diff options
| author | Jiri Kosina <[email protected]> | 2023-04-26 22:52:34 +0200 |
|---|---|---|
| committer | Jiri Kosina <[email protected]> | 2023-04-26 22:52:34 +0200 |
| commit | cdc780f044a803aff8845b949f800f0f3d095d5f (patch) | |
| tree | 6695a80568f6b4aef414070f17859f434e229957 /include/linux/moduleloader.h | |
| parent | 38518593ec55e897abda4b4be77b2ec8ec4447d1 (diff) | |
| parent | 37386669887d3f2ccf021322c5558353d20f2387 (diff) | |
Merge branch 'for-6.4/amd-sfh' into for-linus
- assorted functional fixes for amd-sfh driver (Basavaraj Natikar)
Diffstat (limited to 'include/linux/moduleloader.h')
| -rw-r--r-- | include/linux/moduleloader.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h index 7b4587a19189..03be088fb439 100644 --- a/include/linux/moduleloader.h +++ b/include/linux/moduleloader.h @@ -75,6 +75,23 @@ int apply_relocate_add(Elf_Shdr *sechdrs, unsigned int symindex, unsigned int relsec, struct module *mod); +#ifdef CONFIG_LIVEPATCH +/* + * Some architectures (namely x86_64 and ppc64) perform sanity checks when + * applying relocations. If a patched module gets unloaded and then later + * reloaded (and re-patched), klp re-applies relocations to the replacement + * function(s). Any leftover relocations from the previous loading of the + * patched module might trigger the sanity checks. + * + * To prevent that, when unloading a patched module, clear out any relocations + * that might trigger arch-specific sanity checks on a future module reload. + */ +void clear_relocate_add(Elf_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me); +#endif #else static inline int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, |