I originally posted the patch in a different form [1] even before Masahiro's changes. I've been testing this solution since December last year and posted it in March this year, after I made sure everything was working fine. This patch was tested by Oleksandr and he also didn't report any objections. [2] Masahiro notified me about the planned changes [3] and asked me to resend this patch, adjusted to those changes, which I did. My current logs: lucjan@archlinux ~ $ zgrep CONFIG_DEBUG_INFO /proc/config.gz CONFIG_DEBUG_INFO=y # CONFIG_DEBUG_INFO_REDUCED is not set # CONFIG_DEBUG_INFO_COMPRESSED is not set # CONFIG_DEBUG_INFO_SPLIT is not set CONFIG_DEBUG_INFO_DWARF4=y CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF_MODULES=y lucjan@archlinux ~ $ zgrep CONFIG_MODULE_COMPRESS_ZSTD /proc/config.gz CONFIG_MODULE_COMPRESS_ZSTD=y CONFIG_MODULE_COMPRESS_ZSTD_LEVEL=19 Pay no attention to CONFIG_MODULE_COMPRESS_ZSTD_LEVEL as this is not in the upstream, it's an additional patch I use. The only difference - I don't use clang. Maybe those who use will comment on this. I relied on the opinions of Oleksander and a dozen other users who reported no errors in using zstd module compression. [1] https://marc.info/?l=linux-kbuild&m=161710402402989&w=2 [2] https://marc.info/?l=linux-kbuild&m=161710503403517&w=2 [3] https://marc.info/?l=linux-kbuild&m=161780602730829&w=2
