From nobody Wed May 8 03:08:15 2024 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+72938+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+72938+1787277+3901457@groups.io; arc=fail (BodyHash is different from the expected one); dmarc=fail(p=none dis=none) header.from=oracle.com Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1615935579545108.45098550674334; Tue, 16 Mar 2021 15:59:39 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id 0tz3YY1788612xu84HKw77aS; Tue, 16 Mar 2021 15:59:39 -0700 X-Received: from aserp2120.oracle.com (aserp2120.oracle.com [141.146.126.78]) by mx.groups.io with SMTP id smtpd.web09.2852.1615935578622191423 for ; Tue, 16 Mar 2021 15:59:38 -0700 X-Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 12GMxDJ8188763; Tue, 16 Mar 2021 22:59:29 GMT X-Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 378nbma7cs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 Mar 2021 22:59:29 +0000 X-Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 12GMtjnJ020388; Tue, 16 Mar 2021 22:59:28 GMT X-Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2169.outbound.protection.outlook.com [104.47.57.169]) by aserp3020.oracle.com with ESMTP id 3797a1u7rf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 16 Mar 2021 22:59:28 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Sm1Kmmmv9eKXs2x/SU7hVDZt2aKyNeZaHwhfq+VL+Usw7sg3W0+GUbmkdkXilaUT7LDtqCEBxpJ3M1IWvVkX+bzwcdv9hJgDUVgnDi/ow5qaPyjnKr9Y8fQJ7DtCzB5HCIMRzIitzxLOXbwETVxKAXfsht02cDy+FJIyzXk5f6lAfmlqbV3q49u1JeiIZH2gRz9EtyD+qQfL8MlUheRRjvdDSuvleOVL4nE1OywL+SIjxEunZoAZ/Jjf4QPhZzd5mHJPLJBJLaBfxEUZgXPQh+JlLLaHOmzCi7UhFF0d/lGqybaetRgmNaK7cjq9wtAaFULW0WzOqq6MNKnoSBUhmw== 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=I4HAMFYC7OvDVBIhHE3dGUHQ48GYqdFt0227h6DVgTc=; b=FJQqMeXd63Sn7Gz7MQfhpZicM1SAh1IjdtWyUuMR4XYdfdpADiaNvnN3y/Ob7i1AA6JWPpRfg/SPCckfzCVeHOqS07fjtyAXlAEXqSKElUlXZU5Cgw8kmomAYjaCqAyI+JMeTujraRvWQqQeE4iBz4JcBbgv402flFkiJiOb6QWvu5qKX9slDnFZvPa5GzFbjuxWdRfDxPulEd/wokSeZIEZYNZfr9sqq7T4VwpSj1KFj3siEeDV3peteRKr7J/eCXW4mxZddVed4jc9s/W2zdk54F7VHyawob5HJiEDVXaxe231CNIHb9Nfi+RbQACWUyMITW1eUlsOH6CWAHo0fg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none X-Received: from SJ0PR10MB4605.namprd10.prod.outlook.com (2603:10b6:a03:2d9::24) by BY5PR10MB4147.namprd10.prod.outlook.com (2603:10b6:a03:20e::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32; Tue, 16 Mar 2021 22:59:26 +0000 X-Received: from SJ0PR10MB4605.namprd10.prod.outlook.com ([fe80::a021:790:7ce6:6f16]) by SJ0PR10MB4605.namprd10.prod.outlook.com ([fe80::a021:790:7ce6:6f16%6]) with mapi id 15.20.3912.031; Tue, 16 Mar 2021 22:59:26 +0000 From: "Ankur Arora" To: devel@edk2.groups.io Cc: Ankur Arora , Liming Gao , Michael D Kinney Subject: [edk2-devel] [PATCH] MdePkg: use CpuPause() in CpuDeadLoop() Date: Tue, 16 Mar 2021 15:59:18 -0700 Message-Id: <20210316225918.2625938-1-ankur.a.arora@oracle.com> X-Originating-IP: [148.87.23.6] X-ClientProxiedBy: MWHPR12CA0025.namprd12.prod.outlook.com (2603:10b6:301:2::11) To SJ0PR10MB4605.namprd10.prod.outlook.com (2603:10b6:a03:2d9::24) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-Received: from prion.us.oracle.com (148.87.23.6) by MWHPR12CA0025.namprd12.prod.outlook.com (2603:10b6:301:2::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32 via Frontend Transport; Tue, 16 Mar 2021 22:59:25 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8714329c-59b2-407a-2358-08d8e8cf25ec X-MS-TrafficTypeDiagnostic: BY5PR10MB4147: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4125; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?kn8AY5Wj1rwYMD+kGtMSAuA4QmXUtzuEVsyZxGANhBLRJZn8K9x/jRr75loM?= =?us-ascii?Q?oYGW6cTb2bjLoPCFZVabby3RD8t/ECyXWV7Tx3YcXMBWk1t64H5eQCfRFHRO?= =?us-ascii?Q?ddTpty3521DRgEmpREXzorv5MIXpdi4qz2e8rq/aWTujz4FcSs436geQ0Mk+?= =?us-ascii?Q?4eX2sLa57/BQODaHpd3aVGmlcl+fvqIfdwt3HUiohjCFceVroZFRT5paqG1L?= =?us-ascii?Q?xgY703EA8RJDJjBgO+egstOMiYRrrM6jJpSQJy0Ph8gDZ5YmqNXO6aGacRv/?= =?us-ascii?Q?wjV2aIAgJE+mkrZKpbm/LJKpFG+6M2cGPUrituICPmR7Hu55cqnmK0WkTulf?= =?us-ascii?Q?WWfryPAHKOyXJSq1yjDoWkoIDk1us+IPOYboJ1cnE/JNkI+xGRYrEzkloL6s?= =?us-ascii?Q?5x+0ZoC1Y2fIUtsl5hxonmtL0qbZj/3nR45y281Qo4V38TxMVq7afr/Ofmq2?= =?us-ascii?Q?O3D/ndEuR1cPoXihDOyRMth5cYgtKsRmqCS8KXkw5X4T5XNrGZ89i7FdM+li?= =?us-ascii?Q?mihGvK58pNkb4r8QBjMNPBwi5DTwjm+TLIq+hJ8Qe6TlQz9DXV6RkvI47VWG?= =?us-ascii?Q?t7GfME0YNzWBTTU7CXuWIUxWXUVKKceziNddYIwIASA3iCrHKYWnfmm+OhVh?= =?us-ascii?Q?UJNQVsWxtvfb6r7u12M95nIvbWcLjww44KNs82rqrAThuTdNqTMgLBroGcpG?= =?us-ascii?Q?Rz7NfRk+1RVq+SSeVuyfWdx50X2FCnW7wA7jQIyVfMDHFOitb++TUOCte5r2?= =?us-ascii?Q?0CysH+XZghkdFndGTDealLkDeMZjnL5h3eXp6MRsqGo0/OGmTEeWc73Pa4Q+?= =?us-ascii?Q?LkLpvHtV0X+ioRWaBckYfDiiahvhrfdSbOce6BDDGrGOmiJVGcQJXaKpqyvq?= =?us-ascii?Q?wPg7jBH6G4KJcemQiMvUOYeWfV8fTtJATGJKgpqWos343Y9GDV2hC6KXrX9P?= =?us-ascii?Q?2Fh96eay8iEqjdtiQojhHRbswK3DqqaEXUWRTUz2TvBzH9jgazS/9afBwW0z?= =?us-ascii?Q?d6w3447WS9NkEfJvCn8kPei9xUEyf4L/Gr+eIjBFzJbmuxfuGOUwvkqCd/6P?= =?us-ascii?Q?dD6vRlyWlkldKjJAlFFCFkeZ4SpQadAVC9ZP6vWFFWJbRytw4Z6bXAzvu1IH?= =?us-ascii?Q?9yPmGl0rznOsN2cePW0hyDmcfBHVd5u0urspI30XwQX99COIA/kKAMK8AekG?= =?us-ascii?Q?NDK/4XPR6bnvk7ZxFS+QEh/mcTGfzBUNAz0OjHGQYMHrV2ecEV/+ANOIlZw9?= =?us-ascii?Q?nEDP2B/PA0neXIfxL8SEtpuLRbUv1E+9gMYOzosxTa2KRAocgr8qkEVjeobl?= =?us-ascii?Q?rsELCxpXAtsfdeOtejSM1zF1?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8714329c-59b2-407a-2358-08d8e8cf25ec X-MS-Exchange-CrossTenant-AuthSource: SJ0PR10MB4605.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Mar 2021 22:59:26.7312 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: IbJ4v4/DRnMDdDkXwnSBGfHo5vZaKlDR4BVdEL4s67t3688DenpmYuCEKsSYpHKxIpiLuNnLJ2L5GsdwBDdJl71h44yj/n+5Y+SFgWeHv7k= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR10MB4147 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,ankur.a.arora@oracle.com X-Gm-Message-State: M4eovxp2K5fGlW3mY4w4Yicxx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1615935579; bh=Qh6MXlB7P85nACmBZ1vOBLeMcek9TjEcUIfFP02RX/Q=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=mHwBwbJTzZcSfItt+fxL7gH3K44dXgI4wICMZ3qw1bdOq01kVOyjOQZVmRzidoUzJOC 4IE9UkpROJmirGhgYKETqhFxFs6rejrN+gbIUqUtsyIu6hQ4DaAUF+FZwagmSy0r0MWZN At0paHxSXzj0UlMB68bZKabxyM4XcCppJ2o= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" Use CpuPause() to allow the CPU to go into a lower power state state while we spin wait. Cc: Liming Gao Signed-off-by: Ankur Arora Reviewed-by: Michael D Kinney Reviewed-by: Laszlo Ersek --- MdePkg/Library/BaseLib/CpuDeadLoop.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/MdePkg/Library/BaseLib/CpuDeadLoop.c b/MdePkg/Library/BaseLib/= CpuDeadLoop.c index 9e110cacbc96..3cd304351a65 100644 --- a/MdePkg/Library/BaseLib/CpuDeadLoop.c +++ b/MdePkg/Library/BaseLib/CpuDeadLoop.c @@ -28,5 +28,7 @@ CpuDeadLoop ( { volatile UINTN Index; =20 - for (Index =3D 0; Index =3D=3D 0;); + for (Index =3D 0; Index =3D=3D 0;) { + CpuPause(); + } } --=20 2.9.3 -=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 (#72938): https://edk2.groups.io/g/devel/message/72938 Mute This Topic: https://groups.io/mt/81390478/1787277 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-