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=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 64F7BC4320A for ; Sun, 15 Aug 2021 09:26:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43B8A61042 for ; Sun, 15 Aug 2021 09:26:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236971AbhHOJ1V (ORCPT ); Sun, 15 Aug 2021 05:27:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:33330 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbhHOJ1U (ORCPT ); Sun, 15 Aug 2021 05:27:20 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D6DDF6103A; Sun, 15 Aug 2021 09:26:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629019610; bh=trUOhcObmX84g8zVOeV0ixAL+vgOcmd4ivtys7gco1s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=R1/r42SDz5CKltxjesnI9RS2eUH1qqsAtkx86DEdIbS9bfj1OD3ZvNXv9FQb9u3dn VaXYQMqY0fDPad+uHr4YCKwE/5e9Rf7+keC1SlSSmF/+g8rfph/tJi9Aj9AjhD7zml 42xRUl+An9WqFwOhL0rUfyChSCid8cJIDLCV0tr7PZcP0l0mZmFwgEW8p+ICxWPsrQ IvE4BqaMsfegoCHNISFqeyYvAe6cV45Lxypb0Hj/161UKMhvl9WbZAVjCHkAlKO/Tf 6E0tUN+pnzv9jI0jrLQ9/Zkj1fwMoeo1SRTAw6PogAcY6WYxUn0UXECpihvhMKk3h2 dk12dh2sVhMVQ== Date: Sun, 15 Aug 2021 12:26:43 +0300 From: Mike Rapoport To: Vineet Gupta Cc: linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Anshuman Khandual Subject: Re: [PATCH v2 00/19] ARC mm updates: support 3/4 levels and asm-generic/pgalloc Message-ID: References: <20210812233753.104217-1-vgupta@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210812233753.104217-1-vgupta@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 12, 2021 at 04:37:34PM -0700, Vineet Gupta wrote: > 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. There are a couple of small nits here and there, but overall Acked-by: Mike Rapoport > 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 > -- Sincerely yours, Mike.