Patch series "Fix va_high_addr_switch.sh test failure - again", v2.

The series address several issues exist for the va_high_addr_switch test: 1) the test return value is ignored in va_high_addr_switch.sh. 2) the va_high_addr_switch test requires 6 hugepages not 5. 3) the reurn value of the first test in va_high_addr_switch.c can be overridden by the second test. 4) the nr_hugepages setup in run_vmtests.sh for arm64 can be done in va_high_addr_switch.sh too. 5) update a comment for check_test_requirements.

Changes in v2: - shorten the comment in for hugepages setup in v1 - add a new patch to fix the return value overridden issue in va_high_addr_switch.c - fix a code comment for check_test_requirements. - update the series summary in patch 1 - add reviewed-by from Luiz Capitulino on patch 1 and patch 3

This patch: (of 5)

The return value should be return value of va_high_addr_switch, otherwise a test failure would be silently ignored.

Reviewed-by: Luiz Capitulino luizcap@redhat.com Fixes: d9d957bd7b61 ("selftests/mm: alloc hugepages in va_high_addr_switch test") CC: Luiz Capitulino luizcap@redhat.com Signed-off-by: Chunyu Hu chuhu@redhat.com --- Chunyu Hu (5): selftests/mm: fix va_high_addr_switch.sh return value selftests/mm: allocate 6 hugepages in va_high_addr_switch.sh selftests/mm: remove arm64 nr_hugepages setup for va_high_addr_switch test selftests/mm: va_high_addr_switch return fail when either test failed selftests/mm: fix comment for check_test_requirements

tools/testing/selftests/mm/run_vmtests.sh | 8 -------- tools/testing/selftests/mm/va_high_addr_switch.c | 10 +++++++--- tools/testing/selftests/mm/va_high_addr_switch.sh | 12 +++++++----- 3 files changed, 14 insertions(+), 16 deletions(-)

According to the doc below, I don't add the cover letter, not sure if cover letter is preferred, and if that's the case, the doc need an update. https://www.ozlabs.org/~akpm/stuff/tpp.txt --- tools/testing/selftests/mm/va_high_addr_switch.sh | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/mm/va_high_addr_switch.sh b/tools/testing/selftests/mm/va_high_addr_switch.sh index a7d4b02b21dd..f89fe078a8e6 100755 --- a/tools/testing/selftests/mm/va_high_addr_switch.sh +++ b/tools/testing/selftests/mm/va_high_addr_switch.sh @@ -114,4 +114,6 @@ save_nr_hugepages # 4 keep_mapped pages, and one for tmp usage setup_nr_hugepages 5 ./va_high_addr_switch --run-hugetlb +retcode=$? restore_nr_hugepages +exit $retcode