arch_timer_edge_cases tries to migrate itself across host cpus. Before the first test it migrates to cpu 0 by setting up an affinity mask with only bit 0 set. After that it looks for the next possible cpu in the current affinity mask which still has only bit 0 set. So there is no migration at all.
Fix this by reading the default mask at start and use this to find the next cpu in each iteration.
Signed-off-by: Sebastian Ott sebott@redhat.com --- tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c b/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c index c4716e0c1438..a813b4c6c817 100644 --- a/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c +++ b/tools/testing/selftests/kvm/arm64/arch_timer_edge_cases.c @@ -849,17 +849,17 @@ static void guest_code(enum arch_timer timer) GUEST_DONE(); }
+static cpu_set_t default_cpuset; + static uint32_t next_pcpu(void) { uint32_t max = get_nprocs(); uint32_t cur = sched_getcpu(); uint32_t next = cur; - cpu_set_t cpuset; + cpu_set_t cpuset = default_cpuset;
TEST_ASSERT(max > 1, "Need at least two physical cpus");
- sched_getaffinity(0, sizeof(cpuset), &cpuset); - do { next = (next + 1) % CPU_SETSIZE; } while (!CPU_ISSET(next, &cpuset)); @@ -1046,6 +1046,8 @@ int main(int argc, char *argv[]) if (!parse_args(argc, argv)) exit(KSFT_SKIP);
+ sched_getaffinity(0, sizeof(default_cpuset), &default_cpuset); + if (test_args.test_virtual) { test_vm_create(&vm, &vcpu, VIRTUAL); test_run(vm, vcpu);