15,6 +15,8 @@ #include #include =20 +#define VE_EXCEPTION 20 + /** Perform VMGEXIT. =20 @@ -142,4 +144,30 @@ VmgExitHandleVc ( IN OUT EFI_SYSTEM_CONTEXT SystemContext ); =20 +/** + Handle a #VE exception. + + Performs the necessary processing to handle a #VE exception. + + The base library function returns an error equal to VE_EXCEPTION, + to be propagated to the standard exception handling stack. + + @param[in, out] ExceptionType Pointer to an EFI_EXCEPTION_TYPE to be s= et + as value to use on error. + @param[in, out] SystemContext Pointer to EFI_SYSTEM_CONTEXT + + @retval EFI_SUCCESS Exception handled + @retval EFI_UNSUPPORTED #VE not supported, (new) exception value= to + propagate provided + @retval EFI_PROTOCOL_ERROR #VE handling failed, (new) exception val= ue to + propagate provided + +**/ +EFI_STATUS +EFIAPI +VmTdExitHandleVe ( + IN OUT EFI_EXCEPTION_TYPE *ExceptionType, + IN OUT EFI_SYSTEM_CONTEXT SystemContext + ); + #endif diff --git a/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c b/UefiCpuPkg/= Library/VmgExitLibNull/VmTdExitNull.c new file mode 100644 index 000000000000..6a4e8087cb89 --- /dev/null +++ b/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c @@ -0,0 +1,38 @@ +/** @file + + Copyright (c) 2021, Intel Corporation. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ +#include +#include +#include + +/** + Handle a #VE exception. + + Performs the necessary processing to handle a #VE exception. + + @param[in, out] ExceptionType Pointer to an EFI_EXCEPTION_TYPE to be s= et + as value to use on error. + @param[in, out] SystemContext Pointer to EFI_SYSTEM_CONTEXT + + @retval EFI_SUCCESS Exception handled + @retval EFI_UNSUPPORTED #VE not supported, (new) exception value= to + propagate provided + @retval EFI_PROTOCOL_ERROR #VE handling failed, (new) exception val= ue to + propagate provided + +**/ +EFI_STATUS +EFIAPI +VmTdExitHandleVe ( + IN OUT EFI_EXCEPTION_TYPE *ExceptionType, + IN OUT EFI_SYSTEM_CONTEXT SystemContext + ) +{ + *ExceptionType =3D VE_EXCEPTION; + + return EFI_UNSUPPORTED; +} diff --git a/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf b/UefiCpu= Pkg/Library/VmgExitLibNull/VmgExitLibNull.inf index d8770a21c355..4aab601939ff 100644 --- a/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf +++ b/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf @@ -17,6 +17,7 @@ =20 [Sources.common] VmgExitLibNull.c + VmTdExitNull.c =20 [Packages] MdePkg/MdePkg.dec --=20 2.29.2.windows.2 -=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 (#88214): https://edk2.groups.io/g/devel/message/88214 Mute This Topic: https://groups.io/mt/90121190/1787277 Mute #ve:https://edk2.groups.io/g/devel/mutehashtag/ve 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-