Re: [libvirt] [PATCH V4 5/6] libxl: fix hot add/remove VF from a pool

For those VF allocated from a network pool, we need to set its backend to be VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN so that later work can be correct. Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/libxl/libxl_driver.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index 328dac8..d7004fd 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -3145,13 +3145,23 @@ libxlDomainAttachNetDevice(libxlDriverPrivatePtr driver, } if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) { + virDomainHostdevDefPtr hostdev = virDomainNetGetActualHostdev(net); + virDomainHostdevSubsysPCIPtr pcisrc = &hostdev->source.subsys.u.pci; + + /* For those just allocated from a network pool whose backend is + * still VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT, we need to set + * backend correctly. + */ + if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && + hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) + pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN; + /* This is really a "smart hostdev", so it should be attached * as a hostdev (the hostdev code will reach over into the * netdev-specific code as appropriate), then also added to * the nets list (see out:) if successful. */ - ret = libxlDomainAttachHostDevice(driver, vm, - virDomainNetGetActualHostdev(net)); + ret = libxlDomainAttachHostDevice(driver, vm, hostdev);