[RFC PATCH] virtio: Only display errors if GUEST_ERROR is enabled

[Philippe Mathieu-Daudé]

Do not display virtio guest errors until the user request it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/virtio/virtio.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index eff35fab7ce..bde0d31c5d9 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -3622,9 +3622,11 @@ void GCC_FMT_ATTR(2, 3) virtio_error(VirtIODevice *vdev, 
const char *fmt, ...)
 {
     va_list ap;
 
-    va_start(ap, fmt);
-    error_vreport(fmt, ap);
-    va_end(ap);
+    if (qemu_loglevel_mask(LOG_GUEST_ERROR)) {
+        va_start(ap, fmt);
+        error_vreport(fmt, ap);
+        va_end(ap);
+    }
 
     if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
         vdev->status = vdev->status | VIRTIO_CONFIG_S_NEEDS_RESET;
-- 
2.26.2