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 X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AE7DC4332B for ; Tue, 16 Mar 2021 08:16:16 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B4F0665001 for ; Tue, 16 Mar 2021 08:16:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4F0665001 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=g85OK/lFvV5X3q6rb8GpJ2EjKNdOZ3/atDyM94n5YL4=; b=I+31Deqi/uUEYc3eKeldv7bCO Rm5JGBfxdvTEbevZPLimQFXkYQxmNNaFgwYmH+CjVtgT4l9/nZYr3K0KHO49EecSxUMAuQpHzHV/T V+QwiCfSDZ1Fs79Fj/oWr4V25gYxYEUbHz0v/Whsz5K5IQbZ0/qkApibmYngCQ8ja7aV+FTURhUHw 4WcebVQEbFn67bmHn6l6F9pcTtDui6qa1vZIhFSDkKVpr3x3fitJSUSfudo9ByvYXJFOIR9F4KWko I3GNDiVW8Q7H53Cur0fregAVgLpFv2i+hP/iP7XG4UM4GkU4A7h3wVN68CNkR0c4L0S3vG3ynmIoa 7GlwU4gUw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lM4rv-0007bL-7C; Tue, 16 Mar 2021 08:15:59 +0000 Received: from verein.lst.de ([213.95.11.211]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lM4rr-0007aB-HL for linux-nvme@lists.infradead.org; Tue, 16 Mar 2021 08:15:57 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 6154568C4E; Tue, 16 Mar 2021 09:15:54 +0100 (CET) Date: Tue, 16 Mar 2021 09:15:53 +0100 From: Christoph Hellwig To: Logan Gunthorpe Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Stephen Bates , Christoph Hellwig , Dan Williams , Jason Gunthorpe , Christian =?iso-8859-1?Q?K=F6nig?= , Ira Weiny , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Jakowski Andrzej , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin Subject: Re: [RFC PATCH v2 07/11] dma-mapping: Add flags to dma_map_ops to indicate PCI P2PDMA support Message-ID: <20210316081553.GC16595@lst.de> References: <20210311233142.7900-1-logang@deltatee.com> <20210311233142.7900-8-logang@deltatee.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210311233142.7900-8-logang@deltatee.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210316_081555_664727_5C02F6E9 X-CRM114-Status: GOOD ( 11.22 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Mar 11, 2021 at 04:31:37PM -0700, Logan Gunthorpe wrote: > +int dma_pci_p2pdma_supported(struct device *dev) > +{ > + const struct dma_map_ops *ops = get_dma_ops(dev); > + > + return !ops || ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED; > +} > +EXPORT_SYMBOL(dma_pci_p2pdma_supported); EXPORT_SYMBOL_GPL like all new DMA APIs. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme