From nobody Thu Dec 18 20:18:39 2025 Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 306211A9B45 for ; Wed, 18 Dec 2024 13:05:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734527133; cv=none; b=Rd8BWlEu4jEDT3X3ThsoedBvDz0QCWaijY/exvvuiUWE9/VhAZbQJwhacVSxWKZMQ6OI9Rns39DeZaMVZJBrSqkB7KJCe+I+y5y8F1T/+GbX/ulAiFT8SbMBbxtqDVJIw80hzJQoOu/C4kgMU6sscGGpiaZntrad/vFfLJQJ9Ww= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734527133; c=relaxed/simple; bh=0I+QujqJYcMfTXp+SDj87j/Ufo0cc3GvWv0DHo8HPg4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Uiq0OfZZjSOusC1hOB5F+sKNlGYhRrjXK0vTsa739KGQwrd5apEW7LDeolFUkACJ1rRzI5qSA2oyjA005VpubwpFz31fwOPKws4VZ0Ifz+2F9d1ct5wN8HjHnF2GbkoRbcH+ed+jqtrcCaQZe4iFYjJ6OoQfNPUc24no9X0ZZ/w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com; spf=pass smtp.mailfrom=bytedance.com; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b=QwakrvzG; arc=none smtp.client-ip=209.85.214.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bytedance.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b="QwakrvzG" Received: by mail-pl1-f170.google.com with SMTP id d9443c01a7336-215770613dbso43926635ad.2 for ; Wed, 18 Dec 2024 05:05:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1734527130; x=1735131930; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hRj0wkIcDyLmKPONLgLEnODGJVOQ/lxkeDhrLguGMRU=; b=QwakrvzGeOtDAhoMk7lS6yrRYlUxBgr8N4lg/jpkFpGhWalPfk9OUnhnRVhI8NkNyO FHa4geNBLlRlYOYbYFt5V9RtMqN1z0Z9gvBByNeeWxCo5GmlxO4vVEx1Zi2A4uda3SSc NWOs/MAGVs4TgvltwLoBNar34n0Yw7lvh+EAkPwf6rLPMwWSO9M6Bg/2eSxXx0fhYWBy BH92oSNMD9Hvj6FrghwnciZwYzIIpQwJxd0z4EiULc50xNmJ4d/MQMsAy2nwt+EvFsLW oM6aNujn/fYwFDgNt+N5nJjewuyivw13vtBYUKu+qWSPOdtWFQXN0iHPPY9pQFvGZgvx RgJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734527130; x=1735131930; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hRj0wkIcDyLmKPONLgLEnODGJVOQ/lxkeDhrLguGMRU=; b=h1LZIYXutv5UVGKfNCULYXFMJkjdtAHUdPLrsuPVrAqmh0bDWFcibWyoZRYIzmUpYA 8VudZCnxHhzzikn3/vx6jh/Z8clsdoFA6bsMzP3DtEql0SUZCsV97ZOFpzOgy/OjlRdp KetVGUYnx94LYf1TITpojGQO+6TmTRasxqftT5mK70qrXf9p9lVlFp5LP8ja9J9Tf8zO CoTRepKMqQiHq29mFeIcoXkzk7j1D4bCPMINo85/lycrUqARKoZDjx18uKn16yuspcRn AayTqHwomlkFxXYyZtRBhgNRXN5cQSgwCJgteG8ZkyilYzL+xTQwe6+HICKKXDogkno7 pLTw== X-Forwarded-Encrypted: i=1; AJvYcCV08s6C1XLn/wGfvXNRI9URAJqaNGwLgjNHBmn/zYmNGWUrq6SAED679TFanPdSj5yageK7oUsIywA2LBk=@vger.kernel.org X-Gm-Message-State: AOJu0YyR9baf1xwvl33L6JGlOnRLtZz9MTohmA1zkkcC7nJlDq9ov1AP vcFppn9SY2c0uaYemCmL78U6s8HMLyh60nVHNOBRT2S49CLvn9ISF13JVJGOoZ0= X-Gm-Gg: ASbGncuaNU3trphVa6aY/Pua+8UTUHUycMQ8/U9hZJLoL6S+OnvFe91BONR3nLDyTdG Y/qiO83WicHpGv47u/rydOjLnPEWD9TyY9gUItrzudia+6kQwALZprkz4G4KMBZRPFp5Ftm5eoR ysZ6mN0XVhnf7ehGCWoQKszXYbINFtGnOexaSI28kenvdjZhQGmXk3ISZo5rI9fAJDXJPHuFr8G JDWUrouNto13//f5k/YUQPSloDEVF7YokD8602wRNZP0qpIwolRoPzTCp2e43C//4eP+hl7lhXO c5SIWn+WvgKjWPeneo/bPg== X-Google-Smtp-Source: AGHT+IEbMQUiOWkQtVsukFUm2ZLuTFY97EKfs/PZuqMM+WxRQxlasXxPYQ7Z03KXqwqNdfJrdRWLVA== X-Received: by 2002:a17:902:e5ca:b0:215:4394:40b5 with SMTP id d9443c01a7336-218d724abe7mr34796235ad.43.1734527130325; Wed, 18 Dec 2024 05:05:30 -0800 (PST) Received: from C02DW0BEMD6R.bytedance.net ([139.177.225.238]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-218a1db755dsm75751825ad.42.2024.12.18.05.05.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2024 05:05:29 -0800 (PST) From: Qi Zheng To: peterz@infradead.org, tglx@linutronix.de, david@redhat.com, jannh@google.com, hughd@google.com, yuzhao@google.com, willy@infradead.org, muchun.song@linux.dev, vbabka@kernel.org, lorenzo.stoakes@oracle.com, akpm@linux-foundation.org, rientjes@google.com, vishal.moola@gmail.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qi Zheng , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 03/15] arm64: pgtable: use mmu gather to free p4d level page table Date: Wed, 18 Dec 2024 21:04:39 +0800 Message-Id: X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Like other levels of page tables, also use mmu gather mechanism to free p4d level page table. Signed-off-by: Qi Zheng Originally-by: Peter Zijlstra (Intel) Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/include/asm/pgalloc.h | 2 -- arch/arm64/include/asm/tlb.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgal= loc.h index 679c530549327..58cc260b6bee8 100644 --- a/arch/arm64/include/asm/pgalloc.h +++ b/arch/arm64/include/asm/pgalloc.h @@ -100,8 +100,6 @@ static inline void p4d_free(struct mm_struct *mm, p4d_t= *p4d) if (pgtable_l5_enabled()) __p4d_free(mm, p4d); } - -#define __p4d_free_tlb(tlb, p4d, addr) p4d_free((tlb)->mm, p4d) #else static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t p4dp, pgdval_t = prot) { diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h index a947c6e784ed2..445282cde9afb 100644 --- a/arch/arm64/include/asm/tlb.h +++ b/arch/arm64/include/asm/tlb.h @@ -111,4 +111,18 @@ static inline void __pud_free_tlb(struct mmu_gather *t= lb, pud_t *pudp, } #endif =20 +#if CONFIG_PGTABLE_LEVELS > 4 +static inline void __p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4dp, + unsigned long addr) +{ + struct ptdesc *ptdesc =3D virt_to_ptdesc(p4dp); + + if (!pgtable_l5_enabled()) + return; + + pagetable_p4d_dtor(ptdesc); + tlb_remove_ptdesc(tlb, ptdesc); +} +#endif + #endif --=20 2.20.1