Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934157Ab3HHIzi (ORCPT ); Thu, 8 Aug 2013 04:55:38 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:28553 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S934042Ab3HHIzd (ORCPT ); Thu, 8 Aug 2013 04:55:33 -0400 X-IronPort-AV: E=Sophos;i="4.89,837,1367942400"; d="scan'208";a="8153190" From: Tang Chen To: robert.moore@intel.com, lv.zheng@intel.com, rjw@sisk.pl, lenb@kernel.org, tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com, akpm@linux-foundation.org, tj@kernel.org, trenn@suse.de, yinghai@kernel.org, jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com, mgorman@suse.de, minchan@kernel.org, mina86@mina86.com, gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com, lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com, prarit@redhat.com, zhangyanfei@cn.fujitsu.com, yanghy@cn.fujitsu.com Cc: x86@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-acpi@vger.kernel.org Subject: [PATCH part3 0/5] acpi, acpica: Initialize acpi_gbl_root_table_list earlier and override it later. Date: Thu, 8 Aug 2013 16:54:01 +0800 Message-Id: <1375952046-28490-1-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: git-send-email 1.7.11.7 X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/08 16:54:04, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/08 16:54:05, Serialize complete at 2013/08/08 16:54:05 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2346 Lines: 52 In order to prevent bootmem allocator (memblock) from allocating hotpluggable memory for the kernel, we need to obtain SRAT earlier. In part1 patch-set, we have split acpi_gbl_root_table_list initialization into two steps: install and override. This patch-set will do install step earlier. This will help us to find SRAT provided by firmware earlier in later patches. The current kernel looks like this: setup_arch() |->acpi_initrd_override() /* Find all tables specified by users in initrd, | and store them in acpi_tables_addr array. */ |...... |->acpi_boot_table_init() /* Find all tables in firmware and install them into acpi_gbl_root_table_list. Check acpi_tables_addr, if any table needs to be overrided, override it. */ After this patch-set, the kernel will look like this: setup_arch() |->early_acpi_boot_table_init() /* Find all tables in firmware and install them | into acpi_gbl_root_table_list. No override. */ | |->acpi_initrd_override() /* Find all tables specified by users in initrd, | and store them in acpi_tables_addr array. */ |...... |->acpi_boot_table_init() /* Check acpi_tables_addr, if any table needs to be overrided, override it. */ Tang Chen (5): x86, acpi: Call two new functions instead of acpi_initialize_tables() in acpi_table_init(). x86, acpi: Split acpi_table_init() into two parts. x86, acpi: Rename check_multiple_madt() and make it global. x86, acpi: Split acpi_boot_table_init() into two parts. x86, acpi: Initialize acpi golbal root table list earlier. arch/x86/kernel/acpi/boot.c | 32 ++++++++++++++++++++------------ arch/x86/kernel/setup.c | 8 +++++++- drivers/acpi/tables.c | 29 +++++++++++++++++++++++------ include/acpi/acpixf.h | 4 ++++ include/linux/acpi.h | 4 ++++ 5 files changed, 58 insertions(+), 19 deletions(-) -- 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/