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Mon, 5 Oct 2020 22:02:12 +0000 (UTC) IronPort-SDR: wT5zC9b7Cmf/JdEe5cOZnZp/QKIL/BJIXJ50+CNoF9aoOQBC8qfx5t0KPY45BOeXVFqaBc6Ntm CK7z5XnJuF/A== X-IronPort-AV: E=McAfee;i="6000,8403,9765"; a="164229796" X-IronPort-AV: E=Sophos;i="5.77,340,1596524400"; d="scan'208";a="164229796" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Oct 2020 14:50:10 -0700 IronPort-SDR: HGCM3TQcZ1XEA8IhISPY2vUnO9KKPYUFa/u1fqRdeaX/m6BqApXMSlxLg6x24yzftKgVANW8gr YTsx0OH0JTAQ== X-IronPort-AV: E=Sophos;i="5.77,340,1596524400"; d="scan'208";a="526895646" Received: from gtudori-mobl.ger.corp.intel.com (HELO localhost) ([10.252.34.57]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Oct 2020 13:02:32 -0700 Date: Mon, 5 Oct 2020 23:02:28 +0300 From: Jarkko Sakkinen To: Dave Hansen Cc: Greg KH , Christoph Hellwig , x86@kernel.org, linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Matthew Wilcox , Jethro Beekman , Haitao Huang , Chunyang Hui , Jordan Hand , Nathaniel McCallum , Seth Moore , Darren Kenny , Sean Christopherson , Suresh Siddha , andriy.shevchenko@linux.intel.com, asapek@google.com, bp@alien8.de, cedric.xing@intel.com, chenalexchen@google.com, conradparker@google.com, cyhanish@google.com, haitao.huang@intel.com, kai.huang@intel.com, kai.svahn@intel.com, kmoy@google.com, ludloff@google.com, luto@kernel.org, nhorman@redhat.com, puiterwijk@redhat.com, rientjes@google.com, tglx@linutronix.de, yaozhangx@google.com, mikko.ylinen@intel.com Subject: Re: [PATCH v39 11/24] x86/sgx: Add SGX enclave driver Message-ID: <20201005200228.GA43617@linux.intel.com> References: <20201003045059.665934-1-jarkko.sakkinen@linux.intel.com> <20201003045059.665934-12-jarkko.sakkinen@linux.intel.com> <20201003143925.GB800720@kroah.com> <20201005084554.GA3403@infradead.org> <20201005114250.GB181338@linux.intel.com> <20201005115030.GA682263@kroah.com> <20201005142345.GA6232@linux.intel.com> <20201005150244.GA2288878@kroah.com> <4f66422c-a7ac-2962-c836-eb2ad06a11ce@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4f66422c-a7ac-2962-c836-eb2ad06a11ce@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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 Mon, Oct 05, 2020 at 09:40:52AM -0700, Dave Hansen wrote: > On 10/5/20 8:02 AM, Greg KH wrote: > > On Mon, Oct 05, 2020 at 05:23:45PM +0300, Jarkko Sakkinen wrote: > >> [*] One thing I've been wondering for a long time is that, why new code > >> should have the copyright platters in the first place? I get it for > >> pre-Git era but now there is a cryptographic log of authority. > > Go talk to your corporate lawyers about this, it is one of the most > > common cargo-cult patterns around :) > > For this patch, though, it seems like we should just update the dates > instead of removing them. Already done. I updated them yesterday as: Copyright(c) 2016-20 Intel Corporation. Changing from '//' to '/* ... */' is not yet. > If I look at the last 1000 "^+.*Copyright" lines added to the kernel, > 997 of them have a year. So, weird or not, it's a pretty standard > convention. We'd need a slightly more broad conversation before we > decide to nix these dates. > > Pure speculation: Copyright protection, at least in the US, is not > forever. I _think_ it's 75 years or something. That protection starts > when the work is created and is independent of when it gets merged into > Linux. So, if we did something weird like merge a driver written 10 > years ago, it would only be protected for 65 more years after we merge > it. In other words, git history _might_ be irrelevant for copyright > protection. /Jarkko