linux-kernel - [PATCH] KVM: selftests: memslot_perf

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Message-Id: <20241004220153.287459-1-mlevitsk@redhat.com>
Date: Fri,  4 Oct 2024 18:01:53 -0400
From: Maxim Levitsky <mlevitsk@...hat.com>
To: kvm@...r.kernel.org
Cc: Paolo Bonzini <pbonzini@...hat.com>,
	linux-kselftest@...r.kernel.org,
	Shuah Khan <shuah@...nel.org>,
	linux-kernel@...r.kernel.org,
	Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH] 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@...hat.com>
---
 tools/testing/selftests/kvm/memslot_perf_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
index 893366982f77b..e9189cbed4bb6 100644
--- a/tools/testing/selftests/kvm/memslot_perf_test.c
+++ b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -415,7 +415,7 @@ 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))
-- 
2.26.3