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=-14.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, 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 ED25AC4338F for ; Thu, 12 Aug 2021 23:37:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFCEA610F7 for ; Thu, 12 Aug 2021 23:37:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237973AbhHLXiY (ORCPT ); Thu, 12 Aug 2021 19:38:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:48626 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229703AbhHLXiX (ORCPT ); Thu, 12 Aug 2021 19:38:23 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F2F436103E; Thu, 12 Aug 2021 23:37:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628811477; bh=cjVChcfrvuXbPh5LIL6KQzVZ8QD79IVN7HLo5LoUmIQ=; h=From:To:Cc:Subject:Date:From; b=FDVpodf9ZzkWEE3mkU6g0FyvggmUWx5aTtCy28S8sNtDcQqYeQtz6YY6mD72MORYG MvAK+xPkEqL343KbpeOF1z+QV3r4XQgoIDmJF/elSbcbqYE36d0edUIbsQYGlJaY8O wd1gNUbJ5b4XrWGOr11MhN/SJy3H6MthI5n/a68rk+ctWTmPfO1jNRTJQjdLa1sAPi RY5tjU44RbYFk1Ss60IhzVSITiAslJd0GBzbJeWbvtsMXIMgk1Plis5hmrjl8eFO0F 32pW60PwJfv/lVPQIDXjw8f+NjXmG3V19HJ2BKtJ23mTrGKBSsPaFVzeIfK/fXMBFR tQoAbPzU66q+w== 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 v2 00/19] ARC mm updates: support 3/4 levels and asm-generic/pgalloc Date: Thu, 12 Aug 2021 16:37:34 -0700 Message-Id: <20210812233753.104217-1-vgupta@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Changes since v1 [1] - Switched ARC to asm-generic/pgalloc.h (so struct page based pgtable_t) [Mike Rapoport] - Dropped {pud,pmd}_alloc_one/{pud,pmd}_free provided by asm-generic/pgalloc.h [Mike Rapoport] - Negative diffstat now due to above - Added BUILD_BUG_ON() to arch/arc/mm/init.c for sanity of table sizes - Consolidated 2 patches related to ARC_USE_SCRATCH_REG [Mike Rapoport] - Reworked how mmu is re-enabled in entry code [Jose Abreu] [1] http://lists.infradead.org/pipermail/linux-snps-arc/2021-August/005326.html Vineet Gupta (19): ARC: mm: use SCRATCH_DATA0 register for caching pgdir in ARCv2 only ARC: mm: remove tlb paranoid code ARC: mm: move mmu/cache externs out to setup.h 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: switch pgtable_t back to struct page * ARC: mm: switch to asm-generic/pgalloc.h 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 | 103 +++++++ arch/arc/include/asm/mmu.h | 73 +---- arch/arc/include/asm/mmu_context.h | 28 +- arch/arc/include/asm/page.h | 74 +++-- arch/arc/include/asm/pgalloc.h | 81 ++---- 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-arcv2.S | 1 + arch/arc/kernel/entry.S | 7 +- arch/arc/mm/fault.c | 20 +- arch/arc/mm/init.c | 5 + arch/arc/mm/ioremap.c | 3 +- arch/arc/mm/tlb.c | 68 +---- arch/arc/mm/tlbex.S | 78 ++---- 20 files changed, 591 insertions(+), 628 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 -- 2.25.1