Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757785Ab2K0BPF (ORCPT ); Mon, 26 Nov 2012 20:15:05 -0500 Received: from szxga01-in.huawei.com ([119.145.14.64]:36192 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757702Ab2K0BPC (ORCPT ); Mon, 26 Nov 2012 20:15:02 -0500 Message-ID: <50B41395.60808@huawei.com> Date: Tue, 27 Nov 2012 09:12:53 +0800 From: Jiang Liu User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: "H. Peter Anvin" CC: Tang Chen , wujianguo , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v2 5/5] page_alloc: Bootmem limit with movablecore_map References: <1353667445-7593-1-git-send-email-tangchen@cn.fujitsu.com> <1353667445-7593-6-git-send-email-tangchen@cn.fujitsu.com> <50B36354.7040501@gmail.com> <50B36B54.7050506@cn.fujitsu.com> <50B38F69.6020902@zytor.com> In-Reply-To: <50B38F69.6020902@zytor.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.108.108.229] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1393 Lines: 42 On 2012-11-26 23:48, H. Peter Anvin wrote: > On 11/26/2012 05:15 AM, Tang Chen wrote: >> >> Hi Wu, >> >> That is really a problem. And, before numa memory got initialized, >> memblock subsystem would be used to allocate memory. I didn't find any >> approach that could fully address it when I making the patches. There >> always be risk that memblock allocates memory on ZONE_MOVABLE. I think >> we can only do our best to prevent it from happening. >> >> Your patch is very helpful. And after a shot look at the code, it seems >> that acpi_numa_memory_affinity_init() is an architecture dependent >> function. Could we do this somewhere which is not depending on the >> architecture ? >> > > The movable memory should be classified as a non-RAM type in memblock, > that way we will not allocate from it early on. Hi Peter, I have tried to reserved movable memory from bootmem allocator, but the ACPICA subsystem is initialized later than setting up movable zone. So still trying to figure out a way to setup/reserve movable zones according to information from static ACPI tables such as SRAT/MPST etc. Regards! Gerry > > -hpa > > > . > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/