Re: [PATCH 0/3] selftests/bpf: Fixes for out-of-tree builds

["Nico Pache (Red Hat)" <nico.pache@linux.dev>]

On 9/21/26 3:42 PM, Eduard Zingerman wrote:
> On Mon, 2026-09-21 at 15:15 -0600, Nico Pache (Red Hat) wrote:
>>
>> On 9/21/26 3:04 PM, Eduard Zingerman wrote:
>>> On Mon, 2026-09-21 at 14:40 -0600, Nico Pache (Red Hat) wrote:
>>>
>>> ...
>>>
>>>> Given your series was defferred, and there is a "rewrite" coming, what would
>>>> be the best approach to working together (between us three) to get these
>>>> fixes in that series too. 
>>>
>>> The, "rewrite", as you call it, had landed today.
>>
>> oh thats great news. I checked on Friday and didnt see it. Thanks for the update :)
>>
>>> So the series in question can be re-spun.
>>> Regarding your patch on top of it, it appears you can just post is separately.
>>> However, I am inclined to be confrontational towards changes like this one.
>>> The purpose of the selftests makefile is to run selftests as appropriate
>>> for current tip of the kernel tree using a very specific kernel configuration.
>>> Main users of this makefile are BPF developers and BPF CI.
>>
>> Yeah we are trying to reincorporate BPF as part of our CI. It has bit rotted in
>> the Fedora env, and our large amount of build variant is where things are
>> starting to go wrong. We need to build selftests for multiple variants, and be
>> able to specify which variant we are building for. Hence the out-of-tree build
>> with specific vmlinux.
> 
> Why can't you build the kernel and the selftests in the same out of tree location?
> The change you are proposing is contained, but it's a death by thousand cuts,
> the selftests makefile is quite a Frankenstein's monster already.

Due to incremental builds, and tool building in different env's

> 
>> Is there any other approach you'd suggest? I personally dont work on BPF, but am
>> trying to cleanup/fix our selftests builds for Upstream/Fedora CI.
> 
> How many Fedora-specific kernel patches do you carry already?

So far its just the series Im replying to here, and the commit I appended.

> 
>> Thanks,
>> -- Nico
>>
>>> Support for distros customizing the makefile is a non-goal.
>>> The "PERMISSIVE" change done enough damage already.
>>>
>>> ...