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| author |   Adam Sindelar <adam@wowsignal.io> | 2022-06-27 18:39:12 +0200 |
|---|---|---|
| committer |   akpm <akpm@linux-foundation.org> | 2022-07-03 18:08:52 -0700 |
| commit | 4f2930c6718afbb6c5904cda6f6781a70c52a042 (patch) | |
| tree | e93f7d6e262c5d66aa2ba243e7431167ab4f54b6 /tools/testing/selftests/vm/Makefile | |
| parent | mm/khugepaged: try to free transhuge swapcache when possible (diff) | |
| download | linux-dev-4f2930c6718afbb6c5904cda6f6781a70c52a042.tar.xz linux-dev-4f2930c6718afbb6c5904cda6f6781a70c52a042.zip | |
selftests/vm: only run 128TBswitch with 5-level paging
The test va_128TBswitch.c expects to be able to pass mmap an address hint
and length that cross the address 1<<47. On x86_64, this is not possible
without 5-level page tables, so the test fails.
The test is already only run on 64-bit powerpc and x86_64 archs, but this
patch adds an additional check on x86_64 that skips the test if
PG_TABLE_LEVELS < 5. There is precedent for checking /proc/config.gz in
selftests, e.g. in selftests/firmware.
Running the tests produces the desired output:
sudo make -C tools/testing/selftests TARGETS=vm run_tests
---------------------------
running ./va_128TBswitch.sh
---------------------------
./va_128TBswitch.sh: PG_TABLE_LEVELS=4, must be >= 5 to run this test
[SKIP]
-------------------------------
[adam@wowsignal.io: restrict the check to x86_64]
Link: https://lkml.kernel.org/r/20220628163654.337600-1-adam@wowsignal.io
[adam@wowsignal.io: fix formatting issues, rename "die" to "fail"]
Link: https://lkml.kernel.org/r/20220701163030.415735-1-adam@wowsignal.io
Link: https://lkml.kernel.org/r/20220627163912.5581-1-adam@wowsignal.io
Signed-off-by: Adam Sindelar <adam@wowsignal.io>
Cc: Adam Sindelar <ats@fb.com>
Cc: David Vernet <void@manifault.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/Makefile')
| -rw-r--r-- | tools/testing/selftests/vm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 44f25acfbeca..6a34209379a4 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -93,6 +93,7 @@ TEST_PROGS := run_vmtests.sh TEST_FILES := test_vmalloc.sh TEST_FILES += test_hmm.sh +TEST_FILES += va_128TBswitch.sh KSFT_KHDR_INSTALL := 1 include ../lib.mk |