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([122.99.82.10]) by smtp.gmail.com with ESMTPSA id c9sm417271pfn.3.2019.06.26.17.21.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Jun 2019 17:21:59 -0700 (PDT) Subject: Re: [PATCH 3/4] powerpc/powernv: remove unused NPU DMA code To: Christoph Hellwig Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Oliver O'Halloran , Frederic Barrat , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org References: <20190625145239.2759-1-hch@lst.de> <20190625145239.2759-4-hch@lst.de> <7bde96e0-7bc5-d5fe-f151-52c29660633c@ozlabs.ru> <20190626074935.GA25452@lst.de> From: Alexey Kardashevskiy Openpgp: preference=signencrypt Autocrypt: addr=aik@ozlabs.ru; keydata= mQINBE+rT0sBEADFEI2UtPRsLLvnRf+tI9nA8T91+jDK3NLkqV+2DKHkTGPP5qzDZpRSH6mD EePO1JqpVuIow/wGud9xaPA5uvuVgRS1q7RU8otD+7VLDFzPRiRE4Jfr2CW89Ox6BF+q5ZPV /pS4v4G9eOrw1v09lEKHB9WtiBVhhxKK1LnUjPEH3ifkOkgW7jFfoYgTdtB3XaXVgYnNPDFo PTBYsJy+wr89XfyHr2Ev7BB3Xaf7qICXdBF8MEVY8t/UFsesg4wFWOuzCfqxFmKEaPDZlTuR 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c7E5M+/NpslPCmYnDjs5qg0/3ihh6XuOGggZQOqrYPC3PnsNs3NxirwOkVPQgO6mXxpuifvJ DG9EMkK8IBXnLulqVk54kf7fE0jT/d8RTtJIA92GzsgdK2rpT1MBKKVffjRFGwN7nQVOzi4T XrB5p+6ML7Bd84xOEGsj/vdaXmz1esuH7BOZAGEZfLRCHJ0GVCSssg== Message-ID: <027a5095-a22c-2799-8ff6-42d0bc4d2bc9@ozlabs.ru> Date: Thu, 27 Jun 2019 10:21:55 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20190626074935.GA25452@lst.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26/06/2019 17:49, Christoph Hellwig wrote: > On Wed, Jun 26, 2019 at 10:44:38AM +1000, Alexey Kardashevskiy wrote: >> >> >> On 26/06/2019 00:52, Christoph Hellwig wrote: >>> None of these routines were ever used anywhere in the kernel tree >>> since they were added to the kernel. >> >> >> So none of my comments has been addressed. Nice. > > Which comment? Last time I asked you complaint "it is still used in > exactly the same way as before" which you later clarified that you > have a hidden out of tree user somewhere, and you only objected to It is not hidden, anyone can download and inspect that GPL driver. > the word "dead". That has been fixed and there were no further > comments. You still have it in the cover letter so at very least 3/4 is not a part of this patchset then. And I still want to see a formal statement about out-of-tree drivers support/tolerance. If you manage to remove this code, I'll have to post a revert (again and again) but I would rather know the exact list of what we do and what we do not do about such drivers and if the list 1) exists 2) is reasonable then I could try to come up with a better solution or point others to the policy and push them to do the right thing. Right now it is just you pretending that the nVidia driver does not exist, this is not helping. Thanks, -- Alexey