[libvirt] [PATCH 16/34] Clear assigned PCI devices at shutdown

The PCI device addresses are only valid while the VM is running, since they are auto-assigned by QEMU. After shutdown they must all be cleared. Future QEMU driver enhancement will allow for persistent PCI address assignment * src/conf/domain_conf.h, src/conf/domain_conf.c, src/libvirt_private.syms Add virDomainDefClearPCIAddresses() method for wiping out auto assigned PCI addresses * src/qemu/qemu_driver.c: Clear PCI addresses at VM shutdown --- src/conf/domain_conf.c | 36 ++++++++++++++++++++++++++++++++++++ src/conf/domain_conf.h | 2 ++ src/libvirt_private.syms | 1 + src/qemu/qemu_driver.c | 2 ++ 4 files changed, 41 insertions(+), 0 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 5edd060..ef5dbe9 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -816,6 +816,42 @@ void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info) } +static void virDomainDeviceInfoClearField(virDomainDeviceInfoPtr info) +{ + if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) { + memset(&info->addr, 0, sizeof(info->addr)); + info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE; + } +} + + +static void virDomainDefClearDeviceInfo(virDomainDefPtr def) +{ + int i; + + for (i = 0; i < def->ndisks ; i++) + virDomainDeviceInfoClearField(&def->disks[i]->info); + for (i = 0; i < def->nnets ; i++) + virDomainDeviceInfoClearField(&def->nets[i]->info); + for (i = 0; i < def->nsounds ; i++) + virDomainDeviceInfoClearField(&def->sounds[i]->info); + for (i = 0; i < def->nhostdevs ; i++) + virDomainDeviceInfoClearField(&def->hostdevs[i]->info); + for (i = 0; i < def->nvideos ; i++) + virDomainDeviceInfoClearField(&def->videos[i]->info); + for (i = 0; i < def->ncontrollers ; i++) + virDomainDeviceInfoClearField(&def->controllers[i]->info); + if (def->watchdog) + virDomainDeviceInfoClearField(&def->watchdog->info); +} + + +void virDomainDefClearPCIAddresses(virDomainDefPtr def) +{ + virDomainDefClearDeviceInfo(def); +} + + /* Generate a string representation of a device address * @param address Device address to stringify */ diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 1831d17..a6f7ab2 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -736,6 +736,8 @@ int virDomainDevicePCIAddressIsValid(virDomainDevicePCIAddressPtr addr); int virDomainDeviceDriveAddressIsValid(virDomainDeviceDriveAddressPtr addr); int virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info); void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info); +void virDomainDefClearPCIAddresses(virDomainDefPtr def); + void virDomainDefFree(virDomainDefPtr vm); void virDomainObjRef(virDomainObjPtr vm); /* Returns 1 if the object was freed, 0 if more refs exist */ diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index a4a02e7..678d610 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -187,6 +187,7 @@ virDomainControllerTypeToString; virDomainControllerDefFree; virDomainDeviceAddressTypeToString; virDomainDefAddDiskControllers; +virDomainDefClearPCIAddresses; # domain_event.h diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index cd406ec..6a3af61 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -3032,6 +3032,8 @@ static void qemudShutdownVMDaemon(virConnectPtr conn, VIR_FREE(vm->def->seclabel.imagelabel); } + virDomainDefClearPCIAddresses(vm->def); + if (qemuDomainSetAllDeviceOwnership(conn, driver, vm->def, 1) < 0) VIR_WARN("Failed to restore all device ownership for %s", vm->def->name); -- 1.6.5.2