KVM: selftests: Use ARRAY_SIZE for array length

Use of macro ARRAY_SIZE to calculate array size minimizes
the redundant code and improves code reusability.

./tools/testing/selftests/kvm/x86_64/debug_regs.c:169:32-33: WARNING: Use ARRAY_SIZE.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=10847
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240913054315.130832-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/tools/testing/selftests/kvm/x86_64/debug_regs.c b/tools/testing/selftests/kvm/x86_64/debug_regs.c
index 76cc2df9238a397f6527b18da0387fbc5831cd00..2d814c1d1dc4424ab528af53d14d5d33b7b42734 100644 (file)
--- a/tools/testing/selftests/kvm/x86_64/debug_regs.c
+++ b/tools/testing/selftests/kvm/x86_64/debug_regs.c
@@ -166,7 +166,7 @@ int main(void)
        /* Test single step */
        target_rip = CAST_TO_RIP(ss_start);
        target_dr6 = 0xffff4ff0ULL;
-       for (i = 0; i < (sizeof(ss_size) / sizeof(ss_size[0])); i++) {
+       for (i = 0; i < ARRAY_SIZE(ss_size); i++) {
                target_rip += ss_size[i];
                memset(&debug, 0, sizeof(debug));
                debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |