From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAB12C432BE for ; Thu, 12 Aug 2021 10:11:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C2E96109D for ; Thu, 12 Aug 2021 10:11:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236215AbhHLKMJ (ORCPT ); Thu, 12 Aug 2021 06:12:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236151AbhHLKKQ (ORCPT ); Thu, 12 Aug 2021 06:10:16 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB399C06179B; Thu, 12 Aug 2021 03:09:45 -0700 (PDT) Date: Thu, 12 Aug 2021 10:09:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1628762984; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EojEC9l2IEqu33hC1E1/r59YGBpO0jV1pcmU2rY27/A=; b=BH6Y4lgJdFbgEH98fcTJF8V7SMEeF0Z9rwMQrH6jEtEi9n8aTFrXmQoauPKFkBz3vsdnTs e9JwncsGhko6J3+/a9smFa2mtXgkADks3uBJXdjRuvZHBK6vTgJ4A7fuMFrLR6ULmdiM4d xF46F5f2j29Ci/UFhKR8f8E+M5Xyex5KN2w9EuJrnSizKnac+TS3vAZXcMXTcgG6dOzSMm cCXLjCFn1eGzb7ojmBcbMI1IJauu1X0JpBU6RX/a8x+E0mVCWSfMv24EZwd5YbO9bHd1Hu LRa/+ISvwGCITC5iHOE+3AdoveLwZuldxEnzx+YyVR9D8j1gNgDYmIzSjiTfLw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1628762984; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EojEC9l2IEqu33hC1E1/r59YGBpO0jV1pcmU2rY27/A=; b=K/C0iZnbVwh+PUVkduI+hp4Pms50x53lCNvlINQXq3pZCBlTKNxfgvfjDzkeAriDTBFR2N JA17qK0E/CiIWzDA== From: "tip-bot2 for Paul Gortmaker" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/misc] x86/reboot: Document the "reboot=pci" option Cc: Paul Gortmaker , Thomas Gleixner , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20210530162447.996461-2-paul.gortmaker@windriver.com> References: <20210530162447.996461-2-paul.gortmaker@windriver.com> MIME-Version: 1.0 Message-ID: <162876298363.395.15945425696843293640.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/misc branch of tip: Commit-ID: 162a5284faf41b2441b8f686f9ac4771c7a8f669 Gitweb: https://git.kernel.org/tip/162a5284faf41b2441b8f686f9ac4771c7a8f669 Author: Paul Gortmaker AuthorDate: Sun, 30 May 2021 12:24:45 -04:00 Committer: Thomas Gleixner CommitterDate: Thu, 12 Aug 2021 12:06:58 +02:00 x86/reboot: Document the "reboot=pci" option It is mentioned in the top level non-arch specific file but it was overlooked here for x86. Signed-off-by: Paul Gortmaker Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20210530162447.996461-2-paul.gortmaker@windriver.com --- Documentation/x86/x86_64/boot-options.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/x86/x86_64/boot-options.rst b/Documentation/x86/x86_64/boot-options.rst index 5f62b3b..482f3b2 100644 --- a/Documentation/x86/x86_64/boot-options.rst +++ b/Documentation/x86/x86_64/boot-options.rst @@ -126,7 +126,7 @@ Idle loop Rebooting ========= - reboot=b[ios] | t[riple] | k[bd] | a[cpi] | e[fi] [, [w]arm | [c]old] + reboot=b[ios] | t[riple] | k[bd] | a[cpi] | e[fi] | p[ci] [, [w]arm | [c]old] bios Use the CPU reboot vector for warm reset warm @@ -145,6 +145,8 @@ Rebooting Use efi reset_system runtime service. If EFI is not configured or the EFI reset does not work, the reboot path attempts the reset using the keyboard controller. + pci + Use a write to the PCI config space register 0xcf9 to trigger reboot. Using warm reset will be much faster especially on big memory systems because the BIOS will not go through the memory check.