+ selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch added to mm-hotfixes-unstable branch

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The patch titled
     Subject: selftests: memfd_secret: don't build memfd_secret test on unsupported arches
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Subject: selftests: memfd_secret: don't build memfd_secret test on unsupported arches
Date: Fri, 9 Aug 2024 12:56:42 +0500

[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.

Link: https://lore.kernel.org/all/20210518072034.31572-7-rppt@xxxxxxxxxx/ [1]
Link: https://lkml.kernel.org/r/20240809075642.403247-1-usama.anjum@xxxxxxxxxxxxx
Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 tools/testing/selftests/mm/Makefile       |    2 ++
 tools/testing/selftests/mm/run_vmtests.sh |    3 +++
 2 files changed, 5 insertions(+)

--- a/tools/testing/selftests/mm/Makefile~selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches
+++ a/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
--- a/tools/testing/selftests/mm/run_vmtests.sh~selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches
+++ a/tools/testing/selftests/mm/run_vmtests.sh
@@ -374,8 +374,11 @@ CATEGORY="hmm" run_test bash ./test_hmm.
 # 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
_

Patches currently in -mm which might be from usama.anjum@xxxxxxxxxxxxx are

selftests-mm-fix-build-errors-on-armhf.patch
selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch





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