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[198.145.29.99]) by mx.google.com with ESMTPS id c82si1317860pfb.32.2019.06.26.20.35.52 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Jun 2019 20:35:52 -0700 (PDT) Received-SPF: pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) client-ip=198.145.29.99; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b="qJNVSV/g"; spf=pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org Received: from localhost.localdomain (c-73-223-200-170.hsd1.ca.comcast.net [73.223.200.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C898C216E3; Thu, 27 Jun 2019 03:35:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561606552; bh=VbXYrl8hV0yD1BgA3FSNiW43CpbVpvSODNnRganJGDE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=qJNVSV/gh5CVGeGNXpkcW2nF9iUxd1Sdk2X1TV3BnRqByggZqSGbDMq/6dRMBaEd6 X2eUMCkVnjulZ29brgN5QAbJUKPSXyQbRJD2zzaU60IjlrKzh1AKlvGVn63QYi9OzC IK+TVy8Lf1kt5G+0QGXbfgv6unH4vFb+A9uGD3oE= Date: Wed, 26 Jun 2019 20:35:51 -0700 From: Andrew Morton To: Jason Gunthorpe Cc: Christoph Hellwig , Mark Rutland , Robin Murphy , "linux-mm@kvack.org" , "will.deacon@arm.com" , "catalin.marinas@arm.com" , "anshuman.khandual@arm.com" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Michal Hocko Subject: Re: [PATCH v3 0/4] Devmap cleanups + arm64 support Message-Id: <20190626203551.4612e12be27be3458801703b@linux-foundation.org> In-Reply-To: <20190626154532.GA3088@mellanox.com> References: <20190626073533.GA24199@infradead.org> <20190626123139.GB20635@lakrids.cambridge.arm.com> <20190626153829.GA22138@infradead.org> <20190626154532.GA3088@mellanox.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 26 Jun 2019 15:45:47 +0000 Jason Gunthorpe wrote: > On Wed, Jun 26, 2019 at 08:38:29AM -0700, Christoph Hellwig wrote: > > On Wed, Jun 26, 2019 at 01:31:40PM +0100, Mark Rutland wrote: > > > On Wed, Jun 26, 2019 at 12:35:33AM -0700, Christoph Hellwig wrote: > > > > Robin, Andrew: > > > > > > As a heads-up, Robin is currently on holiday, so this is all down to > > > Andrew's preference. > > > > > > > I have a series for the hmm tree, which touches the section size > > > > bits, and remove device public memory support. > > > > > > > > It might be best if we include this series in the hmm tree as well > > > > to avoid conflicts. Is it ok to include the rebase version of at least > > > > the cleanup part (which looks like it is not required for the actual > > > > arm64 support) in the hmm tree to avoid conflicts? > > > > > > Per the cover letter, the arm64 patch has a build dependency on the > > > others, so that might require a stable brnach for the common prefix. > > > > I guess we'll just have to live with the merge errors then, as the > > mm tree is a patch series and thus can't easily use a stable base > > tree. That is unlike Andrew wants to pull in the hmm tree as a prep > > patch for the series. > > It looks like the first three patches apply cleanly to hmm.git .. > > So what we can do is base this 4 patch series off rc6 and pull the > first 3 into hmm and the full 4 into arm.git. We use this workflow often > with rdma and netdev. > > Let me know and I can help orchestate this. Well. Whatever works. In this situation I'd stage the patches after linux-next and would merge them up after the prereq patches have been merged into mainline. Easy.