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[213.95.11.211]) by mx.google.com with ESMTPS id j197si1746347wmj.66.2019.06.25.04.59.52 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Jun 2019 04:59:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) client-ip=213.95.11.211; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de Received: by newverein.lst.de (Postfix, from userid 2407) id D3FF468B05; Tue, 25 Jun 2019 13:59:21 +0200 (CEST) Date: Tue, 25 Jun 2019 13:59:21 +0200 From: Christoph Hellwig To: Jason Gunthorpe Cc: Christoph Hellwig , Michal Hocko , Dan Williams , =?iso-8859-1?B?Suly9G1l?= Glisse , Ben Skeggs , "linux-mm@kvack.org" , "nouveau@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" , "linux-nvdimm@lists.01.org" , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 18/22] mm: mark DEVICE_PUBLIC as broken Message-ID: <20190625115921.GA3874@lst.de> References: <20190613094326.24093-1-hch@lst.de> <20190613094326.24093-19-hch@lst.de> <20190620192648.GI12083@dhcp22.suse.cz> <20190625072915.GD30350@lst.de> <20190625114422.GA3118@mellanox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190625114422.GA3118@mellanox.com> User-Agent: Mutt/1.5.17 (2007-11-01) 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 Tue, Jun 25, 2019 at 11:44:28AM +0000, Jason Gunthorpe wrote: > Which tree and what does the resolution look like? Looks like in -mm. The current commit in linux-next is: commit 0d23b042f26955fb35721817beb98ba7f1d9ed9f Author: Robin Murphy Date: Fri Jun 14 10:42:14 2019 +1000 mm: clean up is_device_*_page() definitions > Also, I don't want to be making the decision if we should keep/remove > DEVICE_PUBLIC, so let's get an Ack from Andrew/etc? > > My main reluctance is that I know there is HW out there that can do > coherent, and I want to believe they are coming with patches, just > too slowly. But I'd also rather those people defend themselves :P Lets keep everything as-is for now. I'm pretty certain nothing will show up, but letting this linger another release or two shouldn't be much of a problem. And if we urgently feel like removing it we can do it after -rc1.