From nobody Thu May 16 18:31:07 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+110026+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+110026+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1698223540; cv=none; d=zohomail.com; s=zohoarc; b=exIaRpjwtQ08noH8lTzAeG7bszMTk3myn3LWyfRKFc2AfzzDPhjbibD7gbwE4OMDxh9AXcndO5f7YbjpWnaIfLA7DSYVnZolwRXkpVcFWo6yZboGDu9mkTZCqOv+e2Hytp/jnFjlL+jAlFlrycojztfr4ykps4LsxrxNFb1DauY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1698223540; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:Sender:Subject:Subject:To:To:Message-Id; bh=cxGLVq5B0n6F/Ng7btNubYZvXzvu8OxsCEoAqhb172c=; b=Hgoo3ZrF39yLrtBTM41RCHz7uCv3YeM9R3M0ifxlElei0W/1FlTwU7u+BcE4/VwXtbQsiL/ZaHRrB+5zQtuit+kfYsivdZhJyxTW4caOIpAT3oh/BV8RFR6MDp/lUEsouRjrtfKndYHRLSns85wkW+ssTtzgCgzBgjEP0z2xFhY= 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+110026+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 1698223540747600.2921018154799; Wed, 25 Oct 2023 01:45:40 -0700 (PDT) Return-Path: DKIM-Signature: a=rsa-sha256; bh=T+Ncwcu/jj2jFuwJpC4MmkKLKUebMnJNanrhmMCNav4=; c=relaxed/simple; d=groups.io; h=From:To:Cc:Subject:Date:Message-Id: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=1698223540; v=1; b=xP4DefLIe4DVxSGyvy8dFugUwtis40Y2HyiQGTMTF3QVgVZQzeN8kmNXN0/PmICPVS12c83u epc5JBe7FIxpLYEkFyhF2ZG44jkr4og8NLZHjGxn/jLsSZk6mLAyoKTihkE58gJuGPNtBm7DTWS TtFiGoGwdJLUzj1CQalEuwJE= X-Received: by 127.0.0.2 with SMTP id 78zLYY1788612xggR2ppkY65; Wed, 25 Oct 2023 01:45:40 -0700 X-Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by mx.groups.io with SMTP id smtpd.web11.39237.1698223539824194575 for ; Wed, 25 Oct 2023 01:45:39 -0700 X-IronPort-AV: E=McAfee;i="6600,9927,10873"; a="391133443" X-IronPort-AV: E=Sophos;i="6.03,250,1694761200"; d="scan'208";a="391133443" X-Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Oct 2023 01:45:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.03,250,1694761200"; d="scan'208";a="6461798" X-Received: from shwdeopenlab705.ccr.corp.intel.com ([10.239.55.100]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Oct 2023 01:44:17 -0700 From: "Yuanhao Xie" To: devel@edk2.groups.io Cc: Eric Dong , Chasel Chiu , Nate DeSimone , Isaac Oram , Liming Gao , Yuanhao Xie Subject: [edk2-devel] [edk2-platforms V2] MinPlatformPkg:Remove memory cache setting for memory under 1MB Date: Wed, 25 Oct 2023 16:45:21 +0800 Message-Id: <20231025084521.2526-1-yuanhao.xie@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,yuanhao.xie@intel.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: xU8Z8vsGAWuhtdz5K0JG7we7x1787277AA= Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1698223542819100003 Content-Type: text/plain; charset="utf-8" With the fact that CSM is not supported, the request is to remove the cache setting for memory under 1MB. This can be treated as the missing part of legacy CSM deprecation. This patch only set the 00000 to 9FFFF and C0000 to FFFFF as Write Back. A0000-BFFFF range is still uncacheable for VGA. Reviewed-by: Eric Dong Cc: Chasel Chiu Cc: Nate DeSimone Cc: Isaac Oram Cc: Liming Gao Cc: Eric Dong Signed-off-by: Yuanhao Xie --- Platform/Intel/MinPlatformPkg/Library/SetCacheMtrrLib/SetCacheMtrrLib.c | = 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Platform/Intel/MinPlatformPkg/Library/SetCacheMtrrLib/SetCache= MtrrLib.c b/Platform/Intel/MinPlatformPkg/Library/SetCacheMtrrLib/SetCacheM= trrLib.c index 05728275a5..38a8db6b3f 100644 --- a/Platform/Intel/MinPlatformPkg/Library/SetCacheMtrrLib/SetCacheMtrrLib= .c +++ b/Platform/Intel/MinPlatformPkg/Library/SetCacheMtrrLib/SetCacheMtrrLib= .c @@ -245,7 +245,7 @@ SetCacheMtrrAfterEndOfPei ( &MtrrSetting, 0xC0000, 0x40000, - CacheWriteProtected + CacheWriteBack ); ASSERT_EFI_ERROR ( Status); =20 --=20 2.36.1.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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