linux-kernel - Re: [PATCH v4 2/2] selftests/mm: Smoke test UFFD_FEATURE_WP

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Message-ID: <4ab36009-51c0-6583-4948-b267f8fbf32a@redhat.com>
Date:   Mon, 20 Mar 2023 11:25:43 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Peter Xu <peterx@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Nadav Amit <nadav.amit@...il.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Paul Gofman <pgofman@...eweavers.com>,
        Muhammad Usama Anjum <usama.anjum@...labora.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v4 2/2] selftests/mm: Smoke test
 UFFD_FEATURE_WP_UNPOPULATED

On 09.03.23 23:37, Peter Xu wrote:
> Enable it by default on the stress test, and add some smoke tests for the
> pte markers on anonymous.

Would it make sense to make kernel support optional and test both paths 
-- once with the feature enabled (if available on the kernel we're 
testing) and once with the feature disabled?

-- 
Thanks,

David / dhildenb