Messages in this thread | | | Date | Sat, 11 Feb 2017 08:54:59 +0100 (CET) | From | Jiri Kosina <> | Subject | Re: Mistake in include IS_ENABLED(CONFIG_LIVEPATCH) |
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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
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