From nobody Mon Feb 9 09:22:48 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+111126+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+111126+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1699856577; cv=none; d=zohomail.com; s=zohoarc; b=W0gNAj9lcFFLitkTUfEKEzHFP9sTdHfaByFtzHdVDIDIC3ZdhOWrVqlmxCtbwk89GIIbBQirTqsDBDkHOLJJ4dm+zmWT5pb7lEsOAgYFeyWJQaSXQSAXX/kF4DTLg7MQzz0pwqUBHqQie+Oa3a4tQ2sHCXiQjoIzT8ys88WVFZU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1699856577; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=/AjEjHUX1Ta0vuHREOqLNVh5jBHJWBVxrOWG1B/aD08=; b=A/tEc2J8dZRcmWeD8XozMfY/fl5PyCe1HU0mMtZK5wK+TcYTqJtV5IRaOf4y2o9IbvlVlDuMATslCwNKOg0j+nqaZrIkDcdyYaE53JBoUJpSPOFa23IFJDwANPt1rKowg1833bgQ2WfjwSftwLj70U0JDng0toSlteqJlWKYFHY= 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+111126+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 1699856577188684.3258632735921; Sun, 12 Nov 2023 22:22:57 -0800 (PST) Return-Path: DKIM-Signature: a=rsa-sha256; bh=C4idJbCYOvm04tk7Ptc3ggvDampqUQVaqM5lreevDeE=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Transfer-Encoding; s=20140610; t=1699856576; v=1; b=R0jMqdXApJ8w8RpImi79dU+iLHh7eDhBIj2bAqEyC7y+kszHqbmpE959EHQSxDecKS0YczIb u+Vd5dD4Q9kTcvDYCPH161t3nSRg7ykALK8y3d4h4MRaFuECZUPbEimKDlDLvEYyhHiplC2wA8f 2q5TaxlrbAdZcFK30zdxh0YY= X-Received: by 127.0.0.2 with SMTP id CESGYY1788612xMCzYffOae9; Sun, 12 Nov 2023 22:22:56 -0800 X-Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by mx.groups.io with SMTP id smtpd.web10.31729.1699856568636155442 for ; Sun, 12 Nov 2023 22:22:56 -0800 X-IronPort-AV: E=McAfee;i="6600,9927,10892"; a="9028405" X-IronPort-AV: E=Sophos;i="6.03,298,1694761200"; d="scan'208";a="9028405" X-Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Nov 2023 22:22:56 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10892"; a="887849655" X-IronPort-AV: E=Sophos;i="6.03,298,1694761200"; d="scan'208";a="887849655" X-Received: from shwdesssddpdwei.ccr.corp.intel.com ([10.239.157.28]) by orsmga004.jf.intel.com with ESMTP; 12 Nov 2023 22:22:54 -0800 From: "Sheng Wei" To: devel@edk2.groups.io Cc: Eric Dong , Ray Ni , Laszlo Ersek , Wu Jiaxin , Tan Dun Subject: [edk2-devel] [PATCH v4 4/5] UefiCpuPkg: Only change CR4.CET bit for enable and disable CET. Date: Mon, 13 Nov 2023 14:22:44 +0800 Message-Id: <20231113062245.649-5-w.sheng@intel.com> In-Reply-To: <20231113062245.649-1-w.sheng@intel.com> References: <20231113062245.649-1-w.sheng@intel.com> MIME-Version: 1.0 Precedence: Bulk 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,w.sheng@intel.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: 5VjY1JFIV98eg6pJrg7VflTHx1787277AA= Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1699856579142100019 Content-Type: text/plain; charset="utf-8" Signed-off-by: Sheng Wei Cc: Eric Dong Cc: Ray Ni Cc: Laszlo Ersek Cc: Wu Jiaxin Cc: Tan Dun --- UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm | 10 +++++++--- UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm | 10 +++++++--- 2 files changed, 14 insertions(+), 6 deletions(-) diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm b/UefiCpuPkg/PiSm= mCpuDxeSmm/Ia32/SmiEntry.nasm index 6368982433..1da9afab97 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm @@ -237,7 +237,9 @@ CetInterruptDone: bts ecx, 16 ; set WP mov cr0, ecx =20 - mov eax, 0x668 | CR4_CET + ; set CR4.CET bit for enable CET + mov eax, cr4 + bts eax, CR4_CET_BIT mov cr4, eax =20 setssbsy @@ -264,8 +266,10 @@ CetDone: cmp al, 0 jz CetDone2 =20 - mov eax, 0x668 - mov cr4, eax ; disable CET + ; clear CR4.CET bit for disable CET + mov eax, cr4 + btr eax, CR4_CET_BIT + mov cr4, eax =20 mov ecx, MSR_IA32_PL0_SSP pop eax diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm b/UefiCpuPkg/PiSmm= CpuDxeSmm/X64/SmiEntry.nasm index 9a225bc3be..abf9f1a90a 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm @@ -263,7 +263,9 @@ CetInterruptDone: bts ecx, 16 ; set WP mov cr0, rcx =20 - mov eax, 0x668 | CR4_CET + ; set CR4.CET bit for enable CET + mov rax, cr4 + bts rax, CR4_CET_BIT mov cr4, rax =20 setssbsy @@ -308,8 +310,10 @@ mCetSupportedAbsAddr: cmp al, 0 jz CetDone2 =20 - mov eax, 0x668 - mov cr4, rax ; disable CET + ; clear CR4.CET bit for disable CET + mov rax, cr4 + btr rax, CR4_CET_BIT + mov cr4, rax =20 mov ecx, MSR_IA32_INTERRUPT_SSP_TABLE_ADDR pop rax --=20 2.26.2.windows.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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