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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C1DE3D65529 for ; Wed, 17 Dec 2025 09:47:23 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 323036B0093; Wed, 17 Dec 2025 04:47:23 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2CDA26B0095; Wed, 17 Dec 2025 04:47:23 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1D61A6B0096; Wed, 17 Dec 2025 04:47:23 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 0D5BA6B0093 for ; Wed, 17 Dec 2025 04:47:23 -0500 (EST) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id BEADD8B6CE for ; Wed, 17 Dec 2025 09:47:22 +0000 (UTC) X-FDA: 84228485124.12.CB75B59 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) by imf25.hostedemail.com (Postfix) with ESMTP id F3B6EA000E for ; Wed, 17 Dec 2025 09:47:20 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=e8o1H7ID; spf=pass (imf25.hostedemail.com: domain of qi.zheng@linux.dev designates 95.215.58.187 as permitted sender) smtp.mailfrom=qi.zheng@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1765964841; a=rsa-sha256; cv=none; b=ybcaYuB3vuib0Li7Ed98MzG0Z+tbhZyW8zKA0uboCkUWTzhpl0kTXo3eg+Bpop7Pl1g+4w /HGU0IUV7DSKzBn5K4jMWtMwN44ZCtz1Iub8005ynMS3sNCALnvMO7sC4OgPg1rnNMqHVT NqGAGNGMDazPl3/KV9YPgKNnx+QXpCY= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=e8o1H7ID; spf=pass (imf25.hostedemail.com: domain of qi.zheng@linux.dev designates 95.215.58.187 as permitted sender) smtp.mailfrom=qi.zheng@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1765964841; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=8PNYJl+4luznSu7Qs41hn6BnOWw9fSYJ1f3qY5qKkjU=; b=pbKxIHDnS/GGKF4GzM6Vi9mFmYqO+gXFycQJtQKillTadX1SdZlCmCVSGAEi66TgnGgnFs rpHdj8m3t59Ggl0I5LnT+UuRtCsgLj9vsKd76F++RS7/+hJXBe+Kux9z0O5IdB0TiF8G3C 0XqTgGnSnJnmAkJI3qqYLgQL0UOu0FQ= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1765964839; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8PNYJl+4luznSu7Qs41hn6BnOWw9fSYJ1f3qY5qKkjU=; b=e8o1H7ID6IwrR/gVd0NtVTo7ZEz4HV3uPypab1CIVzcnpIVs9atrTDUBpW98/QwFghrEEU 5EBqavpncMavIyi2v23cOld40E9HERpVgTZ7omWcpU1XjKqMpN362CMM8Wv9Hk0+oQtTKQ oRI/0dVJv/IYhli7SUrb7JHZnJy6tHc= From: Qi Zheng To: will@kernel.org, aneesh.kumar@kernel.org, npiggin@gmail.com, peterz@infradead.org, dev.jain@arm.com, akpm@linux-foundation.org, david@kernel.org, ioworker0@gmail.com, linmag7@gmail.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-alpha@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-um@lists.infradead.org, Qi Zheng , "James E.J. Bottomley" , Helge Deller Subject: [PATCH v3 5/7] parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE Date: Wed, 17 Dec 2025 17:45:46 +0800 Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Queue-Id: F3B6EA000E X-Rspamd-Server: rspam04 X-Stat-Signature: 7u5fztpinczcto64wxzehnmskgn5rptn X-HE-Tag: 1765964840-696046 X-HE-Meta: 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 hZNhXFZX TG1/TDhOpTkG1jBo84/qO8np1/Vd0/gHuJaqptIl4sU/k6lcT8MNxUsYK6eZ/4uLuKIiJoz9T6cCQHPIRu2hqgrpxteRXWdU2sazim0lb/7gvgE4fP0jJ9MEgdVYfoCMhrZRW2+sK4heb1WwhThfyZof/GfQnLLU/ieYkzdZbQjng5PIyWxUPGTYrqyhDn0HcA9yYkXuVZ8MarmdvSIx2yWA87COjiyXAl3RLL2y583K88WRqzLgy9q6FwnBuLtQs1wNP2z7ZMisBrNdTuvMyMXimrARG2Kz5UZbv5XRnrIJg7O8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Qi Zheng On a 64-bit system, madvise(MADV_DONTNEED) may cause a large number of empty PTE page table pages (such as 100GB+). To resolve this problem, first enable MMU_GATHER_RCU_TABLE_FREE to prepare for enabling the PT_RECLAIM feature, which resolves this problem. Signed-off-by: Qi Zheng Cc: "James E.J. Bottomley" Cc: Helge Deller --- arch/parisc/Kconfig | 1 + arch/parisc/include/asm/tlb.h | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 47fd9662d8005..62d5a89d5c7bc 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -79,6 +79,7 @@ config PARISC select GENERIC_CLOCKEVENTS select CPU_NO_EFFICIENT_FFS select THREAD_INFO_IN_TASK + select MMU_GATHER_RCU_TABLE_FREE select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH select HAVE_ARCH_KGDB diff --git a/arch/parisc/include/asm/tlb.h b/arch/parisc/include/asm/tlb.h index 44235f367674d..4501fee0a8fa4 100644 --- a/arch/parisc/include/asm/tlb.h +++ b/arch/parisc/include/asm/tlb.h @@ -5,8 +5,8 @@ #include #if CONFIG_PGTABLE_LEVELS == 3 -#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) +#define __pmd_free_tlb(tlb, pmd, addr) tlb_remove_ptdesc((tlb), virt_to_ptdesc(pmd)) #endif -#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) +#define __pte_free_tlb(tlb, pte, addr) tlb_remove_ptdesc((tlb), page_ptdesc(pte)) #endif -- 2.20.1