From patchwork Wed Aug 11 00:42:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 12429655 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=-11.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_PATCH,MAILING_LIST_MULTI,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 24781C4338F for ; Wed, 11 Aug 2021 00:43:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9A02A61073 for ; Wed, 11 Aug 2021 00:43:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9A02A61073 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id F12F06B0071; Tue, 10 Aug 2021 20:43:17 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E9B456B0072; Tue, 10 Aug 2021 20:43:17 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D63138D0001; Tue, 10 Aug 2021 20:43:17 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0064.hostedemail.com [216.40.44.64]) by kanga.kvack.org (Postfix) with ESMTP id B85AA6B0071 for ; Tue, 10 Aug 2021 20:43:17 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 7188B8249980 for ; Wed, 11 Aug 2021 00:43:17 +0000 (UTC) X-FDA: 78460950834.30.FF3D987 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf08.hostedemail.com (Postfix) with ESMTP id 260953001867 for ; Wed, 11 Aug 2021 00:43:17 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id E99A06056C; Wed, 11 Aug 2021 00:43:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628642596; bh=dhUncP/4+yqpzI3mayz8xRr13F3WjLadA+iK0UX3tsc=; h=From:To:Cc:Subject:Date:From; b=FcOe5AdnPi+ivIsFrXpVskA7CT3OaYgFY5uwIoLAnmXpOiqmJZJnHEH/dgzhzIiFA daQatxU1WOJoqbIL+k2/lxbO+HEt4fYjku5bG5xZZqQZ+JXaqsEVhyCDfEOQXiu6Lw vl3/QTj3whmwV/eTM64Bl7RuxmKYZ+OVENOqIHvCbDqJsc30kBjiwLfAzaaiV/wCKu 34kQTz/ugSPNSV8ljWdTuXUx1gU83pfFnhE55F7dDYV0Nt62JXvnEReo3bEmJgm0sE 4xrZoVBsn8BoefU+dLOQ77RqwcILcZ1W4JmyNvj5gI7r6J+KuPyXtn7gDaxTnW1aEt oTpe7tKHWmUrg== From: Vineet Gupta To: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Anshuman Khandual , Mike Rapoport , Vineet Gupta Subject: [PATCH 00/18] ARC mm updates to support 3 or 4 levels of paging Date: Tue, 10 Aug 2021 17:42:40 -0700 Message-Id: <20210811004258.138075-1-vgupta@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 260953001867 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=FcOe5Adn; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf08.hostedemail.com: domain of vgupta@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=vgupta@kernel.org X-Stat-Signature: e6spc9dee97gdpzmhwp5ccmjc8mgwwgb X-HE-Tag: 1628642597-692780 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, Big pile of ARC mm changes to prepare for 3 or 4 levels of paging (from current 2) needed for new hardware page walked MMUv6 (in aRCv3 ISA based cores). Most of these changes are incremental cleanups to make way for 14/18 and 15/18 which actually imeplement the new levels (in existing ARCv2 port) and worth a critical eye. CC'ing some of you guys dealing with page tables for a while :-) to spot any obvious gotchas. Thx, -Vineet Vineet Gupta (18): ARC: mm: simplify mmu scratch register assingment to mmu needs ARC: mm: remove tlb paranoid code ARC: mm: move mmu/cache externs out to setup.h ARC: mm: remove pgd_offset_fast ARC: mm: Fixes to allow STRICT_MM_TYPECHECKS ARC: mm: Enable STRICT_MM_TYPECHECKS ARC: ioremap: use more commonly used PAGE_KERNEL based uncached flag ARC: mm: pmd_populate* to use the canonical set_pmd (and drop pmd_set) ARC: mm: non-functional code cleanup ahead of 3 levels ARC: mm: move MMU specific bits out of ASID allocator ARC: mm: move MMU specific bits out of entry code ARC: mm: disintegrate mmu.h (arcv2 bits out) ARC: mm: disintegrate pgtable.h into levels and flags ARC: mm: hack to allow 2 level build with 4 level code ARC: mm: support 3 levels of page tables ARC: mm: support 4 levels of page tables ARC: mm: vmalloc sync from kernel to user table to update PMD ... ARC: mm: introduce _PAGE_TABLE to explicitly link pgd,pud,pmd entries arch/arc/Kconfig | 7 +- arch/arc/include/asm/cache.h | 4 - arch/arc/include/asm/entry-compact.h | 8 - arch/arc/include/asm/mmu-arcv2.h | 94 +++++++ arch/arc/include/asm/mmu.h | 73 +---- arch/arc/include/asm/mmu_context.h | 29 +- arch/arc/include/asm/page.h | 72 +++-- arch/arc/include/asm/pgalloc.h | 70 ++++- arch/arc/include/asm/pgtable-bits-arcv2.h | 151 +++++++++++ arch/arc/include/asm/pgtable-levels.h | 179 ++++++++++++ arch/arc/include/asm/pgtable.h | 315 +--------------------- arch/arc/include/asm/processor.h | 2 +- arch/arc/include/asm/setup.h | 12 +- arch/arc/kernel/entry.S | 6 - arch/arc/mm/fault.c | 20 +- arch/arc/mm/ioremap.c | 3 +- arch/arc/mm/tlb.c | 71 ++--- arch/arc/mm/tlbex.S | 80 ++---- 18 files changed, 617 insertions(+), 579 deletions(-) create mode 100644 arch/arc/include/asm/mmu-arcv2.h create mode 100644 arch/arc/include/asm/pgtable-bits-arcv2.h create mode 100644 arch/arc/include/asm/pgtable-levels.h