How do you make Jetson Nano‘s kernel (version:4.9.140) support kdump

Hi,i want add kdump support in Jetson Nano’s kernel. As described in the documentation: kdump.txt, CONFIG_CRASH_DUMP=y should be set,but there is no this option in menuconfig. can you supply some patches to support the kdump?


Have you try to add CONFIG_CRASH_DUMP=y to …/kernel/kerene-4.9/arch/arm64/configs/tegra_defconfig to build customization kernel to try?

Yes,i do it,it not work.
More importantly, the source code not support kdump. For example i can’t find arch/arm64/kernel/crash_dump.c which exist in other arch directory.