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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 1B3D4C48BDF for ; Fri, 18 Jun 2021 12:54:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BB282610CD for ; Fri, 18 Jun 2021 12:54:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BB282610CD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 47E486B0070; Fri, 18 Jun 2021 08:54:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 455A36B0071; Fri, 18 Jun 2021 08:54:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 31DA46B0072; Fri, 18 Jun 2021 08:54:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0212.hostedemail.com [216.40.44.212]) by kanga.kvack.org (Postfix) with ESMTP id 00EB46B0070 for ; Fri, 18 Jun 2021 08:54:19 -0400 (EDT) Received: from smtpin39.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 93009181AEF1D for ; Fri, 18 Jun 2021 12:54:19 +0000 (UTC) X-FDA: 78266837838.39.6A2BAE5 Received: from mail-lj1-f182.google.com (mail-lj1-f182.google.com [209.85.208.182]) by imf02.hostedemail.com (Postfix) with ESMTP id 54DD94202A2A for ; Fri, 18 Jun 2021 12:54:18 +0000 (UTC) Received: by mail-lj1-f182.google.com with SMTP id q23so3424017ljh.0 for ; Fri, 18 Jun 2021 05:54:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=JXlMHuJslvLspuDNaWQXZmE6ewC06SDVouNHyl9Mhu0=; b=yuqbX81E1iI96EkRzPFPyslmqvh7KlQiq3VNKVLf5rNyQMopUTqXgybkSlFgrPioap dbAJA+0TSCHQoVUyDgviga0EhMrkPJOQCgqsgWdKIPlbrd17a47I7Lj9+Na6+o9aBIBD PIfYIzHihFBiicLyBGQCtroxkoNy5+S71D79Yr6iwaz+Pg5SZwX2NKuwq7o0E1p+YYr2 AvQBZv2G7bvfJBKgrjjyITI8I2DAPenG2KnHoF2YbLTRNhd5GkiIhneC/q1bGHwtlwVj n3LQbY0WGggI+5iBExXKcKXfLVB7dVH0b9Xun3u8DRaAIZR33FmYBNMR7xwpekrzd1mt bRLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=JXlMHuJslvLspuDNaWQXZmE6ewC06SDVouNHyl9Mhu0=; b=QSYnJxXb//m5Btia9hfOALeJsHk5l/XKj79JtX3uT9T6GKRjfJ620NkK9Tug+8TDVA iV6Sr0lKiPZfJIzfAw6qoh2tzNjd0K6+x5NcRnW/nh9Lj82eqKg6HEBpFkmJf/9RFMDc 2YgXXh3UE52NJg+SKf/xVURy859eUAC3bf2YgPVXczQQR5p+OQKyqqjf0nKncmkHr+Cq jxVuB3J7PXJ+rkd1hFOpD48vsEdk04/slG5Tca2GZr+a0DZvD3efKlvsFTjE9wvSNwwz Um5pJnfnhlYgnaNmcSgu0jg227SvecUk/F3t8jg0XdPj+muc0XaCH33blkoT5zhAaC16 B/3A== X-Gm-Message-State: AOAM532pimgOHAaFfe2YpJxEqpeM5UV2+C5afz3sI+LyT+gK//Wh3toT KzrTFQaItfnKJjOrQP33DJ+AE31p8dpYz6iXdulRcg== X-Google-Smtp-Source: ABdhPJw77jjB8iYIuAzA4HYUKxB0s5H4KNds4QQ1hT23g7Hti7hSjTrLrrVIs5e7mWsDLzfdui5CV3tscXXNGHKLbMQ= X-Received: by 2002:a2e:9003:: with SMTP id h3mr1546346ljg.467.1624020856487; Fri, 18 Jun 2021 05:54:16 -0700 (PDT) MIME-Version: 1.0 References: <2142129092ff9aa00e600c42a26c4015b7f5ceec.1623813516.git.luto@kernel.org> <20210616103446.GC22278@shell.armlinux.org.uk> <20210616132226.GD22278@shell.armlinux.org.uk> <20210616150456.GC22433@arm.com> <20210616152326.GG22278@shell.armlinux.org.uk> <20210616154529.GD22433@arm.com> <20210616160050.GE22433@arm.com> <20210616162716.GH22278@shell.armlinux.org.uk> In-Reply-To: <20210616162716.GH22278@shell.armlinux.org.uk> From: Linus Walleij Date: Fri, 18 Jun 2021 14:54:05 +0200 Message-ID: Subject: Re: [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE To: "Russell King (Oracle)" Cc: Catalin Marinas , Krzysztof Halasa , Neil Armstrong , Peter Zijlstra , Andy Lutomirski , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Dave Hansen , LKML , Linux Memory Management List , Andrew Morton , Mathieu Desnoyers , Nicholas Piggin , Linux ARM , Will Deacon Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 54DD94202A2A Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=linaro.org header.s=google header.b=yuqbX81E; spf=pass (imf02.hostedemail.com: domain of linus.walleij@linaro.org designates 209.85.208.182 as permitted sender) smtp.mailfrom=linus.walleij@linaro.org; dmarc=pass (policy=none) header.from=linaro.org X-Stat-Signature: gc71hc9hok5jqi9zugij5pwgj6rgzqsz X-HE-Tag: 1624020858-497517 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 Wed, Jun 16, 2021 at 6:27 PM Russell King (Oracle) wrote: > Arnd tells me that the current remaining ARM11MPCore users are: > - CNS3xxx (where there is some martinal interest in the Gateworks > Laguna platform) > - Similar for OXNAS > - There used to be the Realview MPCore tile - I haven't turned that on > in ages, and it may be that the 3V cell that backs up the encryption > keys is dead so it may not even boot. I have this machine with 4 x ARM11 MPCore, it works like a charm. I use it to test exactly this kind of stuff, I know if a kernel works on ARM11MPCore it works on anything because of how fragile it is. > So it seems to come down to a question about CNS3xxx and OXNAS. If > these aren't being used, maybe we can drop ARM11MPCore support and > the associated platforms? > > Linus, Krzysztof, Neil, any input? I don't especially need to keep the ARM11MPCore machine alive, it is just a testchip after all. The Oxnas is another story, that has wide deployment and was contributed recently (2016) and has excellent support in OpenWrt so I wouldn't really want to axe that. Yours, Linus Walleij