From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: use generic DMA mapping code in powerpc V4 Date: Wed, 6 Feb 2019 16:15:05 +0100 Message-ID: <20190206151505.GA31065@lst.de> References: <20190129163415.GA14529@lst.de> <96762cd2-65fc-bce5-8c5b-c03bc3baf0a1@xenosoft.de> <20190201080456.GA15456@lst.de> <9632DCDF-B9D9-416C-95FC-006B6005E2EC@xenosoft.de> <594beaae-9681-03de-9f42-191cc7d2f8e3@xenosoft.de> <20190204075616.GA5408@lst.de> <20190204123852.GA10428@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Christian Zigotzky Cc: Christoph Hellwig , Olof Johansson , linux-arch@vger.kernel.org, Darren Stevens , linux-kernel@vger.kernel.org, Julian Margetson , linux-mm@kvack.org, iommu@lists.linux-foundation.org, Paul Mackerras , linuxppc-dev@lists.ozlabs.org List-Id: iommu@lists.linux-foundation.org On Wed, Feb 06, 2019 at 02:45:34PM +0100, Christian Zigotzky wrote: > I patched the source code from the Git 'powerpc-dma.6' with your patch > today. Unfortunately the P.A. Semi Ethernet doesn't work with the patched > Git kernel. > > After that I tried it with the patch applied over the working setup again > (powerpc/dma: use the dma_direct mapping routines). Unfortunately after > compiling > and booting, the P.A. Semi Ethernet doesn't work either. The last good one was 29e7e2287e196f48fe5d2a6e017617723ea979bf ("dma-direct: we might need GFP_DMA for 32-bit dma masks"), if I remember correctly. powerpc/dma: use the dma_direct mapping routines was the one that you said makes the pasemi ethernet stop working. Can you post the dmesg from the failing runs?