[Qemu-devel] [PATCH 2/2] qemu kvm: add better error reporting when kvm_get_irq_route_gsi() fails

[Jason Baron <jbaron@redhat.com>]

When kvm_get_irq_route_gsi() fails in assigned_dev_update_msix_mmio, it
would be nice to have a better error message.

Signed-off-by: Jason Baron <jbaron@redhat.com>
---
 hw/device-assignment.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index 89823f1..d017537 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1023,8 +1023,10 @@ static int assigned_dev_update_msix_mmio(PCIDevice *pci_dev)
         }
 
         r = kvm_get_irq_route_gsi();
-        if (r < 0)
+        if (r < 0) {
+            perror("assigned_dev_update_msix_mmio: kvm_get_irq_route_gsi");
             return r;
+        }
 
         adev->entry[i].gsi = r;
         adev->entry[i].type = KVM_IRQ_ROUTING_MSI;
-- 
1.7.1