From ede34470fde19c0f326cdb0dfca39fa86fd9ec16 Mon Sep 17 00:00:00 2001 From: Pavel Fedin Date: Fri, 17 Jul 2015 14:27:47 +0300 Subject: [PATCH] qemu: Allow to plug virtio-net-pci into PCIe slot virtio-net-pci adapter is capable to use irqfd with vhost-net only in MSI-X mode, which appears to be available only on PCIe bus, at least on ARM Signed-off-by: Pavel Fedin --- src/qemu/qemu_command.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 0fe14758ca..eb00f0f61e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1662,6 +1662,14 @@ qemuCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED, */ flags = VIR_PCI_CONNECT_TYPE_PCI | VIR_PCI_CONNECT_TYPE_PCIE; break; + + case VIR_DOMAIN_DEVICE_NET: + if (STREQ(device->data.net->model, "virtio")) { + /* virtio-net-pci adapter in qemu has to be plugged into PCIe slot + * in order to be able to use irqfds with vhost-net + */ + flags = VIR_PCI_CONNECT_TYPE_PCI | VIR_PCI_CONNECT_TYPE_PCIE; + } } /* Ignore implicit controllers on slot 0:0:1.0: -- GitLab