[PATCH v2 44/53] selftests/mm: pagemap_ioctl: add setup of HugeTLB pages

Mike Rapoport
2026-04-18T11:00:20Z

pagemap-ioctl skips HugeTLB tests if there are no free huge pages
prepared by a wrapper script.

Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
tools/testing/selftests/mm/pagemap_ioctl.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c
index 7f9428d6062c..e2c62cb6978f 100644
--- a/tools/testing/selftests/mm/pagemap_ioctl.c
+++ b/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -7,8 +7,6 @@
#include <sys/mman.h>
#include <errno.h>
#include <malloc.h>
-#include "vm_util.h"
-#include "kselftest.h"
#include <linux/types.h>
#include <linux/memfd.h>
#include <linux/userfaultfd.h>
@@ -23,6 +21,10 @@
#include <sys/ipc.h>
#include <sys/shm.h>

+#include "vm_util.h"
+#include "kselftest.h"
+#include "hugepage_settings.h"
+
#define PAGEMAP_BITS_ALL (PAGE_IS_WPALLOWED | PAGE_IS_WRITTEN | \
PAGE_IS_FILE | PAGE_IS_PRESENT | \
PAGE_IS_SWAPPED | PAGE_IS_PFNZERO | \
@@ -1554,6 +1556,9 @@ int main(int __attribute__((unused)) argc, char *argv[])
if (init_uffd())
ksft_exit_skip("Failed to initialize userfaultfd\n");

+ if (!hugetlb_setup_default(4))
+ ksft_exit_skip("Not enough huge pages\n");
+
ksft_set_plan(117);

page_size = getpagesize();
@@ -1605,7 +1610,7 @@ int main(int __attribute__((unused)) argc, char *argv[])
}

/* 5. SHM Hugetlb page testing */
- mem_size = 2*1024*1024;
+ mem_size = default_huge_page_size();
mem = gethugetlb_mem(mem_size, &shmid);
if (mem) {
wp_init(mem, mem_size);
@@ -1633,7 +1638,7 @@ int main(int __attribute__((unused)) argc, char *argv[])
}

/* 7. File Hugetlb testing */
- mem_size = 2*1024*1024;
+ mem_size = default_huge_page_size();
fd = memfd_create("uffd-test", MFD_HUGETLB | MFD_NOEXEC_SEAL);
if (fd < 0)
ksft_exit_fail_msg("uffd-test creation failed %d %s\n", errno, strerror(errno));
--
2.53.0