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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A93CC433DF for ; Fri, 5 Jun 2020 11:47:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 461AB2070B for ; Fri, 5 Jun 2020 11:47:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 461AB2070B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CCA1180007; Fri, 5 Jun 2020 07:47:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C79E08E0006; Fri, 5 Jun 2020 07:47:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B676480007; Fri, 5 Jun 2020 07:47:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0061.hostedemail.com [216.40.44.61]) by kanga.kvack.org (Postfix) with ESMTP id 9C2448E0006 for ; Fri, 5 Jun 2020 07:47:01 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 525B3180AD801 for ; Fri, 5 Jun 2020 11:47:01 +0000 (UTC) X-FDA: 76894981842.21.hope84_1b1661026d9f Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 3A5E9180442C0 for ; Fri, 5 Jun 2020 11:47:01 +0000 (UTC) X-HE-Tag: hope84_1b1661026d9f X-Filterd-Recvd-Size: 2098 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Fri, 5 Jun 2020 11:47:00 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C2D672B; Fri, 5 Jun 2020 04:46:59 -0700 (PDT) Received: from gaia (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4FB4D3F305; Fri, 5 Jun 2020 04:46:57 -0700 (PDT) Date: Fri, 5 Jun 2020 12:46:55 +0100 From: Catalin Marinas To: Joerg Roedel Cc: x86@kernel.org, hpa@zytor.com, Dave Hansen , Andy Lutomirski , Peter Zijlstra , rjw@rjwysocki.net, Arnd Bergmann , Andrew Morton , 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: <20200605114654.GD31371@gaia> References: <20200515140023.25469-1-joro@8bytes.org> <20200515140023.25469-2-joro@8bytes.org> <20200605100813.GA31371@gaia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200605100813.GA31371@gaia> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 3A5E9180442C0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 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: 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/). Please ignore my patch then. -- Catalin