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Ensure that PCI device is reattached to host if hotadd fails

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When an attempt to hotplug a PCI device to a guest fails,
the device was left attached to pci-stub. It is neccessary
to reset the device and then attach it to the host driver
again.

* src/qemu/qemu_driver.c: Reattach PCI device to host if
  hotadd fails
This commit is contained in:
Daniel P. Berrange 2010-05-28 12:20:24 +01:00
parent f43dc26af7
commit 1c72695c44
1 changed files with 16 additions and 1 deletions
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17
src/qemu/qemu_driver.c
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@ -7720,6 +7720,7 @@ static int qemudDomainAttachHostPciDevice(struct qemud_driver *driver,
pciFreeDevice(pci);
return -1;
}
pci = NULL; /* activePciHostdevs owns the 'pci' reference now */
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
if (qemuAssignDeviceHostdevAlias(vm->def, hostdev, -1) < 0)
@ -7787,8 +7788,22 @@ error:
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &hostdev->info) < 0)
VIR_WARN0("Unable to release PCI address on host device");
VIR_FREE(devstr);
pci = pciGetDevice(hostdev->source.subsys.u.pci.domain,
hostdev->source.subsys.u.pci.bus,
hostdev->source.subsys.u.pci.slot,
hostdev->source.subsys.u.pci.function);
pciDeviceListDel(driver->activePciHostdevs, pci);
if (pciResetDevice(pci, driver->activePciHostdevs) < 0)
VIR_WARN0("Unable to reset PCI device after assign failure");
else if (hostdev->managed &&
pciReAttachDevice(pci) < 0)
VIR_WARN0("Unable to re-attach PCI device after assign failure");
pciFreeDevice(pci);
VIR_FREE(devstr);
VIR_FREE(configfd_name);
if (configfd >= 0)
close(configfd);