From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tang Chen 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> Return-path: Sender: owner-linux-mm@kvack.org 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 List-Id: linux-acpi@vger.kernel.org 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, 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