Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965720AbeAJPaX (ORCPT + 1 other); Wed, 10 Jan 2018 10:30:23 -0500 Received: from verein.lst.de ([213.95.11.211]:47576 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933435AbeAJPaU (ORCPT ); Wed, 10 Jan 2018 10:30:20 -0500 Date: Wed, 10 Jan 2018 16:30:17 +0100 From: Christoph Hellwig To: Robin Murphy Cc: Christoph Hellwig , iommu@lists.linux-foundation.org, linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, Guan Xuetao , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, x86@kernel.org, Konrad Rzeszutek Wilk , linux-snps-arc@lists.infradead.org, linux-m68k@lists.linux-m68k.org, patches@groups.riscv.org, linux-metag@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Michal Simek , linux-parisc@vger.kernel.org, linux-cris-kernel@axis.com, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 27/33] dma-direct: use node local allocations for coherent memory Message-ID: <20180110153017.GD17790@lst.de> References: <20180110080027.13879-1-hch@lst.de> <20180110080027.13879-28-hch@lst.de> <3672aa56-b85c-5d2c-0c0e-709031b0c0a0@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3672aa56-b85c-5d2c-0c0e-709031b0c0a0@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: On Wed, Jan 10, 2018 at 12:06:22PM +0000, Robin Murphy wrote: > On 10/01/18 08:00, Christoph Hellwig wrote: >> To preserve the x86 behavior. > > And combined with patch 10/22 of the SWIOTLB refactoring, this means > SWIOTLB allocations will also end up NUMA-aware, right? Great, that's what > we want on arm64 too :) Well, only for swiotlb allocations that can be satisfied by dma_direct_alloc. If we actually have to fall back to the swiotlb buffers there is not node affinity yet.