Received: by 2002:a25:683:0:0:0:0:0 with SMTP id 125csp2577953ybg; Fri, 5 Jun 2020 18:03:34 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyKPs2lmD+kBNEih1ce1dbRMpux6e+usQQ0CBXAHct2RvrDEoIUwmudfSjAMTtBWxgzpdgb X-Received: by 2002:a17:906:784c:: with SMTP id p12mr11212336ejm.123.1591405414764; Fri, 05 Jun 2020 18:03:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1591405414; cv=none; d=google.com; s=arc-20160816; b=FjF5/l+X9QZ8+nUJELKG7t9R0mVd5UhHcjMtT8K3Hwsl+1nGC35bVTPe0NzCGGpw7j ZVXs32DZrGgEzNhyOXnSztEsfLbi02r7Cw860oEF5U7KoFm1/8CpWCObMSClNOU5q5mS fIjHILnnHsJrml6yhPQPFdvvB19W8afcIh82ahF1zL6O/IUdOFykqT2zvctG0b03IoJd PPnTwwR0G7J+d60EZBisPGGqAsKiu2sLJFUhwVM6IiB1t4wOzRblAHhdFDbdBFAnsFl8 C4ePYvNS1b8wQmhM4HTFmmkUEpICRLa61M+xBqMjSmzMJEQytY2iW59FY0CvL8dKqmV3 xsVQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dkim-signature; bh=pXI8VTFIru1YVs5B3ElGSmT1ju4DyDBZnFr+FcKVu9s=; b=TNnCTMbW8x34kmWPKT/02y5itkllBUSq0z6iRs/ZjMWW1NAnkUp4ScqLBo1iEP31ws 1QXwG8uZ8md1JMCaNZmffkUi2vqLOIY+rzdODa8hpzRZjkdDUoVteVewc3+mR42XziqD JR2+CXNcKOHFoVh8E+QQ8YJNtsGrAY54SIYEvQZaqpZxaICxCPyLTt+Q0EqkyASeyrtG +gksbYRilKiNpedyJf8NxceJgicRSiu7eaDK+PM69fo+8OwkUr0xIxciGHAwQlO8ZAQL y51GITcmU+QFnH70//eu3HlNvui9BQW/mVEOiIUEMYhj0l1iodr/JwmA4e6bxeDqvj8U 7JcQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=y5y+gFTH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id v14si4510432edr.110.2020.06.05.18.03.10; Fri, 05 Jun 2020 18:03:34 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=y5y+gFTH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728491AbgFFBBT (ORCPT + 99 others); Fri, 5 Jun 2020 21:01:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:55676 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726803AbgFFBBS (ORCPT ); Fri, 5 Jun 2020 21:01:18 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BA287206A2; Sat, 6 Jun 2020 01:01:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591405277; bh=Gyeok/N2XeIirYf4qpDfR5nkHdIHhB9yRdTBcnOBxlU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=y5y+gFTH6+kErKJnfOvjHoR2SLZ8cPf/bNZXOh70Hzyk/fNOWUS9ByZnIL+ZJbAqJ BcZ53nV5l0yY0/DAeSCmQWk2k0PBd5PLgjQbkszO7mmt+k8rfNas4U4lgT8o/e+zd9 yR142U/GuFaL+gPPih6t4GsptIpLGBI9xlHXW11c= Date: Fri, 5 Jun 2020 18:01:16 -0700 From: Andrew Morton To: Catalin Marinas Cc: Joerg Roedel , x86@kernel.org, hpa@zytor.com, Dave Hansen , Andy Lutomirski , Peter Zijlstra , rjw@rjwysocki.net, Arnd Bergmann , Steven Rostedt , Vlastimil Babka , Michal Hocko , Matthew Wilcox , Joerg Roedel , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Will Deacon Subject: Re: [PATCH v3 1/7] mm: Add functions to track page directory modifications Message-Id: <20200605180116.196116ea218df55f3252af57@linux-foundation.org> In-Reply-To: <20200605114654.GD31371@gaia> References: <20200515140023.25469-1-joro@8bytes.org> <20200515140023.25469-2-joro@8bytes.org> <20200605100813.GA31371@gaia> <20200605114654.GD31371@gaia> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 5 Jun 2020 12:46:55 +0100 Catalin Marinas wrote: > On Fri, Jun 05, 2020 at 11:08:13AM +0100, Catalin Marinas wrote: > > This patch causes a kernel panic on arm64 (and possibly powerpc, I > > haven't tried). arm64 still uses the 5level-fixup.h and pud_alloc() > > checks for the empty p4d with pgd_none() instead of p4d_none(). > > Ah, should have checked the list first > (https://lore.kernel.org/linux-mm/20200604074446.23944-1-joro@8bytes.org/). > Sorry about that. Can you confirm that the merge of Mike's 5level_hack zappage has fixed the arm64 wontboot?