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2048-bit rsa key) header.d=1e100.net header.i=@1e100.net header.b=VjmrzCU1; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=roeck-us.net header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752065AbeBFOsU (ORCPT ); Tue, 6 Feb 2018 09:48:20 -0500 Received: from mail-pl0-f66.google.com ([209.85.160.66]:44496 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752026AbeBFOsT (ORCPT ); Tue, 6 Feb 2018 09:48:19 -0500 X-Google-Smtp-Source: AH8x224Ef6jQdoZDVktwJre9Pffnm3Tbvszs/lLWypVCtZ0qYwYZ8gXDe5XurczxdVBhncYSx4e9JA== Subject: Re: [PATCH 3.18 00/36] 3.18.94-stable review To: Greg Kroah-Hartman , Harsh Shandilya Cc: akpm@linux-foundation.org, ben.hutchings@codethink.co.uk, linux-kernel@vger.kernel.org, lkft-triage@lists.linaro.org, patches@kernelci.org, shuahkh@osg.samsung.com, stable@vger.kernel.org, torvalds@linux-foundation.org References: <20180205182351.774761393@linuxfoundation.org> <20180206103404.GC10790@kroah.com> <20180206131407.GA4222@kroah.com> From: Guenter Roeck Message-ID: <9d4d16bb-4384-4332-3988-c20e449dbda5@roeck-us.net> Date: Tue, 6 Feb 2018 06:48:17 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <20180206131407.GA4222@kroah.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 02/06/2018 05:14 AM, Greg Kroah-Hartman wrote: > On Tue, Feb 06, 2018 at 11:42:15AM +0000, Harsh Shandilya wrote: >> On Tue 6 Feb, 2018, 4:04 PM Greg Kroah-Hartman, >> wrote: >> >>> On Tue, Feb 06, 2018 at 06:48:53AM +0000, Harsh Shandilya wrote: >>>> On Tue 6 Feb, 2018, 12:09 AM Greg Kroah-Hartman, < >>> gregkh@linuxfoundation.org> >>>> wrote: >>>> >>>>> This is the start of the stable review cycle for the 3.18.94 release. >>>>> There are 36 patches in this series, all will be posted as a response >>>>> to this one. If anyone has any issues with these being applied, please >>>>> let me know. >>>>> >>>>> Responses should be made by Wed Feb 7 18:23:41 UTC 2018. >>>>> Anything received after that time might be too late. >>>>> >>>>> The whole patch series can be found in one patch at: >>>>> >>>>> kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.18.94-rc1.gz >>>>> or in the git tree and branch at: >>>>> git:// >>> git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git >>>>> linux-3.18.y >>>>> and the diffstat can be found below. >>>>> >>>>> thanks, >>>>> >>>>> greg k-h >>>>> >>>> >>>> Builds and boots on the OnePlus 3T, no regressions noticed. >>> >>> Yeah! That device is the only reason I keep this tree alive :) >>> >>> thanks for testing and letting me know. >>> >>> greg k-h >>> >> >> Guess I should drop my kernel tree for the device and save you the pain of >> maintaining 3.18 :P > > Heh, maybe :) > >> Atleast CAF has been keeping up with upstream now thanks to your >> kernel-common merges so there's still hope for MSM platform users :) > > That's good to see. Now if only those platform users would actually > update their kernels to these new versions :( > >> P.S. common merge should go in cleanly, both the merge conflicts I had were >> from CAF changes. > > Thanks for letting me know, that's great to hear as I just had a > question from some companies who are worried that taking stable patches > will cause tons of merge issues. It hasn't in my experience, and seeing > reports of this from others is great news. > From merging v4.4 and v4.14 into the respective ChromeOS branches, I would conclude that merging is for the most part easy. Major source of conflicts, if they happen, is that we may already have picked up additional commits from upstream. This is only true, though, if merges are done on a release-by-release basis and if the merge happens shortly after a stable release is available. Otherwise, as time goes by, merges become more and more difficult (almost exponentially over time). Wait for more than 2-3 months between merges and it becomes almost impossible. For reference, the top of tree for both branches is v4.14.16-3823-g597d36f1d331 v4.4.114-12977-ga207b53fe939 meaning there are _lots_ of patches on top of the mainline stable releases. Also, overall, the rate of regressions is quite low (if I recall correctly, somewhere between 3 and 5 in chromeos-4.4, and one so far in chromeos-4.14, ie below 0.1%). Guenter