From 2f489e2e69463729eefc77da22c163ae63b48b74 Mon Sep 17 00:00:00 2001 From: Chaitanya S Prakash <chaitanyas.prakash@arm.com> Date: Thu, 23 Mar 2023 16:22:42 +0530 Subject: [PATCH] selftests/mm: configure nr_hugepages for arm64 Arm64 has a default hugepage size of 512MB when CONFIG_ARM64_64K_PAGES=y is enabled. While testing on arm64 platforms having up to 4PB of virtual address space, a minimum of 6 hugepages were required for all test cases to pass. Support for this requirement has been added. Link: https://lkml.kernel.org/r/20230323105243.2807166-5-chaitanyas.prakash@arm.com Signed-off-by: Chaitanya S Prakash <chaitanyas.prakash@arm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- tools/testing/selftests/mm/run_vmtests.sh | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 83b59ae2d6f08..83c438a18aa77 100644 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -236,8 +236,16 @@ if [ $VADDR64 -ne 0 ]; then CATEGORY="hugevm" run_test ./virtual_address_range echo $prev_policy > /proc/sys/vm/overcommit_memory - # virtual address 128TB switch test + # va high address boundary switch test + ARCH_ARM64="arm64" + prev_nr_hugepages=$(cat /proc/sys/vm/nr_hugepages) + if [ "$ARCH" == "$ARCH_ARM64" ]; then + echo 6 > /proc/sys/vm/nr_hugepages + fi CATEGORY="hugevm" run_test ./va_high_addr_switch.sh + if [ "$ARCH" == "$ARCH_ARM64" ]; then + echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages + fi fi # VADDR64 # vmalloc stability smoke test -- GitLab