[merged mm-hotfixes-stable] selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch removed from -mm tree

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The quilt patch titled
     Subject: selftests: memfd_secret: don't build memfd_secret test on unsupported arches
has been removed from the -mm tree.  Its filename was
     selftests-memfd_secret-dont-build-memfd_secret-test-on-unsupported-arches.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
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:

memfd_secret.c: In function 'memfd_secret':
memfd_secret.c:42:24: error: '__NR_memfd_secret' undeclared (first use in this function);
did you mean 'memfd_secret'?
   42 |         return syscall(__NR_memfd_secret, flags);
      |                        ^~~~~~~~~~~~~~~~~
      |                        memfd_secret

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://lkml.kernel.org/r/20240812061522.1933054-1-usama.anjum@xxxxxxxxxxxxx
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>
Reviewed-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Acked-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
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: <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





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