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[PULL,15/23] virtio-pci: Report an error when msix vectors init fails

Message ID 1403538745-18622-16-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin June 23, 2014, 3:53 p.m. UTC 
From: Fam Zheng <famz@redhat.com>

Currently vectors silently cleared to 0 if the initialization is failed,
but user should at least have one way to notice this.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/virtio/virtio-pci.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index ce97514..57e1e61 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -976,6 +976,8 @@  static void virtio_pci_device_plugged(DeviceState *d)
 
     if (proxy->nvectors &&
         msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) {
+        error_report("unable to init msix vectors to %" PRIu32,
+                     proxy->nvectors);
         proxy->nvectors = 0;
     }