linux-kernel - Re: [PATCH] selftests: memfd_secret: don't build memfd

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Message-ID: <Zrjn2qIcGxPBuSP9@kernel.org>
Date: Sun, 11 Aug 2024 19:33:30 +0300
From: Mike Rapoport <rppt@...nel.org>
To: Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Shuah Khan <shuah@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	kernel@...labora.com, stable@...r.kernel.org, linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: Re: [PATCH] selftests: memfd_secret: don't build memfd_secret test
 on unsupported arches

On Fri, Aug 09, 2024 at 12:56:42PM +0500, Muhammad Usama Anjum wrote:
> [1] mentions that memfd_secret is only supported on arm64, riscv, x86
> and x86_64 for now. It doesn't support other architectures. I found the
> build error on arm and decided to send the fix as it was creating noise
> on KernelCI. Hence I'm adding condition that memfd_secret should only be
> compiled on supported architectures.
> 
> Also check in run_vmtests script if memfd_secret binary is present
> before executing it.
> 
> [1] https://lore.kernel.org/all/20210518072034.31572-7-rppt@kernel.org/
> Cc: stable@...r.kernel.org
> Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)")
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>

Acked-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

> ---
>  tools/testing/selftests/mm/Makefile       | 2 ++
>  tools/testing/selftests/mm/run_vmtests.sh | 3 +++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile
> index 1a83b70e84535..4ea188be0588a 100644
> --- a/tools/testing/selftests/mm/Makefile
> +++ b/tools/testing/selftests/mm/Makefile
> @@ -53,7 +53,9 @@ TEST_GEN_FILES += madv_populate
>  TEST_GEN_FILES += map_fixed_noreplace
>  TEST_GEN_FILES += map_hugetlb
>  TEST_GEN_FILES += map_populate
> +ifneq (,$(filter $(ARCH),arm64 riscv riscv64 x86 x86_64))
>  TEST_GEN_FILES += memfd_secret
> +endif
>  TEST_GEN_FILES += migration
>  TEST_GEN_FILES += mkdirty
>  TEST_GEN_FILES += mlock-random-test
> diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh
> index 03ac4f2e1cce6..36045edb10dea 100755
> --- a/tools/testing/selftests/mm/run_vmtests.sh
> +++ b/tools/testing/selftests/mm/run_vmtests.sh
> @@ -374,8 +374,11 @@ CATEGORY="hmm" run_test bash ./test_hmm.sh smoke
>  # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests
>  CATEGORY="madv_populate" run_test ./madv_populate
>  
> +if [ -x ./memfd_secret ]
> +then
>  (echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix
>  CATEGORY="memfd_secret" run_test ./memfd_secret
> +fi
>  
>  # KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100
>  CATEGORY="ksm" run_test ./ksm_tests -H -s 100
> -- 
> 2.39.2
> 

-- 
Sincerely yours,
Mike.