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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2612DC4332F for ; Tue, 20 Dec 2022 22:06:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233010AbiLTWGN (ORCPT ); Tue, 20 Dec 2022 17:06:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232913AbiLTWGK (ORCPT ); Tue, 20 Dec 2022 17:06:10 -0500 Received: from mail-ej1-x634.google.com (mail-ej1-x634.google.com [IPv6:2a00:1450:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF7391DDDF for ; Tue, 20 Dec 2022 14:06:07 -0800 (PST) Received: by mail-ej1-x634.google.com with SMTP id qk9so32572520ejc.3 for ; Tue, 20 Dec 2022 14:06:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=xv7lgqcsWR7csyQW/ua9GbEMjmdKQM2eL6DIBrKZNHc=; b=QZyYvSYS/5R/0vxSGWLo/6TrG71If7NC5DtCubDinMXdIvsAOTSsTYPjceSC5lhJec BXd6ndGzKfOPGsXk7IAnWkD2+Jg9cIRiiS2AMo0PWk/H6f73e5vb/qkVYFuzoPnK9/Es mlmynVTyGNzumcJRS3bL1ypHkrfyanKKrHzs4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=xv7lgqcsWR7csyQW/ua9GbEMjmdKQM2eL6DIBrKZNHc=; b=Bxj6SWvddy7WnbLmkEZJKCraYkBgvCREUxlN4npmfu8/qGCX1DaG69sZCLSSZ+qcGQ fFsREQJ/T+esTYaIQOaKOWSVn2xfIWGBAMliu5bklIDzOvRpi1L+2U65qtlyvUVqtjYp xrlaIHMiQOu/et1dJAUjIwWdmsIJfD35Lc1aexXAfV2QwUrzrN8yjSBjy4dh0sCQwcmC cZtMYX8pBs6NQrPLYz7tWqGMaG+UOfWAqYIR99T7hLrmWA9cscZ3trEzDk34oEsvfMa0 8zPnyw0VKYnXHH0hi9NMedKQni/RFOCpfLHBm7wadSDsRflksjuNE1RPBae9mdZco9Gr K7Zg== X-Gm-Message-State: ANoB5pkskmjy4noVOc6xrs23sZtfYbGiL6KNYy1v4yBVCwrPd1jTLsJ2 Wgc9LgfNeUIurREzZdVvvYJzbw== X-Google-Smtp-Source: AA0mqf6zzWn0WikLfWEQwe6zkmxGlwUAYlamwtrtvXIvvVUd2sMlv7GgspWqSrhcUGkNHsLlZZPwFA== X-Received: by 2002:a17:906:f6d7:b0:7c0:bf7c:19f4 with SMTP id jo23-20020a170906f6d700b007c0bf7c19f4mr40561370ejb.74.1671573966509; Tue, 20 Dec 2022 14:06:06 -0800 (PST) Received: from alco.roam.corp.google.com (80.71.134.83.ipv4.parknet.dk. [80.71.134.83]) by smtp.gmail.com with ESMTPSA id ku13-20020a170907788d00b00837ac146a53sm1175492ejc.23.2022.12.20.14.06.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Dec 2022 14:06:06 -0800 (PST) From: Ricardo Ribalda Date: Tue, 20 Dec 2022 23:05:43 +0100 Subject: [PATCH v3 1/3] Documentation: sysctl: Correct kexec_load_disabled MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20221114-disable-kexec-reset-v3-1-4ef4e929adf6@chromium.org> References: <20221114-disable-kexec-reset-v3-0-4ef4e929adf6@chromium.org> In-Reply-To: <20221114-disable-kexec-reset-v3-0-4ef4e929adf6@chromium.org> To: Philipp Rudo , Eric Biederman , Jonathan Corbet , "Guilherme G. Piccoli" Cc: linux-doc@vger.kernel.org, Sergey Senozhatsky , Steven Rostedt , linux-kernel@vger.kernel.org, "Joel Fernandes (Google)" , Ricardo Ribalda , Ross Zwisler , kexec@lists.infradead.org X-Mailer: b4 0.11.0-dev-696ae X-Developer-Signature: v=1; a=openpgp-sha256; l=1258; i=ribalda@chromium.org; h=from:subject:message-id; bh=U6cVA0f3MVv7jTHbprLKEENRfx9C5MeH7N8/eIFjhzo=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBjojHIpdmcVeMVxZ7UQR/ZxrK0wjocsFOqbUXV1Pzf kKjKvmWJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCY6IxyAAKCRDRN9E+zzrEiFfID/ 9z8ZdKo6lWAEJ3T0FZH9P5dUY7+G8f57r2NUYkbXfSZyBnKZrzNJO/zzg6qs0zVpVhq0Q6tya9Lr5n i9pKqqZzciEhZ5dxXjxdUSdA+bnNgCHYoV19PtdKclGJWT3ZlunTNW6b+m2ecsEEwry0nzYTY8tfmX 0Z2upPGKphHkKHuehW+ZatYoiD9ryoeqcsUa/ISkFK3J2H5tlKeqTK2uJwxEAyYJewvSydZUCPvHAv 8ZUh4us+RWedvK9hUg+79yijwSID58bKxu7aAsRdhMef+vRkERdD4hYDEHoCFVoO0BytlMagDtbC55 7p2OA6GEjZ2rjT41K6fO1h9gZcScdk3oYi4mdeAFZz81BpO237UWXl3ONMimGUS8nOhYkULDJ/gL+i PRRgDg3X/pcbA/EwQCjr0sjvCIFH7+kUYsG5ugtmyoWYS3v6xyIsgwkcN1vapyrWDtiwqQvZgZAnO+ zaiPo0WMlJ8U16DM2A0hxHsvqQVtUq4/3ZOti2PXiwSjbF9Hkcs+huWx6+r9ZIpDU4cS6DRcpi6JWj GXAjtzK3OYQmK4Tfy91pBoGNKL15xLeJ7zbR+t9Llz1b4P5Yr7pbW0Niku63bJ8EhyWZqUSwSEUey1 Z8QP37ORLoJzuJVT/YNbvtLZOzvKP3bWpLxPZ6Ax6fx4bMYhgraJntD8MAJA== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org kexec_load_disabled affects both ``kexec_load`` and ``kexec_file_load`` syscalls. Make it explicit. Signed-off-by: Ricardo Ribalda --- Documentation/admin-guide/sysctl/kernel.rst | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 98d1b198b2b4..97394bd9d065 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -450,9 +450,10 @@ this allows system administrators to override the kexec_load_disabled =================== -A toggle indicating if the ``kexec_load`` syscall has been disabled. -This value defaults to 0 (false: ``kexec_load`` enabled), but can be -set to 1 (true: ``kexec_load`` disabled). +A toggle indicating if the syscalls ``kexec_load`` and +``kexec_file_load`` have been disabled. +This value defaults to 0 (false: ``kexec_*load`` enabled), but can be +set to 1 (true: ``kexec_*load`` disabled). Once true, kexec can no longer be used, and the toggle cannot be set back to false. This allows a kexec image to be loaded before disabling the syscall, -- 2.39.0.314.g84b9a713c41-goog-b4-0.11.0-dev-696ae