From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH] xen: introduce xen_vring_use_dma Date: Mon, 29 Jun 2020 02:33:39 -0400 Message-ID: <20200629023225-mutt-send-email-mst@kernel.org> References: <20200624050355-mutt-send-email-mst@kernel.org> <20200624163940-mutt-send-email-mst@kernel.org> <20200624181026-mutt-send-email-mst@kernel.org> <20200626110629-mutt-send-email-mst@kernel.org> <20200629022124-mutt-send-email-mst@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" To: Peng Fan Cc: "jgross@suse.com" , Stefano Stabellini , "konrad.wilk@oracle.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "iommu@lists.linux-foundation.org" , dl-linux-imx , "xen-devel@lists.xenproject.org" , "boris.ostrovsky@oracle.com" , "linux-arm-kernel@lists.infradead.org" List-Id: virtualization@lists.linuxfoundation.org On Mon, Jun 29, 2020 at 06:25:41AM +0000, Peng Fan wrote: > > > > > Anyway, re-reading the last messages of the original thread [1], > > > > > it looks like Peng had a clear idea on how to fix the general issue. > > > > > Peng, what happened with that? > > > > > > We shrinked the rpmsg reserved area to workaround the issue. > > > So still use the dma apis in rpmsg. > > > > > > But here I am going to address domu android trusty issue using virtio. > > > > My suggestion is to first of all fix DMA API so it works properly. > > Could you please elaborate more details? > > You mean the DMA API usage of rpmsg? Or xen domu dma_ops? > > Thanks, > Peng. Not 100% sure but I think xen dma ops. -- MST