From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751584AbeBBK12 (ORCPT ); Fri, 2 Feb 2018 05:27:28 -0500 Received: from mx01.hxt-semitech.com.96.203.223.in-addr.arpa ([223.203.96.7]:58511 "EHLO barracuda.hxt-semitech.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750795AbeBBK1V (ORCPT ); Fri, 2 Feb 2018 05:27:21 -0500 X-ASG-Debug-ID: 1517567237-093b7e4cf1005f0001-xx1T2L X-Barracuda-Envelope-From: shunyong.yang@hxt-semitech.com From: Yang Shunyong To: CC: , , , Yang Shunyong , Joey Zheng , Wang Dongsheng , Jiang Yutang , Hanjun Guo Subject: [PATCH v3] ACPI / tables: Add IORT to injectable table list Date: Fri, 2 Feb 2018 18:25:38 +0800 X-ASG-Orig-Subj: [PATCH v3] ACPI / tables: Add IORT to injectable table list Message-ID: <1517567138-27283-1-git-send-email-shunyong.yang@hxt-semitech.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.5.21.109] X-ClientProxiedBy: HXTBJIDCEMVIW01.hxtcorp.net (10.128.0.14) To HXTBJIDCEMVIW01.hxtcorp.net (10.128.0.14) X-Barracuda-Connect: localhost[10.128.0.14] X-Barracuda-Start-Time: 1517567237 X-Barracuda-Encrypted: ECDHE-RSA-AES256-SHA X-Barracuda-URL: https://192.168.50.101:443/cgi-mod/mark.cgi X-Barracuda-BRTS-Status: 1 X-Barracuda-Bayes: INNOCENT GLOBAL 0.4972 1.0000 0.0000 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.47508 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Loading IORT table from initrd is used to fix firmware IORT defects. Moreover, it is very useful to debug SMMU node/device probe, MSI allocation, stream id translation and IORT table from firmware. It is also very useful to enable SMMU and devices behind SMMU before firmware is ready. This patch adds ACPI_SIG_IORT to the table, which enables IORT from initrd to override which from firmware. Signed-off-by: Yang Shunyong Cc: Joey Zheng Cc: Wang Dongsheng Cc: Jiang Yutang Cc: Hanjun Guo --- v3: Add more detailed commit message according to Hanjun's suggestion. v2: Change typo ACPI_SIG_PPTT to ACPI_SIG_IORT in commit message. --- drivers/acpi/tables.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 80ce2a7d224b..7bcb66ccccf3 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -456,7 +456,8 @@ static u8 __init acpi_table_checksum(u8 *buffer, u32 length) ACPI_SIG_SLIC, ACPI_SIG_SPCR, ACPI_SIG_SPMI, ACPI_SIG_TCPA, ACPI_SIG_UEFI, ACPI_SIG_WAET, ACPI_SIG_WDAT, ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT, - ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, NULL }; + ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, ACPI_SIG_IORT, + NULL }; #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header) -- 1.8.3.1