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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 C8520ECE587 for ; Mon, 14 Oct 2019 16:20:43 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8C45F2133F for ; Mon, 14 Oct 2019 16:20:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="S8p7+PAL"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="mf39s8I0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C45F2133F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject: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=QdP3m1Av7gYNojV0SHoatXaHBRyWHv2iHJHUolMOC7A=; b=S8p7+PAL7vfFBB OUU/h3WSYKFInns+LSKusCmtdj1NmlXdR0PqF/IrEKOQmIvhx2+paTJyVDmPuSrzOwaQiXe7imWn/ p2aOc/a5j5zPjnkRmCVxDugdKujwOcxPeUHDONJXimQd10fN8+V0edd8B991zu16cZbNn43nY2Cca gVOvg+45TsZDjRKczoem21642vm/LdlRVQ9owuMWjSdMYBEW6GRVG3SSD5ovz2yRjXrTOlA28hFpn h0fJqzaeeI8pYac4fQF59OevjCtNd0OKCMWoNqEN8uNu1PQGY6Kkpe4tP5/2m3rmp7ujcYr9UiDSb OvzJoDNaAne+UhlAJf6Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iK35J-0004nm-Ec; Mon, 14 Oct 2019 16:20:37 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iK35G-0004nC-H2 for linux-arm-kernel@lists.infradead.org; Mon, 14 Oct 2019 16:20:35 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (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 011522133F; Mon, 14 Oct 2019 16:20:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571070033; bh=oZaj+ScZ6I1k6tX7lCFyDcuNyxoMhfnp8ALm8sIP41Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mf39s8I0HuBnOrqaQwqxpXSJtLitEorvrbW7QyKsEExq5XMosHsONryJU3khI7odT Nl53TdSUelOxp03w2YWpW8c1aYJyiXdvhIWR8Boi/Uw/HkVPhrPKNV9bToaQU/m5bc QdbAAGbVyfW1QxTKBrVX0O1ICYlJ4dh6bIfpVa/g= Date: Mon, 14 Oct 2019 17:20:29 +0100 From: Will Deacon To: Arnd Bergmann Subject: Re: [PATCH 3/3] arm64: configs: unset CPU_BIG_ENDIAN Message-ID: <20191014162028.eixypo7vlsb3pdgn@willie-the-truck> References: <20190926193030.5843-1-anders.roxell@linaro.org> <20190926193030.5843-5-anders.roxell@linaro.org> <20191011102747.lpbaur2e4nqyf7sw@willie-the-truck> <73701e9f-bee1-7ae8-2277-7a3576171cd4@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191014_092034_591232_40B4EDEA X-CRM114-Status: GOOD ( 15.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anders Roxell , Catalin Marinas , John Garry , Linux Kernel Mailing List , Hanjun Guo , Olof Johansson , Linux ARM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, Oct 12, 2019 at 04:05:57PM +0200, Arnd Bergmann wrote: > On Sat, Oct 12, 2019 at 9:33 AM Hanjun Guo wrote: > > > > On 2019/10/11 18:27, Will Deacon wrote: > > [...] > > > > > > Does anybody use BIG_ENDIAN? If we're not even building it then maybe we > > > should get rid of it altogether on arm64. I don't know of any supported > > > userspace that supports it or any CPUs that are unable to run little-endian > > > binaries. > > > > FWIW, massive telecommunication products (based on ARM64) form Huawei are using > > BIG_ENDIAN, and will use BIG_ENDIAN in the near future as well. > > Ok, thanks for the information -- that definitely makes it clear that > it cannot go > away anytime soon (though it doesn't stop us from change the > allmodconfig default > if we decide that's a good idea). Agreed on both counts. > Do you know if there are currently any patches against mainline to > make big-endian > work in products, or is everything working out of the box? I suspect "everything" is probably much narrower in scope than for little-endian configurations simply because of the lack of distribution support and associated testing. If the companies using it are willing to contribute back fixes as they run into problems, then that's probably the best we can hope for. Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel