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 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 50186CCF9F8 for ; Thu, 6 Nov 2025 01:01:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=r6I0TYY3j79BQpKPB1Cj7u8E0I09XzskLvOBfRvxEFM=; b=sE+4xwgjn5AoxJNtNCLtQ4ODUd 0mAB5j6Cdz8ZLPHs3R3+wodIF1DgAIReEREDRG8QZGpUh5SmkE9Wno500vprdo/ShXG6BqkARgWf3 JglBBNCpdz4pS6DGNjgw/rIehrRrV98L0wGg1JRkZng1XioUBPlOJ3K4X28uROUjwid6TAHAZB0ky 6gFW5ihorkPb7PyTAu5KBSQryg70rSO7zl8f/B5Qmrp9qCzEnD6jcZba6pB0EzPlwD4GjePIcqnmt 0ha1tTwNycJUnKlNLpMHGUtRERJk21WeJasiF0Cd7iFB+etvG8eHc4lWcaH5RdOor5446WZUVrtND gJS6SS2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vGoNb-0000000EfoC-2dTb; Thu, 06 Nov 2025 01:01:35 +0000 Received: from out30-98.freemail.mail.aliyun.com ([115.124.30.98]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vGoNY-0000000EfmS-1cup for linux-arm-kernel@lists.infradead.org; Thu, 06 Nov 2025 01:01:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1762390886; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; bh=r6I0TYY3j79BQpKPB1Cj7u8E0I09XzskLvOBfRvxEFM=; b=egzIug9jy80entm/RTk+M5jaJv2MHtLd7D+4hNuYYwDnJ7voxocXNO0d/V/rpeHRY0c4tQAIoiua6EJJq2Kkrx39YJ8JX0vBy9cReiLfJIjEHtHDvQsyPcQnKyu+2CcXZ9yMC3v8UB8mDkziplqUNxU8GVabJhfyxj57SRPUa+Y= Received: from DESKTOP-5N7EMDA(mailfrom:ying.huang@linux.alibaba.com fp:SMTPD_---0WrnG5nF_1762390876 cluster:ay36) by smtp.aliyun-inc.com; Thu, 06 Nov 2025 09:01:25 +0800 From: "Huang, Ying" To: Catalin Marinas Cc: Will Deacon , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Vlastimil Babka , Zi Yan , Baolin Wang , Ryan Roberts , Yang Shi , "Christoph Lameter (Ampere)" , Dev Jain , Barry Song , Anshuman Khandual , Kefeng Wang , Kevin Brodsky , Yin Fengwei , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH -v4 0/2] arm, tlbflush: avoid TLBI broadcast if page reused in write fault In-Reply-To: <20251104095516.7912-1-ying.huang@linux.alibaba.com> (Huang Ying's message of "Tue, 4 Nov 2025 17:55:14 +0800") References: <20251104095516.7912-1-ying.huang@linux.alibaba.com> Date: Thu, 06 Nov 2025 09:01:15 +0800 Message-ID: <87ms509dpg.fsf@DESKTOP-5N7EMDA> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251105_170133_251195_4B4F55E4 X-CRM114-Status: GOOD ( 12.92 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Huang Ying writes: > This series is to optimize the system performance via avoiding TLBI > broadcast if page is reused in the write protect fault handler. More > details of the background and the test results can be found in [2/2]. > > Changelog: > > v4: > > - Collected Reviewed-by and Acked-by, Thanks Lorenzo, David, Ryan, and > Barry. > > v3: > > - Various code cleanup and improved design and document in [1/2], > Thanks Lorenzo and David's comments! > - Fixed a typo and improved function interface in [2/2], Thanks Ryan's > comments! > > v2: > > - Various code cleanup in [1/2], Thanks David's comments! > - Remove unnecessary __local_flush_tlb_page_nosync() in [2/2], Thanks Ryan's comments! > - Add missing contpte processing, Thanks Rayn and Catalin's comments! > > Huang Ying (2): > mm: add spurious fault fixing support for huge pmd > arm64, tlbflush: don't TLBI broadcast if page reused in write fault > > arch/arm64/include/asm/pgtable.h | 14 ++++--- > arch/arm64/include/asm/tlbflush.h | 56 ++++++++++++++++++++++++++++ > arch/arm64/mm/contpte.c | 3 +- > arch/arm64/mm/fault.c | 2 +- > include/linux/huge_mm.h | 2 +- > include/linux/pgtable.h | 4 ++ > mm/huge_memory.c | 33 ++++++++++------ > mm/internal.h | 2 +- > mm/memory.c | 62 +++++++++++++++++++++++-------- > 9 files changed, 140 insertions(+), 38 deletions(-) Hi, Catalin, Do you have time to take a look at this series? Are there some remain issues? --- Best Regards, Huang, Ying