s390/kpatch-build: add -fPIE flag with -mno-pic-data-is-text-relative
-mno-pic-data-is-text-relative compiler flag expects -fPIC/-fPIE flag
along with it. Since kernel commit 778666df60f0 ("s390: compile
relocatable kernel without -fPIE"), the -fPIC/-fPIE flag is missing when
creating kpatch module and this can lead to the following error:
cc1: error: ‘-mno-pic-data-is-text-relative’ cannot be used without
‘-fpic’/‘-fPIC’.
Previously kpatch-build didnt show up this issue, as the previous kernel
was built with -fPIE.
However, kpatch build could fail with kernel commit 778666df60f0 ("s390:
compile relocatable kernel without -fPIE"), where -fPIE is not included.
Hence, include it in kpatch-build for all kernels < 6.10.0
Note:
Latest s390 kernel is built with -fPIC flag.
i.e. kernel commit 00cda11d3b2e ("s390: Compile kernel with -fPIC and
link with -no-pie"). Hence, there is no need to explicitly add it again
in kpatch-build.
git tag --contains 00cda11d3b2e next-20240430 next-20240502 next-20240607 next-20240613 v6.10-rc1 v6.10-rc2 v6.10-rc3