Sorry, I screwed up when sending it out. It's not [1/2], it's supposed to be a stand-alone patch. IOW, don't expect a [2/2] followup :)
On Fri, Dec 29, 2023 at 6:56 PM Suren Baghdasaryan surenb@google.com wrote:
Add a test for UFFDIO_MOVE ioctl operating on a hugepage which has to be split because destination is marked with MADV_NOHUGEPAGE. With this we cover all 3 cases: normal page move, hugepage move, hugepage splitting before move.
Signed-off-by: Suren Baghdasaryan surenb@google.com
Patch applies over mm-unstable.
tools/testing/selftests/mm/uffd-unit-tests.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c index d8091523c2df..cce90a10515a 100644 --- a/tools/testing/selftests/mm/uffd-unit-tests.c +++ b/tools/testing/selftests/mm/uffd-unit-tests.c @@ -1199,6 +1199,16 @@ static void uffd_move_test(uffd_test_args_t *targs)
static void uffd_move_pmd_test(uffd_test_args_t *targs) {
if (madvise(area_dst, nr_pages * page_size, MADV_HUGEPAGE))err("madvise(MADV_HUGEPAGE) failure");uffd_move_test_common(targs, read_pmd_pagesize(),uffd_move_pmd_handle_fault);+}
+static void uffd_move_pmd_split_test(uffd_test_args_t *targs) +{
if (madvise(area_dst, nr_pages * page_size, MADV_NOHUGEPAGE))err("madvise(MADV_NOHUGEPAGE) failure"); uffd_move_test_common(targs, read_pmd_pagesize(), uffd_move_pmd_handle_fault);} @@ -1330,6 +1340,13 @@ uffd_test_case_t uffd_tests[] = { .uffd_feature_required = UFFD_FEATURE_MOVE, .test_case_ops = &uffd_move_test_pmd_case_ops, },
{.name = "move-pmd-split",.uffd_fn = uffd_move_pmd_split_test,.mem_targets = MEM_ANON,.uffd_feature_required = UFFD_FEATURE_MOVE,.test_case_ops = &uffd_move_test_pmd_case_ops,}, { .name = "wp-fork", .uffd_fn = uffd_wp_fork_test,-- 2.34.1