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=-8.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 65DB8C3A5A2 for ; Tue, 3 Sep 2019 09:32:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A2FF22DBF for ; Tue, 3 Sep 2019 09:32:44 +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="bCDocUZ1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728492AbfICJcn (ORCPT ); Tue, 3 Sep 2019 05:32:43 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:55348 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726840AbfICJcm (ORCPT ); Tue, 3 Sep 2019 05:32:42 -0400 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=0/sJLUwrVfrxk3HTIaDDDC83oF2uFhScbXHn4cLwfpk=; b=bCDocUZ1eCbE9yUfFeVmCqoTD DmsKpnK6WyaYUlZI2e9JPkTeaKN06kc3ZJOKPUuJE+VnhwYtwyqpu+OoudaWgLfP7hUHbV6K9KjBs i81l26ruRwOE04OMELxruyshNUtqvpGTGtqzhptigSeLMwRITvhcivaLPCmIxyofZXaW3sVYZMBnI 8HtuRSjCP2xuOqHQMzk8QEpu+BbscW4mDdTyGUL7yug6YFWIBKtvkKeWnaVZEAFWTzTDelKly8oCt F8btEMzstQCKAaZSPCmXVE7cA4J9updj/XEJ6CPQAEKJT1DvOqUuXIbXRS3CbuHbqJXzADIsafKBW WoZzQnJ9w==; Received: from clnet-p19-102.ikbnet.co.at ([83.175.77.102] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1i55B3-0004Ft-Bn; Tue, 03 Sep 2019 09:32:41 +0000 From: Christoph Hellwig To: Palmer Dabbelt , Paul Walmsley Cc: Damien Le Moal , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: RISC-V nommu support v4 Date: Tue, 3 Sep 2019 11:32:19 +0200 Message-Id: <20190903093239.21278-1-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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. A git tree is available here: git://git.infradead.org/users/hch/riscv.git riscv-nommu.4 Gitweb: http://git.infradead.org/users/hch/riscv.git/shortlog/refs/heads/riscv-nommu.4 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 v3: - improve a few commit message - cleanup riscv_cpuid_to_hartid_mask - cleanup the timer handling - cleanup the IPI handling a little more - renamed CONFIG_M_MODE to CONFIG_RISCV_M_MODE - split out CONFIG_RISCV_SBI to make some of the ifdefs more obbious - use IS_ENABLED wherever possible instead of if ifdefs to make the code more readable Changes since v2: - rebased to 5.3-rc - remove the EFI image header for nommu builds - set ARCH_SLAB_MINALIGN to ensure stack alignment in the flat binary loader - minor comment improvement - use #defines for more CSRs 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