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Date:   Mon, 11 Dec 2023 17:32:20 +0000
From:   Mark Brown <broonie@kernel.org>
To:     David Hildenbrand <david@redhat.com>
Cc:     Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org,
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        John Hubbard <jhubbard@nvidia.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test
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On Mon, Dec 11, 2023 at 05:53:59PM +0100, David Hildenbrand wrote:

> > > (3) avoids dirtying the tree as a "make headers_install" would, but it also
> > > means that each test that makes use of new uapi has to update the relevant
> > > headers (what people working on QEMU are used to).

> > Note that you can do an out of tree build to avoid dirtying things.

> Yes, but apparently the simple "make headers_install" will dirty the kernel.

> See (and ideally comment on)

> https://lkml.kernel.org/r/20231209020144.244759-1-jhubbard@nvidia.com

I mean, I guess people who don't want to install the headers are just
not going to be able to build a bunch of tests?  There definitely are a
bunch of tests where it's not needed so I can see why people would not
like being forced to do the headers step if they're only interested in
those tests.

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