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Thu, 12 Mar 2026 11:26:37 +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-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0B6031800351; Thu, 12 Mar 2026 11:26:27 +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 1/4] selftests/mm/guard-regions: skip collapse test when thp not enabled Date: Thu, 12 Mar 2026 19:26:08 +0800 Message-ID: <20260312112612.633138-2-chuhu@redhat.com> In-Reply-To: <20260312112612.633138-1-chuhu@redhat.com> References: <20260312112612.633138-1-chuhu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-MFC-PROC-ID: ww4JPxgjKaUQ3gV2zuDD6v02wHHzDy2ujTKlI2C7aEI_1773314798 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspam-User: X-Stat-Signature: st93qir5fxgb4dfz8dz538qi6pfuztfy X-Rspamd-Queue-Id: 95B2F80009 X-Rspamd-Server: rspam03 X-HE-Tag: 1773314805-591308 X-HE-Meta: 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 6kThQ3py bWaz5HVnmdKMIhupveqBJbV7R8TtCVsdm6/v2cRij44inG7iYK9mxTMTWewV6a5PSU5Wt1GpANAiMErl/qKhj9vd7Fj32j+s5QG9MBb9AitMAbg1sl9Rn+yVBh1vBWt3jUJmSUcIfJEkmWFNwX8fgAMt1ULpjzDwkW3tuNByHfgoOEBie7YjxpWOC504BP5ZOgBHiiyR7NAJG+VgcOBYvl5Z/labmE6gWh3JXXusp6+sKfXDPQG1qNulY7A4qN4tXLCFE6V5cuskyjI+U7wAAwBUU8cdlxCyghLnWR/FxuIqsk6PCjwINJb2Tkn7CPTXqRX9agi0Zn5hi7872ySNg3/doQPtPiNmXsa2HhWTc4UI6Jh/5uKYDHRiBMg== 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 CC: Li Wang Signed-off-by: Chunyu Hu --- 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: 80234b5ab240f52fa45d201e899e207b9265ef91 -- 2.53.0