[PULL 7/7] tests/qtest/migration-test: Run the dirty ring tests only with the x86 target

[Thomas Huth <thuth@redhat.com>]

kvm_dirty_ring_supported() only checks whether the dirty ring support
is available on the x86 host, but it ignores whether the target QEMU
architecture is x86 or not. Thus the test_vcpu_dirty_limit() test
currently fails with the assert((strcmp(arch, "x86_64") == 0)) statement
in dirtylimit_start_vm() if the users run e.g. "make check-qtest-aarch64"
on their x86 host. Fix it by only executing the tests when we're running
with a x86_64 target QEMU binary with KVM.

Message-Id: <20220801114644.208197-1-thuth@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qtest/migration-test.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index 10ab7a708c..520a5f917c 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -2425,6 +2425,7 @@ int main(int argc, char **argv)
     char template[] = "/tmp/migration-test-XXXXXX";
     const bool has_kvm = qtest_has_accel("kvm");
     const bool has_uffd = ufd_version_check();
+    const char *arch = qtest_get_arch();
     int ret;
 
     g_test_init(&argc, &argv, NULL);
@@ -2434,7 +2435,7 @@ int main(int argc, char **argv)
      * is touchy due to race conditions on dirty bits (especially on PPC for
      * some reason)
      */
-    if (g_str_equal(qtest_get_arch(), "ppc64") &&
+    if (g_str_equal(arch, "ppc64") &&
         (!has_kvm || access("/sys/module/kvm_hv", F_OK))) {
         g_test_message("Skipping test: kvm_hv not available");
         return g_test_run();
@@ -2444,7 +2445,7 @@ int main(int argc, char **argv)
      * Similar to ppc64, s390x seems to be touchy with TCG, so disable it
      * there until the problems are resolved
      */
-    if (g_str_equal(qtest_get_arch(), "s390x") && !has_kvm) {
+    if (g_str_equal(arch, "s390x") && !has_kvm) {
         g_test_message("Skipping test: s390x host with KVM is required");
         return g_test_run();
     }
@@ -2559,7 +2560,7 @@ int main(int argc, char **argv)
 #endif /* CONFIG_TASN1 */
 #endif /* CONFIG_GNUTLS */
 
-    if (kvm_dirty_ring_supported()) {
+    if (g_str_equal(arch, "x86_64") && has_kvm && kvm_dirty_ring_supported()) {
         qtest_add_func("/migration/dirty_ring",
                        test_precopy_unix_dirty_ring);
         qtest_add_func("/migration/vcpu_dirty_limit",
-- 
2.31.1