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=-7.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 97475C48BE8 for ; Mon, 24 Jun 2019 05:43:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 40EBF2089F for ; Mon, 24 Jun 2019 05:43:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="WnxrlYY9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40EBF2089F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A49C36B0003; Mon, 24 Jun 2019 01:43:23 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9FA718E0002; Mon, 24 Jun 2019 01:43:23 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8C22F8E0001; Mon, 24 Jun 2019 01:43:23 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id 597846B0003 for ; Mon, 24 Jun 2019 01:43:23 -0400 (EDT) Received: by mail-pf1-f197.google.com with SMTP id h15so8888773pfn.3 for ; Sun, 23 Jun 2019 22:43:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:date :message-id:mime-version:content-transfer-encoding; bh=G+0O3j+cgCRbigr/X4MIfnZa4yWmCGHY98UjePy9hlI=; b=G3wgpXvoZJQ2ow+IaMbB714v25jUUMJ5A5up4yESibI6QzKsxwDTHzP1I5UGDBksp4 jhCGMb6nYn0braAK/IOVm311G4wCxYdZDR4BV0ylQxp2NoW9DTpwv5bkF1+g0LTibTPM uVP8GxKScjpeKRc5O/VXVVLpEFd+7cmMNjdoK4J/iZtG9+Yb32sRs4vWxNu7gK4NADWG d59OU1/ArlIxnKJwFckrWwg6zS4UHWgCrvaxarqm23yC+g3mZThE50i26LZN6N5PqihW fi+2VlmZSguWokQBwpPTTsnPO1Y5Wd9cTmfM5Esdk+5nP8wpVrmd8LzCoe1vtzVy+7ZF McMg== X-Gm-Message-State: APjAAAXjFnkgddrhjCynUbdo42fL+ZedjKohQ4I8CIhoGzRQoK0UvTrn kFUrPvtvQfDkmOAGhGXrJBqa2Nx88yD3mudzVSYE47PlrIJGtm1T0nPeqPMokgTcES1mK2xF+Ng GPUgkIzsWy2YAyW+HvdXgEMiSWPIZWeMJBcA2DBLcGUprSCQLg8exiPKCJufTSP0= X-Received: by 2002:a17:90a:aa0a:: with SMTP id k10mr23192742pjq.43.1561355002938; Sun, 23 Jun 2019 22:43:22 -0700 (PDT) X-Google-Smtp-Source: APXvYqwml9+H6MvO6Mgarf6ZfHYfV9CyX1ep3evP3oEJn61cDkwPMwE70nxYi3xpCfVvuf3LEJNE X-Received: by 2002:a17:90a:aa0a:: with SMTP id k10mr23192686pjq.43.1561355002117; Sun, 23 Jun 2019 22:43:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1561355002; cv=none; d=google.com; s=arc-20160816; b=ZkXGyl8rQ9H5nNAKp/wL3QT5Xo0MZMGXipj9vMb9NrXdx6GffGWWYRY+6cWLYSP2Vf lZuVGlHusCy3GRDirUwnpKn2db+uB4bUBGoQw7uNU311TKVvA8jzJPs2hTM84BGfE20i 2+zlPYX8nHGi+SrJfu+Y51GanhyvVNaKv2mcNFjGkMgPbVBYo9ZrcfCXIC5kG7z3LCv0 AzsWlAktMX6gVGFWQONAt8NS/1o9yaRMXZxZJK9tFCWGbWAr6GL8AP+/AdC7wtBLvIbS cG4MZL1hQy6AqBRC6+zzQVQ36lYIzywYy4hf3w66M4pJYBMZisAxWYYD05SoqDpGMbeM c5Eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:dkim-signature; bh=G+0O3j+cgCRbigr/X4MIfnZa4yWmCGHY98UjePy9hlI=; b=mlcSPmxuks5QpB7sa+BM80zkg9GsN/5/k9zswCnx8634jewy3kBa2BiXT8RE0nPIE9 Z+4BAZUpr6kvwoTAttiRUAgK2jcPhcfUK+LQN64jecKG0xlwC2CSaiATDDpm5EsxHWZf HkhCS1KQGF1vFuQiOIMhOZVE2KT9K/Zb4CTvXZ6zI1dsXWcb766Ja27xhpjN9Y3DYHsA Y9rfxoM83mxJIfFezttpavrAsqlwFRGeWAxfxZv0krHRk/4YbR7VF/ZUvoOWm8qSyrQz SQEyt+me60BUw591iEQshbgXxh8phz8zbBm2l933Q+gaXn6h8QxkCpuir0v2L8HIqgxP l05A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20170209 header.b=WnxrlYY9; spf=pass (google.com: best guess record for domain of batv+84882ec255bc51113d1a+5783+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+84882ec255bc51113d1a+5783+infradead.org+hch@bombadil.srs.infradead.org Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id h8si4564822plt.16.2019.06.23.22.43.19 for (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 23 Jun 2019 22:43:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of batv+84882ec255bc51113d1a+5783+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) client-ip=2607:7c80:54:e::133; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20170209 header.b=WnxrlYY9; spf=pass (google.com: best guess record for domain of batv+84882ec255bc51113d1a+5783+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+84882ec255bc51113d1a+5783+infradead.org+hch@bombadil.srs.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=G+0O3j+cgCRbigr/X4MIfnZa4yWmCGHY98UjePy9hlI=; b=WnxrlYY91HMHTqus7NTc7TkvF mDPWku21XSxCKeAPWG/rATrzM+mOEukkUC/aepN9oWr4+USpYvA6rpAheJljOmRzQv4Fosq0IXzQ5 /lR09sihl/AgaGkaKRV8KZ8qt+O/HskRSKeBwYzk/8zosnQmWPGzXDAlZlrhivb2Ac9As7JAEwRNJ azOD6kksRz/fZE0Xp3xOqBk9GkUgfdaz3LB3v81wBIAkvvg+0PxRQ7uMYCsFgPJv5SXT1g+IOC/KD cbyUJ+5yxKazc4N530ff+eGFiHIO6qnd842pID0hlRpAQzqQiX+fvlTTJg6I++Na6SvSjjsEUibBz zXKRYKCwQ==; Received: from 213-225-6-159.nat.highway.a1.net ([213.225.6.159] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hfHl5-00063u-7r; Mon, 24 Jun 2019 05:43:15 +0000 From: Christoph Hellwig To: Palmer Dabbelt , Paul Walmsley Cc: Damien Le Moal , linux-riscv@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: RISC-V nommu support v2 Date: Mon, 24 Jun 2019 07:42:54 +0200 Message-Id: <20190624054311.30256-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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: Hi all, below is a series to support nommu mode on RISC-V. For now this series just works under qemu with the qemu-virt platform, but Damien has also been able to get kernel based on this tree with additional driver hacks to work on the Kendryte KD210, but that will take a while to cleanup an upstream. To be useful this series also require the RISC-V binfmt_flat support, which I've sent out separately. A branch that includes this series and the binfmt_flat support is available here: git://git.infradead.org/users/hch/riscv.git riscv-nommu.2 Gitweb: http://git.infradead.org/users/hch/riscv.git/shortlog/refs/heads/riscv-nommu.2 I've also pushed out a builtroot branch that can build a RISC-V nommu root filesystem here: git://git.infradead.org/users/hch/buildroot.git riscv-nommu.2 Gitweb: http://git.infradead.org/users/hch/buildroot.git/shortlog/refs/heads/riscv-nommu.2 Changes since v1: - fixes so that a kernel with this series still work on builds with an IOMMU - small clint cleanups - the binfmt_flat base and buildroot now don't put arguments on the stack