test_ivshmem_server() waits until the first byte in BAR 2 contains the
0x42 we put into shared memory. Works because the byte reads zero
until the device maps the shared memory gotten from the server.
Check the IVPosition register instead: it's initially -1, and becomes
non-negative right when the device maps the share memory, so no
change, just cleaner, because it's what guest software is supposed to
do.
Signed-off-by: Markus Armbruster <arm...@redhat.com>
---
tests/ivshmem-test.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
index ba4d9f1..f40c3497 100644
--- a/tests/ivshmem-test.c
+++ b/tests/ivshmem-test.c
@@ -301,7 +301,6 @@ static void test_ivshmem_server(bool msi)
int nvectors = 2;
guint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
- memset(tmpshmem, 0x42, TMPSHMSIZE);
ret = ivshmem_server_init(&server, tmpserver, tmpshm,
TMPSHMSIZE, nvectors,
g_test_verbose());
@@ -315,9 +314,9 @@ static void test_ivshmem_server(bool msi)
setup_vm_with_server(&state2, nvectors, msi);
s2 = &state2;
+ /* check state before server sends stuff */
g_assert_cmpuint(in_reg(s1, IVPOSITION), ==, 0xffffffff);
g_assert_cmpuint(in_reg(s2, IVPOSITION), ==, 0xffffffff);
-
g_assert_cmpuint(qtest_readb(s1->qtest, (uintptr_t)s1->mem_base), ==,
0x00);
thread.server = &server;
@@ -326,12 +325,11 @@ static void test_ivshmem_server(bool msi)
thread.thread = g_thread_new("ivshmem-server", server_thread, &thread);
g_assert(thread.thread != NULL);
- /* waiting until mapping is done */
+ /* waiting for devices to become operational */
while (g_get_monotonic_time() < end_time) {
g_usleep(1000);
-
- if (qtest_readb(s1->qtest, (uintptr_t)s1->mem_base) == 0x42 &&
- qtest_readb(s2->qtest, (uintptr_t)s2->mem_base) == 0x42) {
+ if ((int)in_reg(s1, IVPOSITION) >= 0 &&
+ (int)in_reg(s2, IVPOSITION) >= 0) {
break;
}
}
--
2.4.3
