[merged mm-stable] selftests-mm-allocate-6-hugepages-in-va_high_addr_switchsh.patch removed from -mm tree

[merged mm-stable] selftests-mm-allocate-6-hugepages-in-va_high_addr_switchsh.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: selftests/mm: allocate 6 hugepages in va_high_addr_switch.sh
has been removed from the -mm tree.  Its filename was
     selftests-mm-allocate-6-hugepages-in-va_high_addr_switchsh.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Chunyu Hu <chuhu@redhat.com>
Subject: selftests/mm: allocate 6 hugepages in va_high_addr_switch.sh
Date: Sun, 21 Dec 2025 12:00:22 +0800

The va_high_addr_switch test requires 6 hugepages, not 5. If running the
test directly by: ./va_high_addr_switch.sh, the test will hit a mmap 'FAIL'
caused by not enough hugepages:

  mmap(addr_switch_hint - hugepagesize, 2*hugepagesize, MAP_HUGETLB): 0x7f330f800000 - OK
  mmap(addr_switch_hint , 2*hugepagesize, MAP_FIXED | MAP_HUGETLB): 0xffffffffffffffff - FAILED

The failure can't be hit if run the tests by running 'run_vmtests.sh -t
hugevm' because the nr_hugepages is set to 128 at the beginning of
run_vmtests.sh and va_high_addr_switch.sh skip the setup of nr_hugepages
because already enough.

Link: https://lkml.kernel.org/r/20251221040025.3159990-2-chuhu@redhat.com
Fixes: d9d957bd7b61 ("selftests/mm: alloc hugepages in va_high_addr_switch test")
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Reviewed-by: Luiz Capitulino <luizcap@redhat.com>
Cc: "David Hildenbrand (Red Hat)" <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/mm/va_high_addr_switch.sh |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/tools/testing/selftests/mm/va_high_addr_switch.sh~selftests-mm-allocate-6-hugepages-in-va_high_addr_switchsh
+++ a/tools/testing/selftests/mm/va_high_addr_switch.sh
@@ -111,8 +111,8 @@ setup_nr_hugepages()
 
 check_test_requirements
 save_nr_hugepages
-# 4 keep_mapped pages, and one for tmp usage
-setup_nr_hugepages 5
+# The HugeTLB tests require 6 pages
+setup_nr_hugepages 6
 ./va_high_addr_switch --run-hugetlb
 retcode=$?
 restore_nr_hugepages
_

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