From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx116.postini.com [74.125.245.116]) by kanga.kvack.org (Postfix) with SMTP id 1F24C6B0022 for ; Wed, 20 Feb 2013 17:41:37 -0500 (EST) From: "Luck, Tony" Subject: RE: [Bug fix PATCH 1/2] acpi, movablemem_map: Exclude memblock.reserved ranges when parsing SRAT. Date: Wed, 20 Feb 2013 22:41:34 +0000 Message-ID: <3908561D78D1C84285E8C5FCA982C28F1E06B55D@ORSMSX108.amr.corp.intel.com> References: <1361358056-1793-1-git-send-email-tangchen@cn.fujitsu.com> <1361358056-1793-2-git-send-email-tangchen@cn.fujitsu.com> <5124C22B.8030401@cn.fujitsu.com> <5124C32E.1080902@gmail.com> In-Reply-To: <5124C32E.1080902@gmail.com> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Will Huck , Tang Chen Cc: "akpm@linux-foundation.org" , "jiang.liu@huawei.com" , "wujianguo@huawei.com" , "hpa@zytor.com" , "wency@cn.fujitsu.com" , "laijs@cn.fujitsu.com" , "linfeng@cn.fujitsu.com" , "yinghai@kernel.org" , "isimatu.yasuaki@jp.fujitsu.com" , "rob@landley.net" , "kosaki.motohiro@jp.fujitsu.com" , "minchan.kim@gmail.com" , "mgorman@suse.de" , "rientjes@google.com" , "guz.fnst@cn.fujitsu.com" , "rusty@rustcorp.com.au" , "lliubbo@gmail.com" , "jaegeuk.hanse@gmail.com" , "glommer@parallels.com" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" > What's the relationship between e820 map and SRAT? The e820 map (or EFI memory map on some recent systems) provides a list of memory ranges together with usage information (e.g. reserved for BIOS, or available) and attributes (WB cacheable, uncacheable). The SRAT table provides topology information for address ranges. It tells the OS which memory is close to each cpu, and which is more distant. If there are multiple degrees of "distant" then the SLIT table provides a matrix of relative latencies between nodes. -Tony -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org