From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 36400322B92; Thu, 22 Jan 2026 17:02:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769101364; cv=none; b=hKVbO1C4WY8C0VTOEaEilxBYLwzmC/CThmv4Ysa9QVdN77q4bJe6u+nNxq02m2ZrNANut/F975iTNk5yU20fFDs5hAMms02XzvpR9Rtv8DmDu2FqS3m7BHSC52j9+xyZJk9UQLAGWoOrOrbYC39M31dlsnTSR4x0y5ci+Er7X4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769101364; c=relaxed/simple; bh=BgKeU0+i1Hvesaxk8V9I6y2ZYneBAgd07tVwTaWux1o=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=AcNTWxpqTprSF0mGrIeFDt54oyzK24i2JTU3yBf1VHinuv+b+KuD0ellQEg9rkaDzS2wQQkOeQgDaV6m7VmufvquUVTzvLzNrUoemUOb0+ClR33WrzVGtdX+dLm3iKAUDPLdGJNDj365tHU8BEScdkFJMXq+meGY3rlzkqAeWko= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EAD981476; Thu, 22 Jan 2026 09:02:27 -0800 (PST) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2B71A3F632; Thu, 22 Jan 2026 09:02:33 -0800 (PST) From: Kevin Brodsky To: linux-mm@kvack.org, linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Andrew Morton , David Hildenbrand , Dev Jain , Lorenzo Stoakes , Mark Brown , Ryan Roberts , Shuah Khan Subject: [PATCH v3 0/9] Various mm kselftests improvements/fixes Date: Thu, 22 Jan 2026 17:02:15 +0000 Message-ID: <20260122170224.4056513-1-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.51.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Various improvements/fixes for the mm kselftests: - Patch 1-3 extend support for more build configurations: out-of-tree $KDIR, cross-compilation, etc. - Patch 4-7 fix issues related to faulting in pages, introducing a new helper for that purpose. - Patch 8 fixes the value returned by pagemap_ioctl (PASS was always returned, which explains why the issue fixed in patch 6 went unnoticed). - Patch 9 improves the exit code of pfnmap. Net results: - 1 test no longer fails (patch 7) - 3 tests are no longer skipped (patch 4) - More accurate return values for whole suites (patch 8, 9) - Extra tests are more likely to be built (patch 1-3) --- v2..v3: - Patch 5: new patch [David Hildenbrand] - Patch 6: make the helper take a number of pages + pagesize, rename to force_read_pages() [David] - Patch 7: improved page count calculation (avoiding floating-point helper) - Patch 7: added Fixes tag [David] - Patch 9: open the file only once and save the fd [David] - Collected R-b/A-b v2: https://lore.kernel.org/all/20260107164842.3289559-1-kevin.brodsky@arm.com/ v1..v2: - New patches: 1, 4, 5, 8 v1: https://lore.kernel.org/all/20251216142633.2401447-1-kevin.brodsky@arm.com/ --- Cc: Andrew Morton Cc: David Hildenbrand Cc: Dev Jain Cc: Lorenzo Stoakes Cc: Mark Brown Cc: Ryan Roberts Cc: Shuah Khan --- Kevin Brodsky (9): selftests/mm: default KDIR to build directory selftests/mm: remove flaky header check selftests/mm: pass down full CC and CFLAGS to check_config.sh selftests/mm: fix usage of FORCE_READ() in cow tests selftests/mm: check that FORCE_READ() succeeded selftests/mm: introduce helper to read every page selftests/mm: fix faulting-in code in pagemap_ioctl test selftests/mm: fix exit code in pagemap_ioctl selftests/mm: report SKIP in pfnmap if a check fails tools/testing/selftests/mm/Makefile | 8 +- tools/testing/selftests/mm/check_config.sh | 3 +- tools/testing/selftests/mm/cow.c | 43 +++++++-- tools/testing/selftests/mm/hugetlb-madvise.c | 9 +- tools/testing/selftests/mm/page_frag/Makefile | 2 +- tools/testing/selftests/mm/pagemap_ioctl.c | 15 ++- tools/testing/selftests/mm/pfnmap.c | 93 +++++++++++-------- .../selftests/mm/split_huge_page_test.c | 6 +- tools/testing/selftests/mm/vm_util.h | 7 ++ 9 files changed, 109 insertions(+), 77 deletions(-) base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7 -- 2.51.2