From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Date: Fri, 25 May 2018 14:50:12 +0000 Subject: Re: [PATCH 1/7] core, dma-direct: add a flag 32-bit dma limits Message-Id: <20180525145012.GA3863@kroah.com> List-Id: References: <20180525143512.1466-1-hch@lst.de> <20180525143512.1466-2-hch@lst.de> In-Reply-To: <20180525143512.1466-2-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Christoph Hellwig Cc: Thomas Gleixner , Ingo Molnar , Tony Luck , Fenghua Yu , x86@kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, netdev@vger.kernel.org On Fri, May 25, 2018 at 04:35:06PM +0200, Christoph Hellwig wrote: > Various PCI bridges (VIA PCI, Xilinx PCIe) limit DMA to only 32-bits > even if the device itself supports more. Add a single bit flag to > struct device (to be moved into the dma extension once we around it) "once we around it"? I don't understand, sorry. > to flag such devices and reject larger DMA to them. > > Signed-off-by: Christoph Hellwig > --- > include/linux/device.h | 3 +++ > lib/dma-direct.c | 6 ++++++ > 2 files changed, 9 insertions(+) For the patch, no objection from me: Reviewed-by: Greg Kroah-Hartman