Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758301Ab3HBJQR (ORCPT ); Fri, 2 Aug 2013 05:16:17 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:62165 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1757914Ab3HBJQK (ORCPT ); Fri, 2 Aug 2013 05:16:10 -0400 X-IronPort-AV: E=Sophos;i="4.89,800,1367942400"; d="scan'208";a="8098114" 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 v2 RESEND 07/18] x86, ACPI: Also initialize signature and length when parsing root table. Date: Fri, 2 Aug 2013 17:14:26 +0800 Message-Id: <1375434877-20704-8-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: git-send-email 1.7.10.1 In-Reply-To: <1375434877-20704-1-git-send-email-tangchen@cn.fujitsu.com> References: <1375434877-20704-1-git-send-email-tangchen@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/02 17:14:47, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/02 17:14:52, Serialize complete at 2013/08/02 17:14:52 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2130 Lines: 61 Besides the phys addr of the acpi tables, it will be very convenient if we also have the signature of each table in acpi_gbl_root_table_list at early time. We can find SRAT easily by comparing the signature. This patch alse record signature and some other info in acpi_gbl_root_table_list at early time. Signed-off-by: Tang Chen Reviewed-by: Zhang Yanfei --- drivers/acpi/acpica/tbutils.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index e3621cf..af942fe 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -438,6 +438,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address) u32 i; u32 table_count; struct acpi_table_header *table; + struct acpi_table_desc *table_desc; acpi_physical_address address; acpi_physical_address uninitialized_var(rsdt_address); u32 length; @@ -577,6 +578,27 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address) */ acpi_os_unmap_memory(table, length); + /* + * Also initialize the table entries here, so that later we can use them + * to find SRAT at very eraly time to reserve hotpluggable memory. + */ + for (i = 2; i < acpi_gbl_root_table_list.current_table_count; i++) { + table = acpi_os_map_memory( + acpi_gbl_root_table_list.tables[i].address, + sizeof(struct acpi_table_header)); + if (!table) + return_ACPI_STATUS(AE_NO_MEMORY); + + table_desc = &acpi_gbl_root_table_list.tables[i]; + + table_desc->pointer = NULL; + table_desc->length = table->length; + table_desc->flags = ACPI_TABLE_ORIGIN_MAPPED; + ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); + + acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); + } + return_ACPI_STATUS(AE_OK); } -- 1.7.1 -- 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/