Comment 7 for bug 1639924

For the gcc bits I've created:
https://warthogs.atlassian.net/browse/FR-2554

But based on file 'doc/s390-upstream-prerequisites.md' as part of:
https://github.com/dynup/kpatch/pull/1203/commits/48d997f2a39c9151670b254570679b24d40abb7d
"
**Prerequisite gcc patches (all backported to releases/gcc-11 branch):**
- gcc-mirror/gcc@a1c1b7a IBM Z: Define NO_PROFILE_COUNTERS
- gcc-mirror/gcc@0990d93 IBM Z: Use @PLT symbols for local functions in 64-bit mode
- gcc-mirror/gcc@935b522 S/390: New option -mpic-data-is-text-relative
- gcc-mirror/gcc@8753b13 IBM Z: fix section type conflict with -mindirect-branch-table
"
I think it looks quite good for gcc 11.