Am 11.12.24 um 18:28 schrieb Dragos Tatulea:
My preferred scenario for the next steps would be the following:
1) It would be great if we could get a simple mitigation patch upstream, that the distros could
easily backport. This would avoid our customers experiencing performance regression when they
upgrade their distro versions. (e.g. from RHEL8 to RHEL9 or RHEL10 just as an example)
Stupid question on my behalf: why can't this patch be taken as a distro
patch for s390 and carried over over releases? This way the kernel
upgrade pain would be avoided.
This is not how distros work today. All code/patches must come from upstream
and all code/patches must be cross-architecture. There are exceptions, but
only for very critical things.
Furthermore, the right answer to avoid upgrade pain is to fix things upstream.
So lets try to find a solution that we can integrate.
Christian
