Re: [PATCH] selftests/livepatch: filter 'taints' from dmesg comparison

[Joe Lawrence <joe.lawrence@redhat.com>]

On 11/7/19 10:24 AM, Miroslav Benes wrote:
>> In my test, I had a kernel tree, but only wanted to build the test modules.
>> Once I did a 'make modules SUBDIR=' or 'make M= ...' KBUILD_EXTMOD got flipped
>> on and the modules lost in-tree status.  No amount of googling could tell me
>> how to build a single in-tree directory of modules :(
> 
> "make lib/livepatch/test_klp_livepatch.ko" should do the trick. "make
> lib/livepatch/" only builds the object files and I haven't found a way to
> make it link .ko modules other than specifying them one by one directly.
> 

Forgot to mention that this works too, but I was looking to script it 
and not have each .ko hardcoded in a series of make commands.  Anyway, 
it's a strange use-case and it was something I was only cooking up for 
an in-house continuous testing scenario.

>> And then it seemed that
>> opening the tests for OOT modules was reasonable anyway.
> 
> That's an interesting idea. If a module is in tree, it is under our
> control. So we know what "testing capabilities" it offers. I guess that
> with OOT testing modules the selftests would have to be smarter.
> 

It would probably go hand in hand with custom test scripts that would 
understand the OOT module capabilities, I think.  I doubt anyone will 
try it (besides me), but the grep filter was there and it was an easy tweak.

-- Joe