01 Apr, 2016
1 commit
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Reuse module loader code to write relocations, thereby eliminating the need
for architecture specific relocation code in livepatch. Specifically, reuse
the apply_relocate_add() function in the module loader to write relocations
instead of duplicating functionality in livepatch's arch-dependent
klp_write_module_reloc() function.In order to accomplish this, livepatch modules manage their own relocation
sections (marked with the SHF_RELA_LIVEPATCH section flag) and
livepatch-specific symbols (marked with SHN_LIVEPATCH symbol section
index). To apply livepatch relocation sections, livepatch symbols
referenced by relocs are resolved and then apply_relocate_add() is called
to apply those relocations.In addition, remove x86 livepatch relocation code and the s390
klp_write_module_reloc() function stub. They are no longer needed since
relocation work has been offloaded to module loader.Lastly, mark the module as a livepatch module so that the module loader
canappropriately identify and initialize it.Signed-off-by: Jessica Yu
Reviewed-by: Miroslav Benes
Acked-by: Josh Poimboeuf
Acked-by: Heiko Carstens # for s390 changes
Signed-off-by: Jiri Kosina
04 Feb, 2015
1 commit
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Rename CONFIG_LIVE_PATCHING to CONFIG_LIVEPATCH to make the naming of
the config and the code more consistent.Signed-off-by: Josh Poimboeuf
Reviewed-by: Jingoo Han
Signed-off-by: Jiri Kosina
24 Dec, 2014
1 commit
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Fix a few typos in the livepatch-sample.c usage example comments and add
some whitespace to make the comments a little more legible.Reported-by: Udo Seidel
Signed-off-by: Josh Poimboeuf
Signed-off-by: Jiri Kosina
22 Dec, 2014
1 commit
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Add a sample live patching module.
Signed-off-by: Seth Jennings
Reviewed-by: Miroslav Benes
Reviewed-by: Petr Mladek
Reviewed-by: Masami Hiramatsu
Signed-off-by: Jiri Kosina
