From patchwork Mon Oct 15 17:56:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Logan Gunthorpe X-Patchwork-Id: 10642347 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BDA8A109C for ; Mon, 15 Oct 2018 17:59:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ADC4C29B7A for ; Mon, 15 Oct 2018 17:59:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9EAF229E67; Mon, 15 Oct 2018 17:59:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5633A29B85 for ; Mon, 15 Oct 2018 17:59:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727081AbeJPBnf (ORCPT ); Mon, 15 Oct 2018 21:43:35 -0400 Received: from ale.deltatee.com ([207.54.116.67]:54690 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727080AbeJPBnf (ORCPT ); Mon, 15 Oct 2018 21:43:35 -0400 Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gC77C-0002IH-3R; Mon, 15 Oct 2018 11:57:14 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.89) (envelope-from ) id 1gC778-0002MY-Sf; Mon, 15 Oct 2018 11:57:10 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org Cc: Stephen Bates , Palmer Dabbelt , Albert Ou , Christoph Hellwig , Andrew Morton , Arnd Bergmann , Logan Gunthorpe Date: Mon, 15 Oct 2018 11:56:56 -0600 Message-Id: <20181015175702.9036-1-logang@deltatee.com> X-Mailer: git-send-email 2.19.0 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sh@vger.kernel.org, sbates@raithlin.com, palmer@sifive.com, aou@eecs.berkeley.edu, hch@lst.de, akpm@linux-foundation.org, arnd@arndb.de, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v2 0/6] sparsemem support for RISC-V X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patchset implements sparsemem on RISC-V. The first few patches move some code in existing architectures into common helpers so they can be used by the new RISC-V implementation. The final patch actually adds sparsmem support to RISC-V. This is the first small step in supporting P2P on RISC-V. --- Changes in v2: * Rebase on v4.19-rc8 * Move the STRUCT_PAGE_MAX_SHIFT define into a common header (near the definition of struct page). As suggested by Christoph. * Clean up the unnecessary nid variable in the memblocks_present() function, per Christoph. * Collected tags from Palmer and Catalin. -- Logan Gunthorpe (6): mm: Introduce common STRUCT_PAGE_MAX_SHIFT define mm/sparse: add common helper to mark all memblocks present ARM: mm: make use of new memblocks_present() helper arm64: mm: make use of new memblocks_present() helper sh: mm: make use of new memblocks_present() helper RISC-V: Implement sparsemem arch/arm/mm/init.c | 17 +---------------- arch/arm64/include/asm/memory.h | 9 --------- arch/arm64/mm/init.c | 28 +--------------------------- arch/riscv/Kconfig | 23 +++++++++++++++++++++++ arch/riscv/include/asm/pgtable.h | 21 +++++++++++++++++---- arch/riscv/include/asm/sparsemem.h | 11 +++++++++++ arch/riscv/kernel/setup.c | 4 +++- arch/riscv/mm/init.c | 8 ++++++++ arch/sh/mm/init.c | 7 +------ include/asm-generic/fixmap.h | 1 + include/linux/mm_types.h | 5 +++++ include/linux/mmzone.h | 6 ++++++ mm/sparse.c | 14 ++++++++++++++ 13 files changed, 91 insertions(+), 63 deletions(-) create mode 100644 arch/riscv/include/asm/sparsemem.h -- 2.19.0