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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B8C8C02194 for ; Fri, 7 Feb 2025 00:29:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 65903280002; Thu, 6 Feb 2025 19:29:45 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 608DE280001; Thu, 6 Feb 2025 19:29:45 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4F74B280002; Thu, 6 Feb 2025 19:29:45 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 38713280001 for ; Thu, 6 Feb 2025 19:29:45 -0500 (EST) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id AC231160979 for ; Fri, 7 Feb 2025 00:29:44 +0000 (UTC) X-FDA: 83091265488.03.C5B5735 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf24.hostedemail.com (Postfix) with ESMTP id DBA2F180007 for ; Fri, 7 Feb 2025 00:29:42 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=cH6Wfmxn; spf=pass (imf24.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1738888183; h=from:from:sender: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:dkim-signature; bh=+sartwbMLAd82CyHAx3E4ga7ShC8eqpPTOdDBwL+lAo=; b=GK0lASytSVstPJ3oq9XxrRaK/ARY3v0VE5WkRVHiCcndHdhMLxj1RB5NVDHyZUJocXOxvZ cbkTaTCudYxe2OW47oSPeroZDQ8/6NyfJTThzpAl5JkHj0Vp3ZA6RoMUCT25DEeIDjCaW9 Ma86LaBgRNI+vaXuJUgYcUoZe4Nn1Fk= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=cH6Wfmxn; spf=pass (imf24.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1738888183; a=rsa-sha256; cv=none; b=I0NTaE+Ix0XDFdaizlSn6WHpIX4pA7XLcMgAGtVIvOM8q/GhA/B51A9rxC1gyjS+TiDega e/a6S1ukvGovnxANUunSnPPaUhCCHNfF7PuOZ8RhNP0x74g37COxUApAKPTplGlaidqylO zUUXMQY5U9ILfB33Oi0lLEsyYFXfRcw= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id BFC255C60B6; Fri, 7 Feb 2025 00:29:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 09692C4CEDF; Fri, 7 Feb 2025 00:29:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1738888181; bh=394j8Z0b6091bH8cpo4/leUwPDluUyEIe29eznp9v/Y=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cH6WfmxnF52p9Zequ1wu7UNwiFQG9Q9DFgHs3+QDdI63nHyM6sfGRF6ORytziBHBG 1svUtzspmlPno7QIYJtnR9zgKZPtG9f9VRRcOxc9zMOT1pNOcS0MkqJE4BtWRzysLo MVYoEEfJiWjb8IfK5tW9plqHYJnc6c1PwQKhrUMc= Date: Thu, 6 Feb 2025 16:29:39 -0800 From: Andrew Morton To: Mike Rapoport Cc: linux-kernel@vger.kernel.org, Alexander Graf , Andy Lutomirski , Anthony Yznaga , Arnd Bergmann , Ashish Kalra , Benjamin Herrenschmidt , Borislav Petkov , Catalin Marinas , Dave Hansen , David Woodhouse , Eric Biederman , Ingo Molnar , James Gowans , Jonathan Corbet , Krzysztof Kozlowski , Mark Rutland , Paolo Bonzini , Pasha Tatashin , "H. Peter Anvin" , Peter Zijlstra , Pratyush Yadav , Rob Herring , Rob Herring , Saravana Kannan , Stanislav Kinsburskii , Steven Rostedt , Thomas Gleixner , Tom Lendacky , Usama Arif , Will Deacon , devicetree@vger.kernel.org, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org Subject: Re: [PATCH v4 00/14] kexec: introduce Kexec HandOver (KHO) Message-Id: <20250206162939.a1f86fb835f1eeb7ed73ff1c@linux-foundation.org> In-Reply-To: <20250206132754.2596694-1-rppt@kernel.org> References: <20250206132754.2596694-1-rppt@kernel.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: DBA2F180007 X-Stat-Signature: jpkr7gix7i4bp5pn71gxtmadhqxqkn66 X-Rspam-User: X-HE-Tag: 1738888182-871194 X-HE-Meta: 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 bVmqa0zT dQNjE3CoNnyXPp/TxleVyDFMu4X3BjXbsHtZEf/AzvUfPZ+91fr/vruw9GhnSvjKsL1xCfDXXHVM3QWKpElE/LTA60jFHgxdx7bU/oKok8XqHlOObXgXorIpqwJIImMcOvhXoxlmOaGff0S8EgD4nmbnYH+XWZ3l6RwW6EKB669IJB5lonRimHlpYg6tyXhSkOoE2MS6ydY8cbidegCD0rhVKy0T/Q9ZcwMjYM4cyrtUy8I4NqTUHOk5I3Smfel9z29p2xUAzaxfqXKXZlLKYMur4Y2p/LJMdWKGsPYRma20Z0lQj6Fd//OEEdi5nxj7ayqg+q1AYV7znbOHrGOsGqj5EfWOfwcIW27CbokyuU4mrS46e0XQTMZPOcQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 6 Feb 2025 15:27:40 +0200 Mike Rapoport wrote: > This a next version of Alex's "kexec: Allow preservation of ftrace buffers" > series (https://lore.kernel.org/all/20240117144704.602-1-graf@amazon.com), > just to make things simpler instead of ftrace we decided to preserve > "reserve_mem" regions. > > The patches are also available in git: > https://git.kernel.org/rppt/h/kho/v4 > > > Kexec today considers itself purely a boot loader: When we enter the new > kernel, any state the previous kernel left behind is irrelevant and the > new kernel reinitializes the system. I tossed this into mm.git for some testing and exposure. What merge path are you anticipating? Review activity seems pretty thin thus far?