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b=A7q8xKWe3Nq1LDRzDIn39uUn/+/x43FmRrrfuiHz7IkbJ87HjVReQdKZyGNwv+HRx i0zgJux75nhcVF/W3MY2n7igA3n42fuavOGUECV7EyHjeq98dcCOM1GmR0P1J3Vae0 NbyOemIExhNm/GAwKjRD6F1wjGiPc6zADsbEXPiEQyhe58u4M/P2Cuw2f0Qk6P3qe0 MtKj63OLbka6tNaD+9M9bAHJ4GJZPTcA9/TQRwZ7qIXQx0vFtP0FhOpk1tnQ7cqsnT U/8VzbnRLmr4Ed/1cfWxGO0hevnmZQ/sGnOTRHvzo8IUBcOqTYBYqFuOjvwTYc+fRY u6ssEF7nk2FWg== Message-ID: Date: Thu, 12 Mar 2026 20:48:52 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RESEND PATCH 1/4] selftests/mm/guard-regions: skip collapse test when thp not enabled To: Chunyu Hu , akpm@linux-foundation.org, shuah@kernel.org, linux-mm@kvack.org, ljs@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, Li Wang References: <20260312114027.634559-1-chuhu@redhat.com> <20260312114027.634559-2-chuhu@redhat.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: 8mh9dmkaou4sxs8foc8144x4tzkxki4j X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: 4B063A000A X-HE-Tag: 1773344941-663820 X-HE-Meta: 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 aP162Pu7 aWPw3D0gXiYyQ4SGQepn0XipXrTacRyc1vFqZpS/ImLeIhrulXH1AYvmM4vQ6ReYLGOLM/EZWnSCLX8EwwkCPuhUVqBjGymfSNLG5+I0Z/UFUGdlpYj+NTr1Xx3IRmABwCIWEIB2jyO+MF2YfmhnD67mbM4qnq2QQLQ507y2W0SNNeh7y7UhXIlWHblRDnHFLAA4+8+Onk0+0Kh9LSLNhX0tJ4UYD7jeBNTSF7QQ2JoAQUuPvXtmQi4d84xH41ftJ8IqPHeVWDjN+gvl8nziLRic9oCUIjeX7xGqpDXJRcN4RbwRaaagL7xjoZw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/12/26 12:40, Chunyu Hu wrote: > When thp is not available, just skip the collape tests to avoid the false > positive. > > Without the change, run with a thp disabled kernel: > ./run_vmtests.sh -t madv_guard > > # # RUN guard_regions.file.multi_vma ... > # # OK guard_regions.file.multi_vma > # ok 89 guard_regions.file.multi_vma > # # RUN guard_regions.file.basic ... > # # OK guard_regions.file.basic > # ok 90 guard_regions.file.basic > # # FAILED: 87 / 90 tests passed. > # # 17 skipped test(s) detected. Consider enabling relevant config options to improve coverage. > # # Totals: pass:70 fail:3 xfail:0 xpass:0 skip:17 error:0 > # [FAIL] > not ok 1 guard-regions # exit=1 > hwpoison_inject > # SUMMARY: PASS=0 SKIP=0 FAIL=1 > > With this change, run with thp disabled kernel: > ./run_vmtests.sh -t madv_guard > > # ok 90 guard_regions.file.basic > # # PASSED: 90 / 90 tests passed. > # # 20 skipped test(s) detected. Consider enabling relevant config options to improve coverage. > # # Totals: pass:70 fail:0 xfail:0 xpass:0 skip:20 error:0 > # [PASS] > ok 1 guard-regions > hwpoison_inject > # SUMMARY: PASS=1 SKIP=0 FAIL=0 > 1..1 > CC: Li Wang > Signed-off-by: Chunyu Hu > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David