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 C3748C02192 for ; Fri, 7 Feb 2025 08:07:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 25960280002; Fri, 7 Feb 2025 03:07:05 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 208ED280001; Fri, 7 Feb 2025 03:07:05 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0D130280002; Fri, 7 Feb 2025 03:07:05 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id E2F88280001 for ; Fri, 7 Feb 2025 03:07:04 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 8BAFE1C9366 for ; Fri, 7 Feb 2025 08:07:04 +0000 (UTC) X-FDA: 83092417968.14.677709D Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by imf02.hostedemail.com (Postfix) with ESMTP id F05A580005 for ; Fri, 7 Feb 2025 08:07:02 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=N9hGFt1M; spf=pass (imf02.hostedemail.com: domain of rppt@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1738915623; a=rsa-sha256; cv=none; b=frKqojjqojzdY/321m1buyKw6UkJh2DXPJa0AhbtqtA+Zach/+FKGiJxMTPNL53idf0odt T6InWYMuAO06Lh1bIRedV/EywR9oL50rxJRyBtZ1XClaN4gueExFRk6s5yCc541448i/Rv cnEjI5fmM6dD2fBbp/iioQfrk2CY9tA= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=N9hGFt1M; spf=pass (imf02.hostedemail.com: domain of rppt@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1738915623; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=p3nkfxSaNeN7hJYI9UBbIfRFZwlZD8sEoPkfxHM5WLE=; b=UxLmuc+91l+5PHcnnemCZ2zM7Ie1ZLc+RV5SnUyhOxf2HjmgZTwQEXNrJaggyy8uZJe/7E G2QHB6a70qlkoYLrwdDn1pzF5gtSRhRHgHomgugJ3UOHTtvBsZlaaJF3BDI0ywhKFQ/Gh2 Ot2o/3Lbw3/j66Vn/gD8wHKMOnPuleg= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id F3EECA4289D; Fri, 7 Feb 2025 08:05:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C3BEC4CED1; Fri, 7 Feb 2025 08:06:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738915621; bh=gmvjh4dkLXQWB/aNPOCFxhvy4MCVdZfnnTa23d2Vqx4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=N9hGFt1MT9MudOB8G3xhPsgVkPL13CsGiEUsLxyCU38gOEui2kZK2TRDIJuOwNn9d 3LIB+f8dOdcZerYT7pIiLFGBBv3bhQdSSBnOKrJ3b1XwzaZvoXfU1qYQIWj0ngmh69 p//fwX1B1vzkSXX3A5dH7nIbzFPmXcKnMSPSs5YWDWVpC1BuLcz0KBpWZZXW+CkvwE UObo9g70YkW+RiyeycGMCSps8itwC4ifzY34sO99kkNeTyp5bijklQEj0VbqEndkq5 ZKExFJOSeC4i1Y+VcMCFjWcQ06zZUJ33AFWJ1Q88KJo74WN355g5NTlF4Nz5ZJaFaH CKchBYGyDprFw== Date: Fri, 7 Feb 2025 10:06:41 +0200 From: Mike Rapoport To: Andrew Morton 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: References: <20250206132754.2596694-1-rppt@kernel.org> <20250206162939.a1f86fb835f1eeb7ed73ff1c@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250206162939.a1f86fb835f1eeb7ed73ff1c@linux-foundation.org> X-Rspamd-Queue-Id: F05A580005 X-Stat-Signature: axmn5g9iukwxqymme5juwdg7rq5p5nri X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1738915622-147956 X-HE-Meta: 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 vKji/lUj 4WiHuoGshLW7uGkrQq6nsZoWDJjmoy+XFS6c3Mk5KZIUCikZe/CTu0KufHqXm0Fs1sdWUTer0v7ad8el6adNbDD9Z0T5CWSzregfIl3VYz64m6C8jwjXRKutfM9IVWQKTK1g3xjOlLp0y7qKlTdkeUd86nZhXquH40KQo1nrbj1SunpTR7oIXSuCd02w3mzXP/WyyU7IsvZ/Yd6cbVf/LoiWCzYuAYk7/pmu7ip9JI90uLyp3+OfJedGSVF5SAOCuoW3IIGiClfYhZJyDFvDjY5+qQvYHq1YgO672CUZanw5AY7H+igjbyc2zL/SjMN7c6Gf4oOAppCnHjZITCGdd8L4wvS52FHIZlSOqbSqc9Dl8DvdZPLPywAk1OQ== 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, Feb 06, 2025 at 04:29:39PM -0800, Andrew Morton wrote: > 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? I think your tree is the most appropriate, but let's wait for Acks from x86 and arm64 people ;-) > Review activity seems pretty thin thus far? Yeah :( Maybe with Pasha's version on top of that we'll have more people reviewing. And here is another fixup for a sparse error kbuild reported: >From e1e34b96b96b89a01ee31be223c8dfc2ce1c4cbe Mon Sep 17 00:00:00 2001 From: "Mike Rapoport (Microsoft)" Date: Fri, 7 Feb 2025 09:55:03 +0200 Subject: [PATCH] kho: make bin_attr_dt_kern static Signed-off-by: Mike Rapoport (Microsoft) --- kernel/kexec_handover.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/kexec_handover.c b/kernel/kexec_handover.c index c26753d613cb..c21ea2a09d47 100644 --- a/kernel/kexec_handover.c +++ b/kernel/kexec_handover.c @@ -258,7 +258,7 @@ static ssize_t dt_read(struct file *file, struct kobject *kobj, return count; } -struct bin_attribute bin_attr_dt_kern = __BIN_ATTR(dt, 0400, dt_read, NULL, 0); +static struct bin_attribute bin_attr_dt_kern = __BIN_ATTR(dt, 0400, dt_read, NULL, 0); static int kho_expose_dt(void *fdt) { -- 2.47.2 -- Sincerely yours, Mike.