From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B049242B753; Mon, 11 May 2026 16:33:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778517198; cv=none; b=W+tzutaEbAo4/wR4/two27bKcwHquIoOszTGI7LvE3zk5JlPyzIjHTGc3rfhoSD7dD+W2jdVQXyFMq8+iwBlL3iRAMrz7CQcaEnfEvPAz4QBCIYPQXzj9MwdpuoTnkBy25UYgUIbwT8SMt6InLNDFQPluVJbON57hIFKZwkGzJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778517198; c=relaxed/simple; bh=M5ApfsSYjafUfJ9qgwq5XnAC9wVA2+57J0j6FC98Eww=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CHd67FagIep2datxOtXol3LLYZ/LJJPJq5dPtNGTDseVr3kV04mshwbcL/NkXQcc+QMFcNVQzSSNa3WMyazSYBGXs2KXqmq4eRXOTglHu8Tkc4DyT4RraOTP4jtaOS4XVA9pDNYRqz9k825m3hCcdNkCJfzqGMpcQWx1i5Tc1nc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hiXQ1ybr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hiXQ1ybr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49389C2BCFC; Mon, 11 May 2026 16:33:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778517198; bh=M5ApfsSYjafUfJ9qgwq5XnAC9wVA2+57J0j6FC98Eww=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hiXQ1ybrKjokkKJjCSwm36wQtUMAEH2YBFMm7TL9Yr5/Vq8P+7qKZvDqLrn3yQwsy eK6GiWeSaPif1iphBUI/XT8nW49DvFlZlOHZ3jaCPjuFmhZUMwDJQwuKxdoZ/w3qRw 2iG8Y3KRiT+6rN/pQpFECf3/+Hwmv/5tM+bU4kExEp5eVhWHwQmVbGRHBvJVicNrv7 zOrtZpPGUyEoX4cxaPi3CESQYcQR6x7bRQRxMIB3IJGHWlFCEv9b9tlDbyUFR6EsMI 45AOKO/DIjo4/mOt2aBmhrE4ebGFyvmqdlVNMLj/Jv/vH5fI75+X15mNDS2fcFKN9w xpesQcidZaW4A== From: Mike Rapoport To: Andrew Morton , David Hildenbrand Cc: Baolin Wang , Barry Song , Dev Jain , Donet Tom , Jason Gunthorpe , John Hubbard , "Liam R. Howlett" , Lance Yang , Li Wang , Leon Romanovsky , Lorenzo Stoakes , Luiz Capitulino , Mark Brown , Michal Hocko , Mike Rapoport , Nico Pache , Peter Xu , Ryan Roberts , Sarthak Sharma , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Zi Yan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v4 41/55] selftests/mm: hugetlb-mremap: add setup of HugeTLB pages Date: Mon, 11 May 2026 19:28:25 +0300 Message-ID: <20260511162840.375890-42-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260511162840.375890-1-rppt@kernel.org> References: <20260511162840.375890-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" hugetlb-mremap test fails if there are no free huge pages prepared by a wrapper script. Add setup of HugeTLB pages to the test and make sure that the original settings are restored on the test exit. Tested-by: Luiz Capitulino Tested-by: Sarthak Sharma Signed-off-by: Mike Rapoport (Microsoft) --- tools/testing/selftests/mm/hugetlb-mremap.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/hugetlb-mremap.c b/tools/testing/selftests/mm/hugetlb-mremap.c index 1c87c39780c5..d239905790dd 100644 --- a/tools/testing/selftests/mm/hugetlb-mremap.c +++ b/tools/testing/selftests/mm/hugetlb-mremap.c @@ -26,6 +26,7 @@ #include #include "kselftest.h" #include "vm_util.h" +#include "hugepage_settings.h" #define DEFAULT_LENGTH_MB 10UL #define MB_TO_BYTES(x) (x * 1024 * 1024) @@ -108,8 +109,9 @@ static void register_region_with_uffd(char *addr, size_t len) int main(int argc, char *argv[]) { + unsigned long hugepage_size; + int ret = 0, fd, nr; size_t length = 0; - int ret = 0, fd; ksft_print_header(); ksft_set_plan(1); @@ -125,7 +127,16 @@ int main(int argc, char *argv[]) else length = DEFAULT_LENGTH_MB; + hugepage_size = default_huge_page_size(); + if (!hugepage_size) + ksft_exit_skip("Could not detect default hugetlb page size\n"); length = MB_TO_BYTES(length); + length = (length + hugepage_size - 1) & ~(hugepage_size - 1); + nr = length / hugepage_size; + + if (!hugetlb_setup_default(nr)) + ksft_exit_skip("Not enough huge pages\n"); + fd = memfd_create(argv[0], MFD_HUGETLB); if (fd < 0) ksft_exit_fail_msg("Open failed: %s\n", strerror(errno)); -- 2.53.0