From: Greg Kroah-Hartman <email@example.com> To: Scott Branden <firstname.lastname@example.org> Cc: Linux ARM <email@example.com>, LKML <firstname.lastname@example.org>, BCM Kernel Feedback <email@example.com> Subject: Re: 5.10 LTS Kernel: 2 or 6 years? Date: Tue, 26 Jan 2021 08:29:25 +0100 [thread overview] Message-ID: <YA/E1bHRmZb50MlS@kroah.com> (raw) In-Reply-To: <firstname.lastname@example.org> On Mon, Jan 25, 2021 at 11:55:11AM -0800, Scott Branden wrote: > Hi All, > > The 5.10 LTS kernel being officially LTS supported for 2 years presents a problem: > why would anyone select a 5.10 kernel with 2 year LTS when 5.4 kernel has a 6 year LTS. Because they want to use all of the latest stuff that 5.10 provides them. Don't you want faster and more secure kernels for your devices? > Yet, various unofficial reports indicate it will be supported for 6 years. Rumors are nice, aren't they :) > And AOSP has already declared the use > of 5.10 kernel in their Android S and T releases. Publically? Where? And is that really the name of the new Android releases, I thought they switched to numbers now (hence the naming of the current android-common kernel branches, marketing is fun...) > Is there some way we could make the LTS support more clear. > A 2 year declaration is not LTS any more. Not true at all, a "normal" stable kernel is dropped after the next release happens, making their lifespan about 4 months long. 2 years is much longer than 4 months, so it still is a "long term supported" kernel in contrast, correct? > If 5.10 is "actually" going to be supported for 6 years it would be quite valuable to make such a declaration. > https://www.kernel.org/category/releases.html Why? What would that change? Ok, seriously, this happens every year, and every year we go through the same thing, it's not like this is somehow new, right? I want to see companies _using_ the kernel, and most importantly, _updating_ their devices with it, to know if it is worth to keep around for longer than 2 years. I also, hopefully, want to see how those companies will help me out in the testing and maintenance of that kernel version in order to make supporting it for 6 years actually possible. So, are you planning on using 5.10? Will you will be willing to help out in testing the -rc releases I make to let me know if there are any problems, and to help in pointing out and backporting any specific patches that your platforms need for that kernel release? When I get this kind of promises and support from companies, then I am glad to bump up the length of the kernel support from 2 to 6 years, and I mark it on the web site. Traditionally this happens in Febuary/March once I hear from enough companies. Can I count on your support in this endeavor? Also, a meta-comment. Please reconsider using a single kernel version for longer than 2 years on systems that you actively support and maintain. It's generally a bad idea unless you are stuck with millions of out-of-tree code that something like a customer-unfriendly SoC vendor provides. If you are stuck in that type of situation, well they have decided to spend extra money to keep their out-of-tree code alive, so why are they forcing you to also spend extra money and energy? I can go on about this topic at length if you want me to, I have lots of examples of how to, and not to, maintain a kernel for a device for a long period of time... thanks, greg k-h
next prev parent reply other threads:[~2021-01-26 17:35 UTC|newest] Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-25 19:55 Scott Branden 2021-01-26 2:50 ` Adam Borowski 2021-01-26 7:29 ` Greg Kroah-Hartman [this message] 2021-01-26 17:35 ` Florian Fainelli 2021-01-26 18:30 ` Scott Branden 2021-01-26 18:51 ` Greg Kroah-Hartman 2021-01-26 20:15 ` Willy Tarreau 2021-02-17 9:40 ` Greg Kroah-Hartman 2021-02-17 19:48 ` Scott Branden 2021-02-18 7:43 ` Greg Kroah-Hartman 2021-02-18 11:31 ` Willy Tarreau 2021-02-18 14:15 ` Jari Ruusu 2021-02-18 14:29 ` Greg Kroah-Hartman 2021-02-18 20:55 ` Pavel Machek 2021-02-18 22:43 ` Ondrej Zary 2021-02-19 8:00 ` Pavel Machek 2021-02-19 8:30 ` Greg Kroah-Hartman 2021-02-18 14:33 ` Willy Tarreau 2021-02-18 17:19 ` Jari Ruusu 2021-02-18 17:22 ` Russell King - ARM Linux admin 2021-02-18 17:44 ` Greg Kroah-Hartman 2021-02-19 7:10 ` Jari Ruusu 2021-02-19 8:22 ` Greg Kroah-Hartman 2021-02-19 10:31 ` Jari Ruusu 2021-02-19 10:37 ` Greg Kroah-Hartman 2021-02-19 10:57 ` Jari Ruusu 2021-02-19 11:16 ` Greg Kroah-Hartman 2021-02-19 15:23 ` Jari Ruusu 2021-02-20 13:29 ` Jari Ruusu 2021-02-20 16:05 ` Greg Kroah-Hartman 2021-02-20 17:06 ` Willy Tarreau 2021-02-21 11:38 ` Jari Ruusu 2021-02-19 16:50 ` Theodore Ts'o 2021-02-18 17:16 ` Florian Fainelli 2021-02-18 12:51 ` Pavel Machek 2021-02-18 16:51 ` Sasha Levin 2021-02-18 17:21 ` Florian Fainelli 2021-02-18 17:53 ` Greg Kroah-Hartman 2021-02-18 17:57 ` Florian Fainelli 2021-02-18 18:20 ` Willy Tarreau 2021-02-18 18:36 ` Greg Kroah-Hartman 2021-02-18 20:16 ` Scott Branden 2021-02-18 21:00 ` Willy Tarreau 2021-02-18 22:38 ` Scott Branden 2021-02-18 21:39 ` Sasha Levin 2021-02-18 22:00 ` Florian Fainelli 2021-02-18 22:26 ` Scott Branden 2021-02-19 8:25 ` Greg Kroah-Hartman 2021-02-19 15:05 ` Florian Fainelli 2021-02-19 15:53 ` Greg Kroah-Hartman 2021-02-19 17:44 ` Florian Fainelli 2021-02-22 14:17 ` Greg Kroah-Hartman 2021-02-18 17:42 ` Florian Fainelli 2021-02-18 18:13 ` Willy Tarreau 2021-02-18 10:04 ` Pavel Machek 2021-02-19 8:54 ` Hanjun Guo 2021-02-19 9:08 ` Greg Kroah-Hartman 2021-02-20 7:02 ` Hanjun Guo 2021-02-20 9:53 ` Greg Kroah-Hartman 2021-02-23 2:14 ` Hanjun Guo 2021-02-19 14:45 ` Nikolai Kondrashov 2021-02-26 8:03 ` Hanjun Guo 2021-02-26 11:21 ` Nikolai Kondrashov 2021-02-22 14:00 ` Nishanth Aravamudan 2021-02-22 14:24 ` Greg Kroah-Hartman
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