[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC PATCH 1/2] libqtest: add qtest_accel() to avoid warnin
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [RFC PATCH 1/2] libqtest: add qtest_accel() to avoid warnings when kvm is not available |
Date: |
Tue, 15 Aug 2017 13:39:58 -0300 |
only warn once about it.
- kernel without kvm:
# make check-qtest-x86_64
GTESTER check-qtest-x86_64
Could not access KVM kernel module: No such device
qemu-system-x86_64: failed to initialize KVM: No such device
qemu-system-x86_64: Back to tcg accelerator
- tests ran as user:
$ make check-qtest-x86_64
GTESTER check-qtest-x86_64
Could not access KVM kernel module: Permission denied
qemu-system-x86_64: failed to initialize KVM: Permission denied
qemu-system-x86_64: Back to tcg accelerator
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
tests/libqtest.h | 8 ++++++++
tests/libqtest.c | 18 ++++++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/tests/libqtest.h b/tests/libqtest.h
index 38bc1e9953..24e03148eb 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -927,4 +927,12 @@ QDict *qmp_fd(int fd, const char *fmt, ...);
*/
void qtest_cb_for_every_machine(void (*cb)(const char *machine));
+/**
+ * qtest_accel:
+ * @accel: List of accelerators
+ *
+ * Filter accelerators accessible on the host.
+ */
+const char *qtest_accel(const char *accel);
+
#endif
diff --git a/tests/libqtest.c b/tests/libqtest.c
index b9a1f180e1..d2dfca35a3 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -987,3 +987,21 @@ void qtest_cb_for_every_machine(void (*cb)(const char
*machine))
qtest_end();
QDECREF(response);
}
+
+const char *qtest_accel(const char *accel)
+{
+ static bool kvm_accessible = true;
+
+ if (strlen(accel) <= 4 || strncmp(accel, "kvm:", 4)) {
+ return accel; /* no match */
+ }
+
+ if (!kvm_accessible || !access("/dev/kvm", W_OK)) {
+ accel += 4; /* skip "kvm:" */
+ if (kvm_accessible) {
+ kvm_accessible = false; /* warn once */
+ g_printerr("kvm not accessible, using %s\n", accel);
+ }
+ }
+ return accel;
+}
--
2.14.1
[Qemu-devel] [PATCH 2/2] tests: use qtest_accel(), Philippe Mathieu-Daudé, 2017/08/15