KVM: selftests: memslot_perf_test: increase guest sync timeout

Maxim Levitsky · Maxim Levitsky · commit ce95c1635263 · 2024-11-13T19:25:49.000-05:00
JIRA: https://issues.redhat.com/browse/RHEL-66118 commit 2d0f2a6 Author: Maxim Levitsky <mlevitsk@redhat.com> Date: Fri Oct 4 18:01:53 2024 -0400 KVM: selftests: memslot_perf_test: increase guest sync timeout When memslot_perf_test is run nested, first iteration of test_memslot_rw_loop testcase, sometimes takes more than 2 seconds due to build of shadow page tables. Following iterations are fast. To be on the safe side, bump the timeout to 10 seconds. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Tested-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Link: https://lore.kernel.org/r/20241004220153.287459-1-mlevitsk@redhat.com Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -414,7 +414,7 @@ static bool _guest_should_exit(void)
  */
 static noinline void host_perform_sync(struct sync_area *sync)
 {
-	alarm(2);
+	alarm(10);
 
 	atomic_store_explicit(&sync->sync_flag, true, memory_order_release);
 	while (atomic_load_explicit(&sync->sync_flag, memory_order_acquire))

Original file line number	Diff line number	Diff line change
`@@ -414,7 +414,7 @@ static bool _guest_should_exit(void)`
`414`	`414`	`*/`
`415`	`415`	`static noinline void host_perform_sync(struct sync_area *sync)`
`416`	`416`	`{`
`417`		`- alarm(2);`
	`417`	`+ alarm(10);`
`418`	`418`
`419`	`419`	`atomic_store_explicit(&sync->sync_flag, true, memory_order_release);`
`420`	`420`	`while (atomic_load_explicit(&sync->sync_flag, memory_order_acquire))`