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 31983CCA476 for ; Mon, 13 Oct 2025 09:21:43 +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-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=Y/97U6AgdiA5Dn3k47PnInPX3VlZycLa5fUP4muVjYE=; b=F4B80ulo87kOESIINrwzrpNTC4 0oAPrrC2q7wOZJ4bv59/jtlVUs9p9iTwZJMG1ClOBdg088YJhpvCz83mHe8TRD3e5IySpg/iJ0YkE 9MpcKeFeIAp+XtxRDJVpTHluT3QHIwJT81iHMhUdQh9r0cfhoQvQP8daoeScotlw03wjn3UgLADy+ 4dul0AhXXSyFWoWmMZzaeiWPKt6mviMOrLu1xloRTw58/cCDDrdCcbn9nMJCcLKocE7FDg9djUTFz HAFBRFIuGInfTTgQaI0s7n8PwHLrr7Liif6jxktJ1/MWFPIY8gNtJD7lwqT+YeCDOODElDo6a9QKe LY7KNS7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8EkH-0000000CiMm-1c9S; Mon, 13 Oct 2025 09:21:33 +0000 Received: from out30-110.freemail.mail.aliyun.com ([115.124.30.110]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8EkE-0000000CiLq-3UWO for linux-arm-kernel@lists.infradead.org; Mon, 13 Oct 2025 09:21:32 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1760347286; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=Y/97U6AgdiA5Dn3k47PnInPX3VlZycLa5fUP4muVjYE=; b=K7Dm17XOgoHRQYzScH9eDuZG43jkkOV+/EgjwNkkYFJqbqQKOGliumrarInaD8MJOdQdaQ+JwgHUR6BkWr5Gc4nW+BEn8jBUypF0M4AzJcH/YKIMg3sxXjyk8xOt/v5JmSg1R/26+8wU0Yv7kNVNkumvtPyIk66G9yt/nMjYDhs= Received: from localhost.localdomain(mailfrom:ying.huang@linux.alibaba.com fp:SMTPD_---0Wq1niU9_1760347251 cluster:ay36) by smtp.aliyun-inc.com; Mon, 13 Oct 2025 17:21:24 +0800 From: Huang Ying To: Catalin Marinas , Will Deacon , Andrew Morton , David Hildenbrand Cc: Huang Ying , Lorenzo Stoakes , Vlastimil Babka , Zi Yan , Baolin Wang , Ryan Roberts , Yang Shi , "Christoph Lameter (Ampere)" , Dev Jain , Barry Song , Anshuman Khandual , Yicong Yang , Kefeng Wang , Kevin Brodsky , Yin Fengwei , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH -v2 0/2] arm, tlbflush: avoid TLBI broadcast if page reused in write fault Date: Mon, 13 Oct 2025 17:20:36 +0800 Message-Id: <20251013092038.6963-1-ying.huang@linux.alibaba.com> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251013_022131_545631_D84CB239 X-CRM114-Status: UNSURE ( 7.09 ) X-CRM114-Notice: Please train this message. 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 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: 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/pgtable.h | 4 +++ mm/huge_memory.c | 22 +++++++++--- mm/internal.h | 4 +-- 7 files changed, 90 insertions(+), 15 deletions(-) Best Regards, Huang, Ying