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| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2022-04-28 23:16:11 -0700 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-04-28 23:16:11 -0700 |
| commit | 9f3265db6ae87de27a5e382410b8eb9af53b161e (patch) | |
| tree | bdd1c2018c2e3a511cdb89c52a6ab749351e7197 /tools/testing/selftests/vm/config | |
| parent | 642bc52aed9c99e8c9c9cfb6781f77719717a36c (diff) | |
| download | linux-9f3265db6ae87de27a5e382410b8eb9af53b161e.tar.gz | |
selftests: vm: add test for Soft-Dirty PTE bit
This introduces three tests:
1) Sanity check soft dirty basic semantics: allocate area, clean,
dirty, check if the SD bit is flipped.
2) Check VMA reuse: validate the VM_SOFTDIRTY usage
3) Check soft-dirty on huge pages
This was motivated by Will Deacon's fix commit 912efa17e512 ("mm: proc:
Invalidate TLB after clearing soft-dirty page state"). I was tracking the
same issue that he fixed, and this test would have caught it.
Link: https://lkml.kernel.org/r/20220420084036.4101604-2-usama.anjum@collabora.com
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Co-developed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Will Deacon <will@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/config')
| -rw-r--r-- | tools/testing/selftests/vm/config | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/config b/tools/testing/selftests/vm/config index 60e82da0de85..be087c4bc396 100644 --- a/tools/testing/selftests/vm/config +++ b/tools/testing/selftests/vm/config @@ -4,3 +4,5 @@ CONFIG_TEST_VMALLOC=m CONFIG_DEVICE_PRIVATE=y CONFIG_TEST_HMM=m CONFIG_GUP_TEST=y +CONFIG_TRANSPARENT_HUGEPAGE=y +CONFIG_MEM_SOFT_DIRTY=y |