+ selftests-mm-use-pm_-macros-in-vm_utilsh.patch added to mm-unstable branch

+ selftests-mm-use-pm_-macros-in-vm_utilsh.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/mm: use PM_* macros in vm_utils.h
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-mm-use-pm_-macros-in-vm_utilsh.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-use-pm_-macros-in-vm_utilsh.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Peter Xu <peterx@redhat.com>
Subject: selftests/mm: use PM_* macros in vm_utils.h
Date: Wed, 12 Apr 2023 12:42:27 -0400

We've got the macros in uffd-stress.c, move it over and use it in
vm_util.h.

Link: https://lkml.kernel.org/r/20230412164227.328145-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/userfaultfd.c |    8 --------
 tools/testing/selftests/mm/vm_util.c     |   16 ++++------------
 tools/testing/selftests/mm/vm_util.h     |    8 ++++++++
 3 files changed, 12 insertions(+), 20 deletions(-)

--- a/tools/testing/selftests/mm/userfaultfd.c~selftests-mm-use-pm_-macros-in-vm_utilsh
+++ a/tools/testing/selftests/mm/userfaultfd.c
@@ -1389,14 +1389,6 @@ static int userfaultfd_minor_test(void)
 	return stats.missing_faults != 0 || stats.minor_faults != nr_pages;
 }
 
-#define BIT_ULL(nr)                   (1ULL << (nr))
-#define PM_SOFT_DIRTY                 BIT_ULL(55)
-#define PM_MMAP_EXCLUSIVE             BIT_ULL(56)
-#define PM_UFFD_WP                    BIT_ULL(57)
-#define PM_FILE                       BIT_ULL(61)
-#define PM_SWAP                       BIT_ULL(62)
-#define PM_PRESENT                    BIT_ULL(63)
-
 static int pagemap_open(void)
 {
 	int fd = open("/proc/self/pagemap", O_RDONLY);
--- a/tools/testing/selftests/mm/vm_util.c~selftests-mm-use-pm_-macros-in-vm_utilsh
+++ a/tools/testing/selftests/mm/vm_util.c
@@ -25,25 +25,17 @@ uint64_t pagemap_get_entry(int fd, char
 
 bool pagemap_is_softdirty(int fd, char *start)
 {
-	uint64_t entry = pagemap_get_entry(fd, start);
-
-	// Check if dirty bit (55th bit) is set
-	return entry & 0x0080000000000000ull;
+	return pagemap_get_entry(fd, start) & PM_SOFT_DIRTY;
 }
 
 bool pagemap_is_swapped(int fd, char *start)
 {
-	uint64_t entry = pagemap_get_entry(fd, start);
-
-	return entry & 0x4000000000000000ull;
+	return pagemap_get_entry(fd, start) & PM_SWAP;
 }
 
 bool pagemap_is_populated(int fd, char *start)
 {
-	uint64_t entry = pagemap_get_entry(fd, start);
-
-	/* Present or swapped. */
-	return entry & 0xc000000000000000ull;
+	return pagemap_get_entry(fd, start) & (PM_PRESENT | PM_SWAP);
 }
 
 unsigned long pagemap_get_pfn(int fd, char *start)
@@ -51,7 +43,7 @@ unsigned long pagemap_get_pfn(int fd, ch
 	uint64_t entry = pagemap_get_entry(fd, start);
 
 	/* If present (63th bit), PFN is at bit 0 -- 54. */
-	if (entry & 0x8000000000000000ull)
+	if (entry & PM_PRESENT)
 		return entry & 0x007fffffffffffffull;
 	return -1ul;
 }
--- a/tools/testing/selftests/mm/vm_util.h~selftests-mm-use-pm_-macros-in-vm_utilsh
+++ a/tools/testing/selftests/mm/vm_util.h
@@ -6,6 +6,14 @@
 #include <string.h> /* ffsl() */
 #include <unistd.h> /* _SC_PAGESIZE */
 
+#define BIT_ULL(nr)                   (1ULL << (nr))
+#define PM_SOFT_DIRTY                 BIT_ULL(55)
+#define PM_MMAP_EXCLUSIVE             BIT_ULL(56)
+#define PM_UFFD_WP                    BIT_ULL(57)
+#define PM_FILE                       BIT_ULL(61)
+#define PM_SWAP                       BIT_ULL(62)
+#define PM_PRESENT                    BIT_ULL(63)
+
 extern unsigned int __page_size;
 extern unsigned int __page_shift;
 
_

Patches currently in -mm which might be from peterx@redhat.com are

mm-khugepaged-check-again-on-anon-uffd-wp-during-isolation.patch
revert-userfaultfd-dont-fail-on-unrecognized-features.patch
selftests-mm-update-gitignore-with-two-missing-tests.patch
selftests-mm-dump-a-summary-in-run_vmtestssh.patch
selftests-mm-merge-utilh-into-vm_utilh.patch
selftests-mm-use-test_gen_progs-where-proper.patch
selftests-mm-link-vm_utilc-always.patch
selftests-mm-merge-default_huge_page_size-into-one.patch
selftests-mm-use-pm_-macros-in-vm_utilsh.patch
selftests-mm-reuse-pagemap_get_entry-in-vm_utilh.patch
selftests-mm-test-uffdio_zeropage-only-when-hugetlb.patch
selftests-mm-drop-test_uffdio_zeropage_eexist.patch
selftests-mm-create-uffd-common.patch
selftests-mm-split-uffd-tests-into-uffd-stress-and-uffd-unit-tests.patch
selftests-mm-uffd_register.patch
selftests-mm-uffd_open_devsys.patch
selftests-mm-uffdio_api-test.patch
selftests-mm-drop-global-mem_fd-in-uffd-tests.patch
selftests-mm-drop-global-hpage_size-in-uffd-tests.patch
selftests-mm-rename-uffd_stats-to-uffd_args.patch
selftests-mm-let-uffd_handle_page_fault-take-wp-parameter.patch
selftests-mm-allow-allocate_area-to-fail-properly.patch
selftests-mm-add-framework-for-uffd-unit-test.patch
selftests-mm-move-uffd-pagemap-test-to-unit-test.patch
selftests-mm-move-uffd-minor-test-to-unit-test.patch
selftests-mm-move-uffd-sig-events-tests-into-uffd-unit-tests.patch
selftests-mm-move-zeropage-test-into-uffd-unit-tests.patch
selftests-mm-workaround-no-way-to-detect-uffd-minor-wp.patch
selftests-mm-allow-uffd-test-to-skip-properly-with-no-privilege.patch
selftests-mm-drop-sys-dev-test-in-uffd-stress-test.patch
selftests-mm-add-shmem-private-test-to-uffd-stress.patch
selftests-mm-add-uffdio-register-ioctls-test.patch