Re: [Xen-devel] [PATCH] tools/livepatch: recognize functions in livepatch.ignore.functions

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

On 12/14/2017 07:18 AM, Elena Ufimtseva wrote:
> Hi Ross
>
> Thanks for the info.
> I actually did look into the KPATCH_IGNORE_FUNCTION code. But.. I
> somehow ended up having this:
>
> #define KPATCH_IGNORE_FUNCTION(_fn) \
> void *__kpatch_ignore_func_##_fn __section(.kpatch.ignore.functions) = (#_fn);
>
> Which apparently caused the symbol not being a function type, but a string(?).
You've got a single # before _fn which causes stringification of the 
macro parameter. Therefore the symbol became a string and not a function.
Cheers,
--
Ross Lagerwall

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