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https://gitlab.com/libvirt/libvirt.git
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qemu: set/use proper pciConnectFlags during hotplug
Before now, all the qemu hotplug functions assumed that all devices to
be hotplugged were legacy PCI endpoint devices
(VIR_PCI_CONNECT_TYPE_PCI_DEVICE). This worked out "okay", because all
devices *are* legacy PCI endpoint devices on x86/440fx machinetypes,
and hotplug didn't work properly on machinetypes using PCIe anyway
(hotplugging onto a legacy PCI slot doesn't work, and until commit
b87703cf
any attempt to manually specify a PCIe address for a
hotplugged device would be erroneously rejected).
This patch makes all qemu hotplug operations honor the pciConnectFlags
set by the single all-knowing function
qemuDomainDeviceCalculatePCIConnectFlags(). This is done in 3 steps,
but in a single commit since we would have to touch the other points
at each step anyway:
1) add a flags argument to the hypervisor-agnostic
virDomainPCIAddressEnsureAddr() (previously it hardcoded
..._PCI_DEVICE)
2) add a new qemu-specific function qemuDomainEnsurePCIAddress() which
gets the correct pciConnectFlags for the device from
qemuDomainDeviceConnectFlags(), then calls
virDomainPCIAddressEnsureAddr().
3) in qemu_hotplug.c replace all calls to
virDomainPCIAddressEnsureAddr() with calls to
qemuDomainEnsurePCIAddress()
So in effect, we're putting a "shim" on top of all calls to
virDomainPCIAddressEnsureAddr() that sets the right pciConnectFlags.
This commit is contained in:
parent
7f784f576b
commit
abb7a4bd6b
@ -487,17 +487,11 @@ virDomainPCIAddressReserveSlot(virDomainPCIAddressSetPtr addrs,
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int
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virDomainPCIAddressEnsureAddr(virDomainPCIAddressSetPtr addrs,
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virDomainDeviceInfoPtr dev)
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virDomainDeviceInfoPtr dev,
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virDomainPCIConnectFlags flags)
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{
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int ret = -1;
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char *addrStr = NULL;
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/* Flags should be set according to the particular device,
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* but only the caller knows the type of device. Currently this
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* function is only used for hot-plug, though, and hot-plug is
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* only supported for standard PCI devices, so we can safely use
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* the setting below */
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virDomainPCIConnectFlags flags = (VIR_PCI_CONNECT_HOTPLUGGABLE |
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VIR_PCI_CONNECT_TYPE_PCI_DEVICE);
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if (!(addrStr = virDomainPCIAddressAsString(&dev->addr.pci)))
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goto cleanup;
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@ -144,7 +144,8 @@ int virDomainPCIAddressReserveSlot(virDomainPCIAddressSetPtr addrs,
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int virDomainPCIAddressEnsureAddr(virDomainPCIAddressSetPtr addrs,
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virDomainDeviceInfoPtr dev)
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virDomainDeviceInfoPtr dev,
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virDomainPCIConnectFlags flags)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int virDomainPCIAddressReleaseAddr(virDomainPCIAddressSetPtr addrs,
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@ -2230,6 +2230,36 @@ qemuDomainAssignAddresses(virDomainDefPtr def,
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return 0;
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}
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/**
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* qemuDomainEnsurePCIAddress:
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*
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* @obj: the virDomainObjPtr for the domain. This will include
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* qemuCaps and address cache (if there is one)
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*
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* @dev: the device that we need to ensure has a PCI address
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*
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* if @dev should have a PCI address but doesn't, assign an address on
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* a compatible PCI bus, and set it in @dev->...info. If there is an
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* address already, validate that it is on a compatible bus, based on
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* @dev->...info.pciConnectFlags.
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*
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* returns 0 on success -1 on failure.
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*/
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int
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qemuDomainEnsurePCIAddress(virDomainObjPtr obj,
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virDomainDeviceDefPtr dev)
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{
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qemuDomainObjPrivatePtr priv = obj->privateData;
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virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);
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if (!info)
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return 0;
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qemuDomainFillDevicePCIConnectFlags(obj->def, dev, priv->qemuCaps);
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return virDomainPCIAddressEnsureAddr(priv->pciaddrs, info,
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info->pciConnectFlags);
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}
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void
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qemuDomainReleaseDeviceAddress(virDomainObjPtr vm,
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@ -37,6 +37,10 @@ int qemuDomainAssignAddresses(virDomainDefPtr def,
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bool newDomain)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int qemuDomainEnsurePCIAddress(virDomainObjPtr obj,
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virDomainDeviceDefPtr dev)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void qemuDomainReleaseDeviceAddress(virDomainObjPtr vm,
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virDomainDeviceInfoPtr info,
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const char *devstr);
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@ -304,6 +304,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
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int ret = -1;
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int rv;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_DISK, { .disk = disk } };
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virErrorPtr orig_err;
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char *devstr = NULL;
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char *drivestr = NULL;
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@ -344,7 +345,7 @@ qemuDomainAttachVirtioDiskDevice(virConnectPtr conn,
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goto error;
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} else if (!disk->info.type ||
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disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
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if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, &disk->info) < 0)
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if (qemuDomainEnsurePCIAddress(vm, &dev) < 0)
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goto error;
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}
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releaseaddr = true;
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@ -462,6 +463,8 @@ int qemuDomainAttachControllerDevice(virQEMUDriverPtr driver,
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const char* type = virDomainControllerTypeToString(controller->type);
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char *devstr = NULL;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_CONTROLLER,
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{ .controller = controller } };
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virDomainCCWAddressSetPtr ccwaddrs = NULL;
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bool releaseaddr = false;
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@ -501,7 +504,7 @@ int qemuDomainAttachControllerDevice(virQEMUDriverPtr driver,
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if (controller->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE ||
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controller->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
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if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, &controller->info) < 0)
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if (qemuDomainEnsurePCIAddress(vm, &dev) < 0)
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goto cleanup;
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} else if (controller->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
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if (!(ccwaddrs = qemuDomainCCWAddrSetCreateFromDomain(vm->def)))
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@ -935,6 +938,7 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
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virDomainNetDefPtr net)
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{
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_NET, { .net = net } };
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virErrorPtr originalError = NULL;
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char **tapfdName = NULL;
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int *tapfd = NULL;
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@ -1133,7 +1137,7 @@ qemuDomainAttachNetDevice(virQEMUDriverPtr driver,
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("virtio-s390 net device cannot be hotplugged."));
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goto cleanup;
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} else if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, &net->info) < 0) {
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} else if (qemuDomainEnsurePCIAddress(vm, &dev) < 0) {
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goto cleanup;
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}
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@ -1365,6 +1369,8 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
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virDomainHostdevDefPtr hostdev)
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{
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_HOSTDEV,
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{ .hostdev = hostdev } };
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int ret;
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char *devstr = NULL;
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int configfd = -1;
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@ -1435,7 +1441,7 @@ qemuDomainAttachHostPCIDevice(virQEMUDriverPtr driver,
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if (qemuAssignDeviceHostdevAlias(vm->def, &hostdev->info->alias, -1) < 0)
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goto error;
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if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, hostdev->info) < 0)
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if (qemuDomainEnsurePCIAddress(vm, &dev) < 0)
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goto error;
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releaseaddr = true;
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if (backend != VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO &&
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@ -1771,6 +1777,7 @@ qemuDomainAttachChrDeviceAssignAddr(virDomainObjPtr vm,
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{
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virDomainDefPtr def = vm->def;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_CHR, { .chr = chr } };
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if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE &&
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chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO) {
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@ -1780,7 +1787,7 @@ qemuDomainAttachChrDeviceAssignAddr(virDomainObjPtr vm,
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} else if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
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chr->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PCI) {
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if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, &chr->info) < 0)
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if (qemuDomainEnsurePCIAddress(vm, &dev) < 0)
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return -1;
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return 1;
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@ -1936,6 +1943,7 @@ qemuDomainAttachRNGDevice(virConnectPtr conn,
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{
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virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_RNG, { .rng = rng } };
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virErrorPtr orig_err;
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char *devstr = NULL;
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char *charAlias = NULL;
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@ -1978,7 +1986,7 @@ qemuDomainAttachRNGDevice(virConnectPtr conn,
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if (rng->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE ||
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rng->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
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if (virDomainPCIAddressEnsureAddr(priv->pciaddrs, &rng->info) < 0)
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if (qemuDomainEnsurePCIAddress(vm, &dev) < 0)
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goto cleanup;
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} else if (rng->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
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if (!(ccwaddrs = qemuDomainCCWAddrSetCreateFromDomain(vm->def)))
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@ -2496,6 +2504,7 @@ qemuDomainAttachShmemDevice(virQEMUDriverPtr driver,
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virErrorPtr orig_err = NULL;
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virJSONValuePtr props = NULL;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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virDomainDeviceDef dev = { VIR_DOMAIN_DEVICE_SHMEM, { .shmem = shmem } };
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switch ((virDomainShmemModel)shmem->model) {
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case VIR_DOMAIN_SHMEM_MODEL_IVSHMEM_PLAIN:
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@ -2522,7 +2531,7 @@ qemuDomainAttachShmemDevice(virQEMUDriverPtr driver,
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if ((shmem->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE ||
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shmem->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
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(virDomainPCIAddressEnsureAddr(priv->pciaddrs, &shmem->info) < 0))
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(qemuDomainEnsurePCIAddress(vm, &dev) < 0))
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return -1;
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if (!(shmstr = qemuBuildShmemDevStr(vm->def, shmem, priv->qemuCaps)))
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