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=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 5FAF8C433B4 for ; Tue, 20 Apr 2021 03:12:47 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 08D026101C for ; Tue, 20 Apr 2021 03:12:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08D026101C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Oe3AqpZG0Om+e/qU8fj598hif1PWq7WfkYcx03K1/ZI=; b=Ek1s/7+2os1l85yJ6EpYv7Lgl jBajBlX+FcezIZgTCPkW20gLxkpDOd8wUWedh7gQWFXPHKUVjcKXjvQ18VfGWlArH9yKwWFRIMqQY GTZO/viby9goOp1bxKXhxitNs/EW6mCz7Bhsg5kKTmwQcG86m7GQdjTS6hPs2ndKbflVb340umHhT WPFY5utIhS6WSYV+4KWRB2Dy+xG+jL89vLV8mZ8Xx3+nT84kdO0zNpZ2lO817R4VXkw9JPlNLFaaD CC1D7X2pLOlFnPeyRIUtib8rJraCKEh6eKY3u1oFg/gl/tmsMHW8LqOmi3Ky9woykVX6oi/BMz2xB u8E0s+wvA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lYgmj-00B2eo-Rw; Tue, 20 Apr 2021 03:10:46 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lYgmh-00B2eg-0s; Tue, 20 Apr 2021 03:10:43 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=AqTuRNKIkAmLe8Av3ztkUAdmYLIeq8PftziUxkdnED4=; b=cmFm54dBhWL/FJIZPa1qLdPQCh Hw3d+6yeN1BRhVLA8lXi0+OxBNGlwLN0iOxnz1tNw19z7dwED70uUHLHZ0QHCfVKNKBQenpL6sjTp RiTDO60rG0H/+Io0sMW2Sl9Yi8uXuQbOmHCm5NzIBmET6uhHQgkerVA9dwlFEY8qLE05GHB/V0PuZ Ao/jqa8j5AAd9wR8FIZ6K7RUe8Zya2Y8SayHTkT8KDCcVbyrGWXzGbXLEMb2IexWdlSkgwpOFyitu JUjQ4dGrsXV5WoOuWngimlVppnjX5FKsAVbm0+zGZtX6LrP+cU2NI9VCFMIOrg0zh0XBFnqcrMJKV Y0NuvgGw==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lYgmT-00Ee86-KY; Tue, 20 Apr 2021 03:10:34 +0000 Date: Tue, 20 Apr 2021 04:10:29 +0100 From: Matthew Wilcox To: Vineet Gupta Cc: "brouer@redhat.com" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "netdev@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" , "linux-mips@vger.kernel.org" , "ilias.apalodimas@linaro.org" , "mcroce@linux.microsoft.com" , "grygorii.strashko@ti.com" , "arnd@kernel.org" , "hch@lst.de" , "linux-snps-arc@lists.infradead.org" , "mhocko@kernel.org" , "mgorman@suse.de" Subject: Re: [PATCH 1/2] mm: Fix struct page layout on 32-bit systems Message-ID: <20210420031029.GI2531743@casper.infradead.org> References: <20210416230724.2519198-1-willy@infradead.org> <20210416230724.2519198-2-willy@infradead.org> <20210417024522.GP2531743@casper.infradead.org> <9f99b0a0-f1c1-f3b0-5f84-3a4bfc711725@synopsys.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <9f99b0a0-f1c1-f3b0-5f84-3a4bfc711725@synopsys.com> 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Apr 20, 2021 at 02:48:17AM +0000, Vineet Gupta wrote: > > 32-bit architectures which expect 8-byte alignment for 8-byte integers > > and need 64-bit DMA addresses (arc, arm, mips, ppc) had their struct > > page inadvertently expanded in 2019. > > FWIW, ARC doesn't require 8 byte alignment for 8 byte integers. This is > only needed for 8-byte atomics due to the requirements of LLOCKD/SCOND > instructions. Ah, like x86? OK, great, I'll drop your arch from the list of affected. Thanks! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel