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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 55F80C61DA3 for ; Tue, 21 Feb 2023 17:58:50 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4PLn8m4htnz3cLm for ; Wed, 22 Feb 2023 04:58:48 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4PLn8B3Nn1z306Y for ; Wed, 22 Feb 2023 04:58:18 +1100 (AEDT) Received: by verein.lst.de (Postfix, from userid 2407) id AE4E268B05; Tue, 21 Feb 2023 18:58:13 +0100 (CET) Date: Tue, 21 Feb 2023 18:58:13 +0100 From: Christoph Hellwig To: Jiaxun Yang Subject: Re: [PATCH 4/7] dma-mapping: Always provide dma_default_coherent Message-ID: <20230221175813.GC15247@lst.de> References: <20230221124613.2859-1-jiaxun.yang@flygoat.com> <20230221124613.2859-5-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230221124613.2859-5-jiaxun.yang@flygoat.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tsbogend@alpha.franken.de, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, palmer@dabbelt.com, paul.walmsley@sifive.com, robin.murphy@arm.com, linuxppc-dev@lists.ozlabs.org, hch@lst.de, m.szyprowski@samsung.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tue, Feb 21, 2023 at 12:46:10PM +0000, Jiaxun Yang wrote: > dma_default_coherent can be useful for determine default coherency > even on arches without noncoherent support. How?