On Sat, 11 Feb 2017, Denys Fedoryshchenko wrote: > I noticed that sample of livepatch is not working in 4.9.9, because in > include, > linux/livepatch.h > it is: > #if IS_ENABLED(CONFIG_LIVEPATCH) > > while config option is: > CONFIG_HAVE_LIVEPATCH=y > > After editing livepatch.h sample module compiles fine > > Probably that's just a typo?
There are two config variables. CONFIG_HAVE_LIVEPATCH is set by those architectures for which livepatching implementation exists. CONFIG_LIVEPATCH is the actual config option turning the support in kernel on/off. What you are seeing is that if you have kernel configuration that has livepatching (CONFIG_LIVEPATCH) turned off, the sample module doesn't compile for it either. I'd say it's not unexpected behavior. -- Jiri Kosina SUSE Labs
