On Wed, 16 Mar 2016, Jessica Yu wrote: > Livepatch manages its own relocation sections and symbols in order to be > able to reuse module loader code to write relocations. This removes > livepatch's dependence on separate "dynrela" sections to write relocations > and also allows livepatch to patch modules that are not yet loaded. > > The livepatch Elf relocation section flag (SHF_RELA_LIVEPATCH), > and symbol section index (SHN_LIVEPATCH) allow both livepatch and the > module loader to identity livepatch relocation sections and livepatch > symbols. > > Livepatch relocation sections are marked with SHF_RELA_LIVEPATCH to > indicate to the module loader that it should not apply that relocation > section and that livepatch will handle them. > > The SHN_LIVEPATCH shndx marks symbols that will be resolved by livepatch. > The module loader ignores these symbols and does not attempt to resolve > them. > > The values of these Elf constants were selected from OS-specific > ranges according to the definitions from glibc. > > Signed-off-by: Jessica Yu <jeyu@xxxxxxxxxx> Reviewed-by: Miroslav Benes <mbenes@xxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
