On 10/17/2011 05:07 AM, Osier Yang wrote:
This patch fixes two problems:
1) The device will be reattached to host even if it's not
managed, as there is a "pciDeviceSetManaged".
2) The device won't be reattached to host with original
driver properly. As it doesn't honor the device original
properties which are maintained by driver->activePciHostdevs.
---
src/qemu/qemu_hotplug.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index bfa524b..f3f0060 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1956,6 +1956,7 @@ int qemuDomainDetachHostPciDevice(struct qemud_driver *driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
int i, ret;
pciDevice *pci;
+ pciDevice *activePci;
for (i = 0 ; i< vm->def->nhostdevs ; i++) {
if (vm->def->hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
@@ -2015,16 +2016,15 @@ int qemuDomainDetachHostPciDevice(struct qemud_driver *driver,
detach->source.subsys.u.pci.bus,
detach->source.subsys.u.pci.slot,
detach->source.subsys.u.pci.function);
- if (!pci)
- ret = -1;
- else {
- pciDeviceSetManaged(pci, detach->managed);
- pciDeviceListDel(driver->activePciHostdevs, pci);
- if (pciResetDevice(pci, driver->activePciHostdevs, NULL)< 0)
+ if (pci) {
+ activePci = pciDeviceListSteal(driver->activePciHostdevs, pci);
+ if (pciResetDevice(activePci, driver->activePciHostdevs, NULL)< 0)
ret = -1;
- pciDeviceReAttachInit(pci);
- qemuReattachPciDevice(pci, driver);
+ qemuReattachPciDevice(activePci, driver);
This calls qemuReattachPciDevice even if pciResetDevice failed. I don't
think that is right.
However, I agree with you that hot-unplug cannot make a device managed
if it was not already managed, and also that it should be using the
device attributes from driver->activePciHostdevs rather than from the
just-created pci in order to properly decide how much work to do on the
unplug event.
--
Eric Blake eblake@xxxxxxxxxx +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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