Core dump does not contain the section ".reg"

In our port, we have implemented core dump support in the Linux Kernel as follow: https://github.com/fontamsoc/linux/commit/b6d6b0e2df6996ef67eb976ea880f5aaa8... We enable core dumping using: ulimit -S -c unlimited echo '/tmp/%e_%p_%h_%t.core' > /proc/sys/kernel/core_pattern Core dump generated does not contain the section ".reg". Any idea what else needs to be enabled in the Linux Kernel to have the section ".reg" generated in the core dump file ?