From patchwork Wed Nov 24 11:20:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qinglin Pan X-Patchwork-Id: 12636655 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 157B5C433EF for ; Wed, 24 Nov 2021 11:20:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=l+PU2xVXUVVLFJVKjiFl64Yfq0yX3VV3SoH0ZG6NgCw=; b=UcbdedC3ARfafa 528ZdDvHwe5OiVSCyYiPsJaYXjBlOdlTurGazIxH/sS+1n+mdH2WZVPk/VOVhSrEn/i8QapHnM8gl zEVJtgj2OUlhqVUiHekFRxbg6wmzpx6CdB2fH9ugVUPMQ+43jPAeiUPD69rG65XQE1niVJwLokoAE Uo6sIxi9+hOmq0uAYxmE5WWmvs1lK6UV1yr1cdXU2xFbNG3MlHNYDc2ti5ymyTmGI4ouVksK/i4yW xoPECF5/PdtLaHsM6TgeDLMJVGovjp81PTeTkdhwup+DrDTny7Wvd/c0FFLNnlgxyMiHvUcHtpDsh sABMhvO9KXyadTgs3z7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mpqKF-004ZdM-Fb; Wed, 24 Nov 2021 11:20:31 +0000 Received: from smtp21.cstnet.cn ([159.226.251.21] helo=cstnet.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mpqK9-004Za8-B4 for linux-riscv@lists.infradead.org; Wed, 24 Nov 2021 11:20:27 +0000 Received: from localhost.localdomain (unknown [124.16.141.242]) by APP-01 (Coremail) with SMTP id qwCowAAnL_v3H55hpmdRCA--.35989S2; Wed, 24 Nov 2021 19:20:23 +0800 (CST) From: panqinglin2020@iscas.ac.cn To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org Cc: jeff@riscv.org, xuyinan@ict.ac.cn, Qinglin Pan Subject: [RESEND PATCH v1 0/2] Add Sv57 page table support Date: Wed, 24 Nov 2021 19:20:19 +0800 Message-Id: <20211124112021.788242-1-panqinglin2020@iscas.ac.cn> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-CM-TRANSID: qwCowAAnL_v3H55hpmdRCA--.35989S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKw1rKF18Wr18AFyfJFW7CFg_yoWDZrc_C3 97JayfXryxXFWxJF9rJ3WfJry2kFWFgFyDAF4UX3W7K3WkGrn8Ga4Dtryqyr1jyrZ0van7 AFyrtrWftr12gjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbhxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2vYz4IE04k24VAvwVAKI4IrM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI 64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8Jw Am72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAG YxC7M4kE6xkIj40Ew7xC0wCY1x0262kKe7AKxVWUAVWUtwCY02Avz4vE14v_Gw4l42xK82 IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC2 0s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMI IF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF 0xvE42xK8VAvwI8IcIk0rVW3JVWrJr1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z2 80aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUb8wIDUUUUU== X-Originating-IP: [124.16.141.242] X-CM-SenderInfo: 5sdq1xpqjox0asqsiq5lvft2wodfhubq/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211124_032025_810776_2818294A X-CRM114-Status: UNSURE ( 5.03 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Qinglin Pan This patchset is based on Alex's Sv48 patchset v2. This implements Sv57 support at runtime. The kernel will try to boot with 5-level page table firstly when the mmu-type field in dtb is "mmu,sv57" or null, and will fallback to 4-level if the HW does not support it. Tested on: - qemu rv64 sv39 - qemu rv64 sv48 - qemu rv64 sv57 - Sifive unmatched Qinglin Pan (2): riscv,mm: Add Sv57 support based on Sv48 implementation Documentation, mm: Add Sv57 vm layout documentation Documentation/riscv/vm-layout.rst | 36 ++++++ arch/riscv/Kconfig | 4 +- arch/riscv/include/asm/csr.h | 1 + arch/riscv/include/asm/fixmap.h | 1 + arch/riscv/include/asm/page.h | 1 + arch/riscv/include/asm/pgalloc.h | 49 ++++++++ arch/riscv/include/asm/pgtable-64.h | 103 ++++++++++++++++- arch/riscv/include/asm/pgtable.h | 4 +- arch/riscv/kernel/cpu.c | 4 +- arch/riscv/mm/init.c | 169 +++++++++++++++++++++++++--- 10 files changed, 348 insertions(+), 24 deletions(-) Tested-by: Heiko Stuebner