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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9CF0AC61DB9 for ; Fri, 28 Aug 2026 03:44:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=whpn/jQ/ZPICmR96kW9h0JyF+OMKrcXAKh09CTAM9Tk=; b=z3VAQcftoJJgol7ePfTibwzEg0 DksF3XurVtBZy/8DEotWJlnUzH93qYC/vyf7jSdpJZpsfFdGVlFwlhoSYmPQBK1ZNEzU3KrKDkpCZ DcNbk1MxrJ3+44GwGRE8rRbWScyUiCC3ju+RW33y2YrNdMuuPp9X9LliCt6k8bPtuOtkiuNFGWQwy +aUgxA5vB8yhE5CrH8TGi1mnnuoeVi9VC1FR34SBfArJ33/RsylSNxCXdOBb3DVQRpAVkk6y+KVyk C58KCC8+TKGAhzHZj0O5opO3tPQrTf+FP0PrL0NAwf2aZACly7xY1amZEmEiwcF4om146IxSa8ak9 YQDTyC2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wznVv-000000054hU-0rrg; Fri, 28 Aug 2026 03:44:23 +0000 Received: from mail-wm1-x32c.google.com ([2a00:1450:4864:20::32c]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wznVs-000000054h9-0Ws8 for linux-arm-kernel@lists.infradead.org; Fri, 28 Aug 2026 03:44:21 +0000 Received: by mail-wm1-x32c.google.com with SMTP id 5b1f17b1804b1-4956869750eso2715955e9.2 for ; Thu, 27 Aug 2026 20:44:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1787888658; x=1788493458; darn=lists.infradead.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=whpn/jQ/ZPICmR96kW9h0JyF+OMKrcXAKh09CTAM9Tk=; b=h/sjAI/MEBmqYN570kKBwsQJQxsuASK4v54CvayYfjdwmiYA7W9FQCDL2/Y6GnsZ3f 63lKBkiqKGZv9P/d7sgJ5MqrPwizut3Zyk00lBh95yudXL6lr5Y0Rr81/LyxLf8lRb2f f8hYqfeVIBkg3kfGa+p39Q87zq5cMrLBK8OHViZd3m9pMT+8puyKMxGHbcD1WU24zN9M eYLft92cE54XO5nKWYQZXkMgShZ2YxJ/0k0kaC+IuCkMa8h/rL5AT4kJCvJPPZ1wMET7 CM5d3EeG60XP97F6ntAhIEkPiBQQwxdzyPOBQYHFdlsqI5BWlPez6jCOEe//Zk6LpDg+ HepA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787888658; x=1788493458; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=whpn/jQ/ZPICmR96kW9h0JyF+OMKrcXAKh09CTAM9Tk=; b=hVj9DohYIDFMIQSB6nUFX45VqZU6jpEfsjeDA+UAa0Ft3oF7gAEpMykDPEdeHcJnJ3 nTMCt+S7HUuNvNHGG0LlyhvH04yW4qy/6/V+tZG8PFDbVJQuFsDgPIS31LJd87/bqguV 5Fz8oA2/o2/+RZg5EeQ9bEoAlPWiP9bcKh3ckXAB8tAWhQpIoC4MJokClUN2EfIUYoWq 70rZGJMHagVXLDnM4UnROiJOvfe7zU3gLhp/7Kv+BKQnL9eT6aM9oXOrS8h71dHrcfCp NoNGK83zdcARl0wIKco5aS5OUCnR2xVe32CDC45B3v254zP91XmiWWLcVHSM6omFMB+f 75IQ== X-Forwarded-Encrypted: i=1; AHgh+RpFLhAA3VngyqM8geYG+MUeFYEZHFwFIl9DQr8k91JE0AfcyBprC6OcbAGwf2WK9LrTtsZcDsGFsO/dTdq3GlX5@lists.infradead.org X-Gm-Message-State: AFuF++kFrnsmWjV9IwFarATphDQMicIeBK7qdnWfe7K3IyV4FSQd/sej QqbapLJUuielCDjonKX61RMy2rUvu0Bbzn6FIx4ORM9osAFcVpn9Doqj X-Gm-Gg: AR+sD10zaRG33qkMCSgKxgV+xGeGVpoIdQnL53qiPGGdCLWhy7ua5tJv/u8OjJcq4/A YMrLJdGPVoyP9x24vqYSU7s7QzU9y25qTPPyQ9Ieb4aBcFMpgKSjgr6AQZjeu5LY8AiPzPJsUvq e2cREbL88cDsVibGImshWOBSohieMC6QQkLJYlDN5CVLJJfrmrH5lp9nyMgnI8rBnBDZs6ajZ6L Vt/HBnuH0NFMbp9mtMpil2hSU8X8yd/4VnoHAhtnE5FgNsByG9UjQsu0E73++ZnPuELjrR34y3+ kr5+pTHJa7utmnFYY89kcrnlw/zD0J/xxGrQcEQQMuY9He0TUek6ihD7LzTqRWNC8wkkD0alGll TeFe8QBoSnO/+UG1o/dvf6AmVS49DGauQTTNBchNAFnz80f+FA5w70AvaCGD0qaasjahgzkgvkh AGMiFG4OX8yM4sB47AELETPlvgnQcRO0p9lTOvkIqsmgTpArDrHUbQ8CNmSt6h0T6xyAr36qmuO rZqBQ2EytWO/V80Tv9iU8yNn4vkDaaVNeZB0FOnnZLIXd+lwkEeUNBSIYUGqXeOc9Pl8tZT6k0V gELvIkNAqbnqUJ56 X-Received: by 2002:a05:600c:a03:b0:499:93b3:91ea with SMTP id 5b1f17b1804b1-49b91c5096dmr41739775e9.15.1787888658041; Thu, 27 Aug 2026 20:44:18 -0700 (PDT) Received: from unknown748F3CBA5068 (dynamic-077-007-099-087.77.7.pool.telefonica.de. [77.7.99.87]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49b963c3c0asm17275445e9.10.2026.08.27.20.44.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2026 20:44:17 -0700 (PDT) Date: Fri, 28 Aug 2026 05:43:45 +0200 From: Karl Mehltretter To: Will Deacon Cc: Catalin Marinas , Mark Rutland , David Hildenbrand , Ryan Roberts , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: mm: Walk page tables with interrupts disabled in show_pte() Message-ID: References: <20260815211316.974-1-kmehltretter@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260827_204420_200272_BD12E6B7 X-CRM114-Status: GOOD ( 11.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Aug 27, 2026 at 03:30:24PM +0100, Will Deacon wrote: > > @@ -151,6 +152,8 @@ static void show_pte(unsigned long addr) > > return; > > } > > > > + guard(irqsave)(); > > + > > pr_alert("%s pgtable: %luk pages, %llu-bit VAs, pgdp=%016lx\n", > > mm == &init_mm ? "swapper" : "user", PAGE_SIZE / SZ_1K, > > vabits_actual, mm_to_pgd_phys(mm)); > > Curious, but why did you add the guard before the print? Good point. No need to cover the print, I'll move it below in v2. Thanks, Karl