This patch series implements a mechanism for scalable exported symbol flags using a separate section called __kflagstab. The series introduces __kflagstab support, removes *_gpl sections in favor of a GPL flag, simplifies symbol resolution during module loading, and adds symbol import protection.
Thank you Petr Pavlu for their valuable feedback. --- Changes from v1: - added a check to ensure __kflagstab is present - added warnings for the obsolete *_gpl sections - moved protected symbol check before ref_module() call - moved protected symbol check failure warning to issue detection point v1: https://lore.kernel.org/all/[email protected]/ Siddharth Nayyar (10): define kernel symbol flags linker: add kflagstab section to vmlinux and modules modpost: create entries for kflagstab module loader: use kflagstab instead of *_gpl sections modpost: put all exported symbols in ksymtab section module loader: remove references of *_gpl sections linker: remove *_gpl sections from vmlinux and modules remove references to *_gpl sections in documentation modpost: add symbol import protection flag to kflagstab module loader: enforce symbol import protection Documentation/kbuild/modules.rst | 11 +-- include/asm-generic/vmlinux.lds.h | 21 ++---- include/linux/export-internal.h | 28 +++++--- include/linux/module.h | 4 +- include/linux/module_symbol.h | 6 ++ kernel/module/internal.h | 5 +- kernel/module/main.c | 112 +++++++++++++++--------------- scripts/mod/modpost.c | 27 +++++-- scripts/module.lds.S | 3 +- 9 files changed, 120 insertions(+), 97 deletions(-) -- 2.51.0.740.g6adb054d12-goog
