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authorSeth Jennings <sjenning@redhat.com>2014-12-16 11:58:19 -0600
committerJiri Kosina <jkosina@suse.cz>2014-12-22 15:40:49 +0100
commitb700e7f03df5d92f85fa5247fe1f557528d3363d (patch)
treed6da8186d1bd9c42bbd5db9f23deeb1e47bb6dec /kernel/Makefile
parentc5f4546593e9911800f0926c1090959b58bc5c93 (diff)
downloadlinux-sh-b700e7f03df5d92f85fa5247fe1f557528d3363d.tar.gz
livepatch: kernel: add support for live patching
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. [ jkosina@suse.cz: 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 <sjenning@redhat.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Petr Mladek <pmladek@suse.cz> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Miroslav Benes <mbenes@suse.cz> Signed-off-by: Petr Mladek <pmladek@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'kernel/Makefile')
-rw-r--r--kernel/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index a59481a3fa6c..616994f0a76f 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -26,6 +26,7 @@ obj-y += power/
obj-y += printk/
obj-y += irq/
obj-y += rcu/
+obj-y += livepatch/
obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
obj-$(CONFIG_FREEZER) += freezer.o