From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sinmsgout01.his.huawei.com (sinmsgout01.his.huawei.com [119.8.177.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2224239B94E for ; Tue, 3 Mar 2026 10:16:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=119.8.177.36 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772532978; cv=none; b=TtVznawSS6+6Ma8SuYbVpkYGOa9fz8PNazzPPiUUFYcexBq0wM4vaP1hnrUo21V7iNe2gPFv9NWUNtQOsdpn6/gULH34wn5VT5lk3Zvr4Bzg6KyawkjV51Eok9ONKqcoT1F/snwhy6dBhV3OjQils3wdNltgP5lOlaK7JjBjT6k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772532978; c=relaxed/simple; bh=VbwN6i9bKcsRTLYpDZLeVUnXPlssACuW6L22JOdUrik=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FQEPTpIEkdr5ZzltOP3b55oG3VanFXP3/2N0rY4QWx8zQzN+63jeHcVc5GsfWZOowjHMPLjemsk5llEZO9NXgRv5rb5asja8ai9MWMTdQoi5TZ8zh/YB5pIDo1P49jS+wdcHmSjl5fkEd9POI8d3quzHJLTBLcGGMaTd+QXuy2U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=Y8rzHPYP; arc=none smtp.client-ip=119.8.177.36 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="Y8rzHPYP" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=7XrMK7viYh/cii+6p8BcVtBGjQGuMnafZa3dwqHYEDg=; b=Y8rzHPYPG+7GcZ6lLbPv++D3p/Cq6GBeb/6TC9zYildLajCIKFmOba1eZbf4QGV7BXlT8yS8P tYXWKquXuR6svMiQJjrExI5+kDxU67i+EqXPDpXJoJ5uXScHSoXNXVmK/DfTbLKzEnopCjAszYL lo4pPVn9sGExgmGjcT/P54s= Received: from frasgout.his.huawei.com (unknown [172.18.146.33]) by sinmsgout01.his.huawei.com (SkyGuard) with ESMTPS id 4fQB4y0dkWz1P7Qt; Tue, 3 Mar 2026 17:55:45 +0800 (CST) Received: from mail.maildlp.com (unknown [172.18.224.150]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4fQB8S4wnnzJ46nT; Tue, 3 Mar 2026 17:58:48 +0800 (CST) Received: from dubpeml500005.china.huawei.com (unknown [7.214.145.207]) by mail.maildlp.com (Postfix) with ESMTPS id 8DDA94056E; Tue, 3 Mar 2026 17:59:21 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml500005.china.huawei.com (7.214.145.207) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 3 Mar 2026 09:59:14 +0000 Date: Tue, 3 Mar 2026 09:59:13 +0000 From: Jonathan Cameron To: Ryan Roberts CC: Will Deacon , Ard Biesheuvel , Catalin Marinas , Mark Rutland , Linus Torvalds , Oliver Upton , Marc Zyngier , "Dev Jain" , Linu Cherian , , Subject: Re: [PATCH v3 12/13] arm64: mm: Wrap flush_tlb_page() around __do_flush_tlb_range() Message-ID: <20260303095913.0000684c@huawei.com> In-Reply-To: <20260302135602.3716920-13-ryan.roberts@arm.com> References: <20260302135602.3716920-1-ryan.roberts@arm.com> <20260302135602.3716920-13-ryan.roberts@arm.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml500009.china.huawei.com (7.191.174.84) To dubpeml500005.china.huawei.com (7.214.145.207) On Mon, 2 Mar 2026 13:55:59 +0000 Ryan Roberts wrote: > Flushing a page from the tlb is just a special case of flushing a range. > So let's rework flush_tlb_page() so that it simply wraps > __do_flush_tlb_range(). While at it, let's also update the API to take > the same flags that we use when flushing a range. This allows us to > delete all the ugly "_nosync", "_local" and "_nonotify" variants. > > Thanks to constant folding, all of the complex looping and tlbi-by-range > options get eliminated so that the generated code for flush_tlb_page() > looks very similar to the previous version. > > Reviewed-by: Linu Cherian > Signed-off-by: Ryan Roberts Reviewed-by: Jonathan Cameron