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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 C43BAC282D8 for ; Wed, 30 Jan 2019 15:49:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E358218A4 for ; Wed, 30 Jan 2019 15:49:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731589AbfA3PtZ (ORCPT ); Wed, 30 Jan 2019 10:49:25 -0500 Received: from 8bytes.org ([81.169.241.247]:35894 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726439AbfA3PtZ (ORCPT ); Wed, 30 Jan 2019 10:49:25 -0500 Received: by theia.8bytes.org (Postfix, from userid 1000) id 42238301; Wed, 30 Jan 2019 16:49:23 +0100 (CET) Date: Wed, 30 Jan 2019 16:49:23 +0100 From: Joerg Roedel To: "Lendacky, Thomas" Cc: "Michael S . Tsirkin" , Jason Wang , Konrad Rzeszutek Wilk , Christoph Hellwig , Jens Axboe , "virtualization@lists.linux-foundation.org" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "jfehlig@suse.com" , "Grimm, Jon" , "Singh, Brijesh" , "jroedel@suse.de" Subject: Re: [PATCH 4/5] virtio: Introduce virtio_max_dma_size() Message-ID: <20190130154922.GO32526@8bytes.org> References: <20190129084342.26030-1-joro@8bytes.org> <20190129084342.26030-5-joro@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Tom, On Wed, Jan 30, 2019 at 03:10:29PM +0000, Lendacky, Thomas wrote: > On 1/29/19 2:43 AM, Joerg Roedel wrote: > > +size_t virtio_max_dma_size(struct virtio_device *vdev) > > +{ > > + size_t max_segment_size = SIZE_MAX; > > + > > + if (vring_use_dma_api(vdev)) > > + max_segment_size = dma_max_mapping_size(&vdev->dev); > > + > > + return max_segment_size; > > +} > > When I build with these patches and with the virtio devices as modules I > get a build failure. Looks like this needs an EXPORT_SYMBOL_GPL(). Thanks for pointing that out, I added the missing EXPORTs and will send a new version shortly. Regards, Joerg