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2015-02-04livepatch: rename config to CONFIG_LIVEPATCHJosh Poimboeuf1-3/+3
Rename CONFIG_LIVE_PATCHING to CONFIG_LIVEPATCH to make the naming of the config and the code more consistent. Signed-off-by: Josh Poimboeuf <[email protected]> Reviewed-by: Jingoo Han <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2015-01-20livepatch: change ARCH_HAVE_LIVE_PATCHING to HAVE_LIVE_PATCHINGMiroslav Benes1-2/+2
Change ARCH_HAVE_LIVE_PATCHING to HAVE_LIVE_PATCHING in Kconfigs. HAVE_ bools are prevalent there and we should go with the flow. Suggested-by: Andrew Morton <[email protected]> Signed-off-by: Miroslav Benes <[email protected]> Acked-by: Josh Poimboeuf <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2015-01-06livepatch: kconfig: use bool instead of booleanChristoph Jaeger1-2/+2
Keyword 'boolean' for type definition attributes is considered deprecated and should not be used anymore. No functional changes. Reference: http://lkml.kernel.org/r/[email protected] Reference: http://lkml.kernel.org/r/[email protected] Signed-off-by: Christoph Jaeger <[email protected]> Reviewed-by: Petr Mladek <[email protected]> Reviewed-by: Jingoo Han <[email protected]> Acked-by: Josh Poimboeuf <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2014-12-22livepatch: kernel: add support for live patchingSeth Jennings1-0/+18
This commit introduces code for the live patching core. It implements an ftrace-based mechanism and kernel interface for doing live patching of kernel and kernel module functions. It represents the greatest common functionality set between kpatch and kgraft and can accept patches built using either method. This first version does not implement any consistency mechanism that ensures that old and new code do not run together. In practice, ~90% of CVEs are safe to apply in this way, since they simply add a conditional check. However, any function change that can not execute safely with the old version of the function can _not_ be safely applied in this version. [ [email protected]: due to the number of contributions that got folded into this original patch from Seth Jennings, add SUSE's copyright as well, as discussed via e-mail ] Signed-off-by: Seth Jennings <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Reviewed-by: Miroslav Benes <[email protected]> Reviewed-by: Petr Mladek <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Signed-off-by: Miroslav Benes <[email protected]> Signed-off-by: Petr Mladek <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>