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 09C1ACF2567 for ; Wed, 19 Nov 2025 07:33:24 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6AD9B6B000E; Wed, 19 Nov 2025 02:33:23 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 685816B009D; Wed, 19 Nov 2025 02:33:23 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5C2166B00A8; Wed, 19 Nov 2025 02:33:23 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 4C3DF6B000E for ; Wed, 19 Nov 2025 02:33:23 -0500 (EST) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 1219F1403C6 for ; Wed, 19 Nov 2025 07:33:23 +0000 (UTC) X-FDA: 84126541086.17.D37BBAE Received: from out-179.mta0.migadu.com (out-179.mta0.migadu.com [91.218.175.179]) by imf13.hostedemail.com (Postfix) with ESMTP id 4EF5920002 for ; Wed, 19 Nov 2025 07:33:21 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=UPZyoHTW; spf=pass (imf13.hostedemail.com: domain of qi.zheng@linux.dev designates 91.218.175.179 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=1763537601; 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=1wFQmEL78frI2x75OaPuTwVep/AaThz1vmwTAC53VtprXiMIsDakPj+sRUHVx7s9BnnWuB lyz8XMC2cLhfP0/LPwyIT78F3WJi3okocdAb4YKi/nb4wJTZt8MQxqjWdyjx1uet8Chm6l IuvDX15XPSCCMi9Ls9jnGrWyagtb4hU= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=UPZyoHTW; spf=pass (imf13.hostedemail.com: domain of qi.zheng@linux.dev designates 91.218.175.179 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=1763537601; a=rsa-sha256; cv=none; b=wETQnVlOD9IyBcYku21hm/u1iVzUHhmfWyRJqE3ILkb+O2bhVC/3ZMfMxC1UcjzQXKxh8Q j0W9hf4dN1lVA1Iyuio29DnyjA8Q0Ga5uignxFQYfy7BeqGOkb7OYEORKLBhoDrEWONudi epuiO31V2rK8F63tFB4LR3mI22UvRks= 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=1763537598; 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=UPZyoHTWlvcojbrasT0m6wZAA4vVJvUtdfGcqOc224298mAJZj8RgoKfcBwgHvUNwVVlYY xUXSg/BFyvnGHDg1OT0FG3OvfiUEgAljF44L6ANy/FULPK7Dli6T59Yj/3HWliWxACip+2 cxcFG/pEkqS5KVkntRXLnkKsYrtQDIY= 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 v2 5/7] parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE Date: Wed, 19 Nov 2025 15:31:22 +0800 Message-ID: <74f0e72f11347656a9de0d4b9e2bccc17e4338a7.1763537007.git.zhengqi.arch@bytedance.com> In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 4EF5920002 X-Stat-Signature: kpqdrgrdzfd1e1hs8mm77g4smskmdnnf X-Rspam-User: X-HE-Tag: 1763537601-270503 X-HE-Meta: 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 qaHO0O94 Cp0xGKGkWCgcEbUTubhVp5qBIm0ER8MxOIuAV4Fim2gvK3Qru5lYtD0bL1r+kcL3gTFpXbLi+VuthbR+yCbZEHwVpOsOMybaFedUH1LemogUoc9wkVu8MzSPlSGVjSw6C1rixeAIa7yibTnBhWWLVyibmd7XSnPwlXfGiWW1ebzl8J42yPNstF3krtf0lnVstIMwT9CM1TNEsHpCpVHbcUTeFarZF+LDW6CLTyNVice5Gugh8xNMXu1xBILcnbVEhLV5s7wJZTQx/HG6B6OYQzqaamV5fQAY0kv/w 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