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[2003:cb:c702:4100:a064:1ded:25ec:cf2f]) by smtp.gmail.com with ESMTPSA id 1-20020a05600c22c100b003ede06f3178sm3967481wmg.31.2023.03.20.03.25.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Mar 2023 03:25:44 -0700 (PDT) Message-ID: <4ab36009-51c0-6583-4948-b267f8fbf32a@redhat.com> Date: Mon, 20 Mar 2023 11:25:43 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH v4 2/2] selftests/mm: Smoke test UFFD_FEATURE_WP_UNPOPULATED To: Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Nadav Amit , Axel Rasmussen , Paul Gofman , Muhammad Usama Anjum , Mike Rapoport , Andrea Arcangeli , Andrew Morton References: <20230309223711.823547-1-peterx@redhat.com> <20230309223711.823547-3-peterx@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20230309223711.823547-3-peterx@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 6EE4340004 X-Stat-Signature: jh43ofxpbw8dq8dt61y4bfggyffpachh X-Rspam-User: X-HE-Tag: 1679307948-326578 X-HE-Meta: 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 2k1Rt6a4 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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