[libvirt] [PATCH 4/8] Reset PCI host devices after hot-unplug

When we hot-unplug a PCI host device from a guest, we should reset it. Both managed and unmanaged devices should be reset, but only managed devices should be re-attached. * src/qemu_driver.c: reset devices in qemudDomainDetachHostPciDevice() --- src/qemu_driver.c | 22 +++++++++++++--------- 1 files changed, 13 insertions(+), 9 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 06bbf2a..187497f 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -5780,6 +5780,7 @@ static int qemudDomainDetachHostPciDevice(virConnectPtr conn, virDomainHostdevDefPtr detach; char *cmd, *reply; int i, ret; + pciDevice *pci; for (i = 0 ; i < vm->def->nhostdevs ; i++) { unsigned domain = vm->def->hostdevs[i]->source.subsys.u.pci.domain; @@ -5848,16 +5849,19 @@ static int qemudDomainDetachHostPciDevice(virConnectPtr conn, ret = 0; - if (detach->managed) { - pciDevice *pci = pciGetDevice(conn, - detach->source.subsys.u.pci.domain, - detach->source.subsys.u.pci.bus, - detach->source.subsys.u.pci.slot, - detach->source.subsys.u.pci.function); - if (!pci || pciReAttachDevice(conn, pci) < 0) + pci = pciGetDevice(conn, + detach->source.subsys.u.pci.domain, + detach->source.subsys.u.pci.bus, + detach->source.subsys.u.pci.slot, + detach->source.subsys.u.pci.function); + if (!pci) + ret = -1; + else { + if (pciResetDevice(conn, pci) < 0) + ret = -1; + if (detach->managed && pciReAttachDevice(conn, pci) < 0) ret = -1; - if (pci) - pciFreeDevice(conn, pci); + pciFreeDevice(conn, pci); } if (i != --vm->def->nhostdevs) -- 1.6.2.5