[COMMIT master] pci-assign: Catch missing KVM support

[Avi Kivity <avi@xxxxxxxxxx>]

From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>

Report an error instead of raising a SEGV when a pci-assign device is
about to be initialized without KVM enabled.

Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index bde231d..5f5bde1 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1440,6 +1440,11 @@ static int assigned_initfn(struct PCIDevice *pci_dev)
     uint8_t e_device, e_intx;
     int r;
 
+    if (!kvm_enabled()) {
+        error_report("pci-assign: error: requires KVM support");
+        return -1;
+    }
+
     if (!dev->host.seg && !dev->host.bus && !dev->host.dev && !dev->host.func) {
         error_report("pci-assign: error: no host device specified");
         return -1;
--
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