Re: Linux stable: 4.19 vs 4.14
Thanks for the response, Valdis. Thanks, Avinash On Sat, Nov 2, 2019 at 10:54 AM Valdis Klētnieks wrote: > > On Fri, 01 Nov 2019 14:24:26 -0700, Avinash Patil said: > > Hi Greg, > > I'm not Greg, but... :) > > > I am curious as to why Linux4.19 which was released later has earlier > > EOL than 4.14? > > Not all stable releases are kept going for the same amount of time. Most go > EOL as soon as a few newer releases have come out, while every 5th one or so > is > kept going for longer. > > > If we have to choose one version over another for BSP, which one is > > preferred? > > If you're planning to dump unsupported crap on customers, it doesn't matter. > Let's face it - if you're not going to provide updates, when a stable stream > EOLs doesn't matter if you ship 4.19.81 or 4.14.151, because your customers > aren't ever going to get 4.19.104 or 4.14.183. > > But you probably want to base the BSP on 4.19 so that your customers get the > benefit > of all the stuff that got fixed between 4.14 and 4.19. Remember that only a > *very* small > fraction of fixes - those that qualify under > Documentation/process/stable-kernel-rules.rst > get included in the stable tree. > > And of course, unless you have no intention of building similar boards in the > future, > it's a good idea to upstream any custom drivers. That way, when your > follow-on > BSP gets based to the 5.11 kernel, your drivers are already in-tree, and even > more > importantly, already updated to any 5.11 kernel API changes, because anybody > who > changed a kernel API was required to update your driver for you. > > (And no, "We only plan to sell 50,000 so it's not worth it" is not a valid > excuse. There's > plenty of stuff that's in-tree that's very niche with only a few users. > Heck, we kept > an entire architecture (the i386 Voyager) around for 2 machines. Not two > models, > two physical machines. We finally dropped it when James Bottomley was unable > to > mix-and-match parts from the two machines to get either one to boot) > ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Linux stable: 4.19 vs 4.14
On Fri, 01 Nov 2019 14:24:26 -0700, Avinash Patil said: > Hi Greg, I'm not Greg, but... :) > I am curious as to why Linux4.19 which was released later has earlier > EOL than 4.14? Not all stable releases are kept going for the same amount of time. Most go EOL as soon as a few newer releases have come out, while every 5th one or so is kept going for longer. > If we have to choose one version over another for BSP, which one is preferred? If you're planning to dump unsupported crap on customers, it doesn't matter. Let's face it - if you're not going to provide updates, when a stable stream EOLs doesn't matter if you ship 4.19.81 or 4.14.151, because your customers aren't ever going to get 4.19.104 or 4.14.183. But you probably want to base the BSP on 4.19 so that your customers get the benefit of all the stuff that got fixed between 4.14 and 4.19. Remember that only a *very* small fraction of fixes - those that qualify under Documentation/process/stable-kernel-rules.rst get included in the stable tree. And of course, unless you have no intention of building similar boards in the future, it's a good idea to upstream any custom drivers. That way, when your follow-on BSP gets based to the 5.11 kernel, your drivers are already in-tree, and even more importantly, already updated to any 5.11 kernel API changes, because anybody who changed a kernel API was required to update your driver for you. (And no, "We only plan to sell 50,000 so it's not worth it" is not a valid excuse. There's plenty of stuff that's in-tree that's very niche with only a few users. Heck, we kept an entire architecture (the i386 Voyager) around for 2 machines. Not two models, two physical machines. We finally dropped it when James Bottomley was unable to mix-and-match parts from the two machines to get either one to boot) pgpOVNBdH8Cea.pgp Description: PGP signature ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Linux stable: 4.19 vs 4.14
Hi Greg, I am looking at Linux kernel page: https://www.kernel.org/category/releases.html I am curious as to why Linux4.19 which was released later has earlier EOL than 4.14? If we have to choose one version over another for BSP, which one is preferred? Thanks, Avinash ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
