On Fri, 21 Jul 2023 at 21:08, Steve Langasek <steve.langa...@ubuntu.com> wrote: > > On Fri, Jul 21, 2023 at 07:33:58PM +0100, Dimitri John Ledkov wrote: > > If it is a concern that v5.15 jammy kernel may potentially be used > > after partial / incomplete upgrade to Mantic, we can opt into using XZ > > compressed firmware or I can backport ZSTD firmware support to jammy > > GA kernel - it is a trivial patch (given that ZSTD itself is otherwise > > available and used by the jammy kernel). > > The scenario here is that the user has just upgraded to mantic, so they get > the new linux firmware and the new kernel; they reboot to mantic, but there > is a regression of some kind; they reboot back to the jammy kernel (which is > the N-1 kernel on their system) to debug it, and that kernel has regressed > support for their hardware because it can no longer load the needed firmware > from the root filesystem. > > This is a realistic enough scenario that I think it is worth backporting the > zstd support onto jammy's 5.15 kernel.
This portion will be tracked in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2028550 submitted in https://lists.ubuntu.com/archives/kernel-team/2023-July/141355.html As previously described it was fairly trivial backport of 3 files changed, 98 insertions(+), 8 deletions(-) -- okurrr, Dimitri -- ubuntu-devel mailing list ubuntu-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel