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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0517BC001E0 for ; Wed, 2 Aug 2023 15:54:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235132AbjHBPyq (ORCPT ); Wed, 2 Aug 2023 11:54:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235185AbjHBPyd (ORCPT ); Wed, 2 Aug 2023 11:54:33 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E6461BF1 for ; Wed, 2 Aug 2023 08:53:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 437EB61A10 for ; Wed, 2 Aug 2023 15:52:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98D3CC433C7; Wed, 2 Aug 2023 15:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1690991562; bh=ktGX491htPJN3eBOuZsgIqhWTk9LkdJOWvFqWMaa6yk=; h=Date:To:From:Subject:From; b=UHFYUFg+sRZwcWoBnHUhrI23LlUEbGjNB6Y+maE7YxzqTb3h3CwzfNFWIChA4HElq oUmAdBeJiZkrpEDwI+qmGl4q+EWGu5Y+HllXQckrLvfrh+2NsOK6TzAAFODzUdF7Z8 d646/9EjU25zwMV5HUL6cwn7mDplCDQZG9wmxv54= Date: Wed, 02 Aug 2023 08:52:41 -0700 To: mm-commits@vger.kernel.org, will@kernel.org, william.kucharski@oracle.com, songmuchun@bytedance.com, mike.kravetz@oracle.com, kirill@shutemov.name, kaleshsingh@google.com, joel@joelfernandes.org, catalin.marinas@arm.com, almasrymina@google.com, 21cnbao@gmail.com, wangkefeng.wang@huawei.com, akpm@linux-foundation.org From: Andrew Morton Subject: + arm64-hugetlb-enable-__have_arch_flush_hugetlb_tlb_range.patch added to mm-unstable branch Message-Id: <20230802155242.98D3CC433C7@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE has been added to the -mm mm-unstable branch. Its filename is arm64-hugetlb-enable-__have_arch_flush_hugetlb_tlb_range.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arm64-hugetlb-enable-__have_arch_flush_hugetlb_tlb_range.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Kefeng Wang Subject: arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE Date: Wed, 2 Aug 2023 09:27:31 +0800 It is better to use huge page size instead of PAGE_SIZE for stride when flush hugepage, which reduces the loop in __flush_tlb_range(). Let's support arch's flush_hugetlb_tlb_range(), which is used in hugetlb_unshare_all_pmds(), move_hugetlb_page_tables() and hugetlb_change_protection() for now. Note, for hugepages based on contiguous bit, it has to be invalidated individually since the contiguous PTE bit is just a hint, the hardware may or may not take it into account. Link: https://lkml.kernel.org/r/20230802012731.62512-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Reviewed-by: Muchun Song Reviewed-by: Catalin Marinas Cc: Barry Song <21cnbao@gmail.com> Cc: Joel Fernandes (Google) Cc: Kalesh Singh Cc: "Kirill A. Shutemov" Cc: Mike Kravetz Cc: Mina Almasry Cc: Will Deacon Cc: William Kucharski Signed-off-by: Andrew Morton --- arch/arm64/include/asm/hugetlb.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) --- a/arch/arm64/include/asm/hugetlb.h~arm64-hugetlb-enable-__have_arch_flush_hugetlb_tlb_range +++ a/arch/arm64/include/asm/hugetlb.h @@ -60,4 +60,19 @@ extern void huge_ptep_modify_prot_commit #include +#define __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE +static inline void flush_hugetlb_tlb_range(struct vm_area_struct *vma, + unsigned long start, + unsigned long end) +{ + unsigned long stride = huge_page_size(hstate_vma(vma)); + + if (stride == PMD_SIZE) + __flush_tlb_range(vma, start, end, stride, false, 2); + else if (stride == PUD_SIZE) + __flush_tlb_range(vma, start, end, stride, false, 1); + else + __flush_tlb_range(vma, start, end, PAGE_SIZE, false, 0); +} + #endif /* __ASM_HUGETLB_H */ _ Patches currently in -mm which might be from wangkefeng.wang@huawei.com are mm-remove-arguments-of-show_mem.patch mm-make-show_free_areas-static.patch mm-factor-out-vma-stack-and-heap-checks.patch drm-amdkfd-use-vma_is_initial_stack-and-vma_is_initial_heap.patch selinux-use-vma_is_initial_stack-and-vma_is_initial_heap.patch perf-core-use-vma_is_initial_stack-and-vma_is_initial_heap.patch arm64-hugetlb-enable-__have_arch_flush_hugetlb_tlb_range.patch