From nobody Tue Apr 7 18:01:02 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D68523BFE20 for ; Thu, 12 Mar 2026 11:26:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773314810; cv=none; b=f3gqfatIFgzA+hVWEBsRav8XiK2reqybNoDBpx2ywT3cj7SESs+3hW4IVntKViueT6NLrIVxEkffHGXzWgKE2YEazK2YwIBFLuUGnp8OMPFwlfahJ9Uus1bxQIjNlyBnj+/M/G/96FxR/EIpYmOLF/3ZQh5hV3/YIFwIgqJj/qg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773314810; c=relaxed/simple; bh=Hv8FWWrJbyY27UAT5exVyh5mxhQipixUB7544wYP5Hc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fuOWI+BfuxY7r9/yhk99GUv8br93BQMm+1rKbJcUw21wO2WUluIAmAdvM3aHuKHjQuJTe5augxjqT4p71lxrapdl0Y1nG1cPkKCXCVfZAI2Z5W6/VkfMJ2eQtT4sJwe9IYbm0qaSuQbg0XTG6Yy+80v8+NySchdwlX4XfaoFQxQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=XZcF8hc9; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XZcF8hc9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1773314807; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RS4GMvKlK4/Sj9p49EgJ5m59kYkjl/i0vUA6l6Qn/oU=; b=XZcF8hc9WSIYuFktTde2Di03mJ5sHMKyfYeC7x44A/h/rK+rlIj/mdsxdXsUbMh2JLXYvx WkPttIqjJIr9/fru9RN6Bff+/QkCuva+sBQ75SPmW8t5mLA1EhDcJgKncEDcynnxb7HqeJ XB64ytAbfLjr8psuBdjrIETdKVR+REQ= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-655-bmMlgpqgOG-GIAMR6SmlmA-1; Thu, 12 Mar 2026 07:26:41 -0400 X-MC-Unique: bmMlgpqgOG-GIAMR6SmlmA-1 X-Mimecast-MFC-AGG-ID: bmMlgpqgOG-GIAMR6SmlmA_1773314798 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 7F7021800629; 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Content-Type: text/plain; charset="utf-8" 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 option= s to improve coverage. # # Totals: pass:70 fail:3 xfail:0 xpass:0 skip:17 error:0 # [FAIL] not ok 1 guard-regions # exit=3D1 hwpoison_inject # SUMMARY: PASS=3D0 SKIP=3D0 FAIL=3D1 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 option= s 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=3D1 SKIP=3D0 FAIL=3D0 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/sel= ftests/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" =20 #include "../pidfd/pidfd.h" =20 @@ -2195,6 +2196,9 @@ TEST_F(guard_regions, collapse) char *ptr; int i; =20 + 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 !=3D ANON_BACKED) ASSERT_EQ(ftruncate(self->fd, size), 0); base-commit: 80234b5ab240f52fa45d201e899e207b9265ef91 --=20 2.53.0