Messages in this thread | | | Date | Fri, 21 Nov 2014 16:27:57 +0100 (CET) | From | Jiri Kosina <> | Subject | Re: [PATCHv3 2/3] kernel: add support for live patching |
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On Fri, 21 Nov 2014, Josh Poimboeuf wrote:
> I think we can use "depends on HAVE_FENTRY" to accomplish this, since > CC_USING_FENTRY gets set by the top level kernel Makefile if > CONFIG_HAVE_FENTRY is set.
The problem is that HAVE_FENTRY is set automatically on x86_64, no matter whether your actual compiler supports it or not.
CC_USING_FENTRY is defined if and only if the actual currently used compiler supports it, but that can't be expressed in Kconfig.
-- Jiri Kosina SUSE Labs
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