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 B3448C43217 for ; Mon, 14 Nov 2022 13:19:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237594AbiKNNTx (ORCPT ); Mon, 14 Nov 2022 08:19:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236779AbiKNNTe (ORCPT ); Mon, 14 Nov 2022 08:19:34 -0500 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9F222AE2F for ; Mon, 14 Nov 2022 05:19:06 -0800 (PST) Received: by mail-ej1-x629.google.com with SMTP id y14so28228760ejd.9 for ; Mon, 14 Nov 2022 05:19:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:from:to:cc:subject:date:message-id:reply-to; bh=wptfyIK6cGXWafJRIE0+wKYEiUfT/C8Cp/88f6SDnJI=; b=KN2CymL7WFkKiYXpoBmRpQWQXiDY44c7m6Y6yAFKT1NlHPmEkO6jZ5Yupm7GugU/Wo ThOL9DjjqdaifsHu4IQ8e+xX70/vP0uafrmaoWSB2xHm25+2eT0nAg+QDEDjmqkf3sJe JkJuIjrYCBcLhpIvAHy+6j27qnBKw3LG+ys7M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wptfyIK6cGXWafJRIE0+wKYEiUfT/C8Cp/88f6SDnJI=; b=A8bxKEip5JwpQ3ptRJzy3AKw3tEVKQmtbtIhUlkrE4bS8jhwZKr5YDLdVteqvgCze2 cPFgfTQGk9esPnXJVeAPPfnVz+Z3mTEW8hjxXCOyJHgt297cKuBmB8VVl4JHnu85pBcD QjN1cyeXUvKQnKfrGOeMMyXGMbUAHPZFrXVCLYf9N9ZJxrUZKX8+z1SI18sUlOXAGFt/ DlMjAFtJ2tJsICu/Hi0YPMTID3bDS0kgnBr6C+GlR729erL7Ri0zHr9hD/0YzGyapEsn ZOfN9oejoPtplkAXi2gsbkJ/v0B4bYPAsjg5m6wOj0csa7e7GpmwTKDClIA6Dp8KWH1L NBWw== X-Gm-Message-State: ANoB5pkmPUcEVcgxZh0hETyZAFfkiN48xjmNwrqAtyw1FvJCtrJgRfSy IF2QqfyqHQPJIEv42n/UAFRdCw== X-Google-Smtp-Source: AA0mqf5XAHfO6upM08Nlwr28NvlYYCOvH4cs7UB4GYrPptHd4Wu7+zqYlEwJB7EXRhdzfIqrEule5A== X-Received: by 2002:a17:906:edb7:b0:78d:b712:fe99 with SMTP id sa23-20020a170906edb700b0078db712fe99mr10318362ejb.462.1668431945090; Mon, 14 Nov 2022 05:19:05 -0800 (PST) Received: from alco.roam.corp.google.com ([2620:0:1059:10:c205:5c4e:7456:c8cc]) by smtp.gmail.com with ESMTPSA id g13-20020a50ec0d000000b0045b3853c4b7sm4802061edr.51.2022.11.14.05.19.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Nov 2022 05:19:04 -0800 (PST) Subject: [PATCH v1 0/2] kexec: Add new toogle to disable kexec_reboot MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-b4-tracking: H4sIAC1AcmMC/w3LQQqEMAwF0KtI1hMwVVDnNm39arB0oNFBEO9ul2/xbjIUhdG3uangr6a/XCGfhu Lm8wrWuZpc65yI9Dyr+ZDAOy5ELjAcLFMYIDJ03bhQncEbOBSf41ZvPlN6nhcDB99zagAAAA== From: Ricardo Ribalda Date: Mon, 14 Nov 2022 14:18:37 +0100 Message-Id: <20221114-disable-kexec-reset-v1-0-fb51d20cf871@chromium.org> To: Eric Biederman , Jonathan Corbet Cc: Sergey Senozhatsky , linux-kernel@vger.kernel.org, kexec@lists.infradead.org, Ross Zwisler , linux-doc@vger.kernel.org, "Joel Fernandes (Google)" , Steven Rostedt , Ricardo Ribalda X-Mailer: b4 0.11.0-dev-d93f8 X-Developer-Signature: v=1; a=openpgp-sha256; l=1244; i=ribalda@chromium.org; h=from:subject:message-id; bh=JfIkpVZ3TPV8FpLGteqEp65kTEUP1lPgQkWDBE88DK8=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBjckA4FzdwiaV6YR2rAuNRu5qRVsvHdkr8TBqmbGPm CtXfY96JAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCY3JAOAAKCRDRN9E+zzrEiG2XD/ 9E6yRRi3EQWhNK8uXRmHb1MCO0lvuapyhVEgfn84IwmzoXZD0pthUawboSbdfqV2aCv95D7xDPGaom Tkf8PBHwsFpeOBEWQ/jYmYr4+LqnKjvY3DJsWQPJTXM7VQ9EdTGBL5ZBfqHMmeGVvrUQB2dSWgqYcF T3kFrEMBraghVcFnOA3223Ba2sSuonthRcaotPb+xSYYUMn/rkJXpdplql6892hC+w9L1sFDARUx7C tvhRMa/vmLgAgd1tGn2TU7gPPutTUG7Jx0TAN04IZ97QZdyE7h7vKyskbiu0cmnhILdGFpomAVfnpW xGV4XIGWqmIwc8x3v9jMckXWb23Av3Wfu3CWoPPXPKpajj9Vdz1C4kCQb7gTq2RQK0iRgIv1F1jUZ4 5M8T38wr+Wv5+YbShJzRhR53LUtmNRBLjDlZ6x7FpUpTth5w3vyn4s/kzukKpAepAWp96lfjhoZ/hV 8By8SfhB73wVspAP3X4fKz7Dn5Ghpgo6V0ww1ERk4z4Wp4Xzh1W0q3FF1jfIEIyMokns/CxFNKSD+b Fuz/sLCrcNriPFsUkaXZX5n2KLveB+bOEoO0sBHzL+UhDyPkVYF3kKKZQw/O/TjeF6ybBcFuq1jiuI ovH518DkpySdiiVfyHPxGcCI72WSIEGqwvrjoE0cFpEAPFpQtq3RQTTNU+DA== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Kexec lets the system administratior replace the current kernel with a different one. Add a new toggle to limit that replacement to system crashes only. To: Jonathan Corbet To: Eric Biederman Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kexec@lists.infradead.org Cc: Joel Fernandes (Google) Cc: Sergey Senozhatsky Cc: Steven Rostedt Cc: Ross Zwisler Signed-off-by: Ricardo Ribalda --- Ricardo Ribalda (2): Documentation: sysctl: Correct kexec_load_disabled kexec: Introduce kexec_reboot_disabled Documentation/admin-guide/sysctl/kernel.rst | 18 +++++++++++++++--- include/linux/kexec.h | 1 + kernel/kexec.c | 4 ++++ kernel/kexec_core.c | 13 ++++++++++++- kernel/kexec_file.c | 5 +++++ 5 files changed, 37 insertions(+), 4 deletions(-) --- base-commit: 094226ad94f471a9f19e8f8e7140a09c2625abaa change-id: 20221114-disable-kexec-reset-19b7e117338f Best regards, -- Ricardo Ribalda