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Mon, 16 Mar 2026 04:43:59 +0000 (UTC) Received: from dell-per7425-02.rhts.eng.pek2.redhat.com (dell-per7425-02.rhts.eng.pek2.redhat.com [10.73.116.18]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4B3571955E75; Mon, 16 Mar 2026 04:43:49 +0000 (UTC) From: Chunyu Hu To: akpm@linux-foundation.org, david@kernel.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, chuhu@redhat.com, Li Wang Subject: [PATCH v2 1/5] selftests/mm/guard-regions: skip collapse test when thp not enabled Date: Mon, 16 Mar 2026 12:43:31 +0800 Message-ID: <20260316044335.1390608-2-chuhu@redhat.com> In-Reply-To: <20260316044335.1390608-1-chuhu@redhat.com> References: <20260316044335.1390608-1-chuhu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-MFC-PROC-ID: ru5-eFdZUxUuvfv42BYbetU-KHPsbl_1kCA7cuxuc0c_1773636240 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Queue-Id: 24D0B40007 X-Stat-Signature: w7dh6njojgjyu7pn468ktb5r4h66wgqa X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1773636247-739404 X-HE-Meta: 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 dGOV9mRh lsJVpjkwtUL4hA6svS9tdAIqYpPOSrtqVQ7y63XP1ssOcSMbG3H/RX7E5n4JHO7EcdZWHkJkVLfHXfYfuHHHVvCWwtHRsOO7Inml36fS1a4csnNPsRaaHX+xIT/p4sRf+WVrxinrX/+4+r7wm2dDDVXftFat23lPO8LNmRkTvY219cBY7HF2YcmcCQOJUNbSKfTVDDBtPZmLHvog7vinzSJuYS4VyZaN6WW0qxI5eqjxSyNpHiEtkydVVBYvRbyAw7YTU11ENZEq/HPXi0iUowkBhYYTq72bmD7OdLR7WRaFLMQz9So1ViI74Qm4JCNcsj5H86PZtrNArum5mx9WAtGw8/s5ZeuaDaGW0ULwUXtgu1m0PIC5DeGm0WOdOhthpSTInjrUNr8tGRFw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 Reviewed-by: Lorenzo Stoakes (Oracle) Acked-by: David Hildenbrand (Arm) Reviewed-by: Zi Yan CC: Li Wang Signed-off-by: Chunyu Hu --- Changes in v2: - add reviewed by from Zi and Lorenzo - add acked-by from David --- tools/testing/selftests/mm/guard-regions.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/mm/guard-regions.c b/tools/testing/selftests/mm/guard-regions.c index dbd21d66d383..897af9c512f9 100644 --- a/tools/testing/selftests/mm/guard-regions.c +++ b/tools/testing/selftests/mm/guard-regions.c @@ -21,6 +21,7 @@ #include #include #include "vm_util.h" +#include "thp_settings.h" #include "../pidfd/pidfd.h" @@ -2195,6 +2196,9 @@ TEST_F(guard_regions, collapse) char *ptr; int i; + if (!thp_is_enabled()) + SKIP(return, "Transparent Hugepages not available\n"); + /* Need file to be correct size for tests for non-anon. */ if (variant->backing != ANON_BACKED) ASSERT_EQ(ftruncate(self->fd, size), 0); base-commit: f338e77383789c0cae23ca3d48adcc5e9e137e3c -- 2.53.0