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charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 8C70AA000F X-Rspam-User: X-Stat-Signature: nx58pi1qsouia4jra5p3sgqhydbwdqxg X-HE-Tag: 1790600981-744651 X-HE-Meta: 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 jFAtCvbM JU26FNST3NHRq1pwkZMiC2jovupSF25DX47X7dffVbLQdUcoDcXgaLqN+AbfN9GsjhriH4WOUNhvuyjmoigIBntlVE5HNgzIypcEJEZE7NeX0VKv4PNA13Yi4y80zkGLGUhIje+6vNU0ZhI8d3xJxnpHtUAJryG8h0ubSE9q48GMAvZpBbu35PSSkn17TJ8Xt1xVRQhGuqme3wByUher3X8B8kMaPfG4K9ZqV2LcQ9RicVoSpoODWnQxhh5xJQBJ242DRordiC3Q2PmNVH7fhv5bAHyty+ZUEkMNIwz3iLP8+i8fdoQXuglbzmWTQ+nkwn1U89WhWU4TC5g/t1miFxTeTTIAxI6qaVXZ56vyrv8jCKX0= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: commit a914785f6349da754e1226420bf4e51961956769 upstream. When running the HugeTLB kselftest suite on arm64 with 64K base pages, this test always fails: # ------------------------- # running ./hugepage-mremap # ------------------------- # TAP version 13 # 1..1 # # Map haddr: Returned address is 0x7eaa40000000 # # Map daddr: Returned address is 0x7daa40000000 # # Map vaddr: Returned address is 0x7faa40000000 # Bail out! ioctl-UFFDIO_REGISTER: Invalid argument # # Planned tests != run tests (1 != 0) # # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0 # [FAIL] not ok 1 hugepage-mremap # exit=1 # NOTE: These hugetlb tests provide minimal coverage. Use # https://github.com/libhugetlbfs/libhugetlbfs.git for # hugetlb regression testing. # SKIP ./uffd-wp-mremap The problem is that the default HugeTLB page size on such systems is 512 MiB and 'length' is not aligned to the page size. This causes uffd_register() to fail as 'length' is 10 MiB and not aligned to the HugeTLB page size. On upstream this was fixed by a914785f6349 ("selftests/mm: hugetlb-mremap: add setup of HugeTLB pages") as that commit aligns 'length' to the default HugeTLB page size as part of what it's doing. Since this commit is part of a 50+ patch series, we backport only the 'length' alignment bits to fix the test. Signed-off-by: Luiz Capitulino --- tools/testing/selftests/mm/hugepage-mremap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/mm/hugepage-mremap.c b/tools/testing/selftests/mm/hugepage-mremap.c index 928c1045e295..0d4e1a5b185d 100644 --- a/tools/testing/selftests/mm/hugepage-mremap.c +++ b/tools/testing/selftests/mm/hugepage-mremap.c @@ -97,6 +97,7 @@ static void register_region_with_uffd(char *addr, size_t len) int main(int argc, char *argv[]) { + unsigned long hugepage_size; size_t length = 0; int ret = 0, fd; @@ -114,7 +115,12 @@ int main(int argc, char *argv[]) else length = DEFAULT_LENGTH_MB; + hugepage_size = default_huge_page_size(); + if (!hugepage_size) + ksft_exit_skip("Could not detect default hugetlb page size\n"); + length = MB_TO_BYTES(length); + length = (length + hugepage_size - 1) & ~(hugepage_size - 1); fd = memfd_create(argv[0], MFD_HUGETLB); if (fd < 0) ksft_exit_fail_msg("Open failed: %s\n", strerror(errno)); -- 2.55.0