On Wed, Aug 9, 2017 at 2:14 PM, Josh Poimboeuf <jpoim...@redhat.com> wrote:
> On Wed, Aug 09, 2017 at 09:28:12AM +0200, Juerg Haefliger wrote:
>> Hi,
>> Is there a specific reason why we're using
>> CROSS_COMPILE="$TOOLSDIR/kpatch-gcc " make ...
>> to build the original kernel? This doesn't seem to do anything special
>> unless I'm missing something.
> Good question.  If I remember right, it's for compile speed.  Otherwise,
> when building the patched kernel, make will notice the compiler binary
> changed and it will rebuild everything.

Hmm. OK. But isn't everything rebuilt anyways for the patched kernel?
I'll run some tests to better understand this.

Also, why not build two separate trees for the original and patched
kernels and then diff the trees instead of using the kpatch-gcc magic?


> It would be good to have a comment there.  Pull requests welcome ;-)
> --
> Josh

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