[libvirt] [PATCH 22/26] qemu: Use PHBs when extending the guest PCI topology

When looking for slots suitable for a PCI device, libvirt might need to add an extra PCI controller: for pSeries guests, we want that extra controller to be a PHB (pci-root) rather than a PCI bridge. --- Better viewed with 'git diff -w'. src/conf/domain_addr.c | 56 +++++++++-------- src/conf/domain_addr.h | 2 + src/qemu/qemu_domain_address.c | 4 ++ .../qemuxml2argv-pseries-many-buses-1.args | 4 +- .../qemuxml2argv-pseries-many-devices.args | 66 ++++++++++---------- tests/qemuxml2argvtest.c | 2 - .../qemuxml2xmlout-pseries-many-buses-1.xml | 7 +-- .../qemuxml2xmlout-pseries-many-devices.xml | 71 +++++++++++----------- tests/qemuxml2xmltest.c | 2 - 9 files changed, 110 insertions(+), 104 deletions(-) diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c index d173766..e6a6399 100644 --- a/src/conf/domain_addr.c +++ b/src/conf/domain_addr.c @@ -383,33 +383,39 @@ virDomainPCIAddressSetGrow(virDomainPCIAddressSetPtr addrs, */ if (flags & VIR_PCI_CONNECT_TYPE_PCI_DEVICE) { - model = VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE; + if (addrs->multipleRootsSupported) { + /* Use a pci-root controller to expand the guest's PCI + * topology if it supports having more than one */ + model = VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT; + } else { + model = VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE; - /* if there aren't yet any buses that will accept a - * pci-bridge, and the caller is asking for one, we'll need to - * add a dmi-to-pci-bridge first. - */ - needDMIToPCIBridge = true; - for (i = 0; i < addrs->nbuses; i++) { - if (addrs->buses[i].flags & VIR_PCI_CONNECT_TYPE_PCI_BRIDGE) { - needDMIToPCIBridge = false; - break; - } - } - if (needDMIToPCIBridge && add == 1) { - /* We need to add a single pci-bridge to provide the bus - * our legacy PCI device will be plugged into; however, we - * have also determined that there isn't yet any proper - * place to connect that pci-bridge we're about to add (on - * a system with pcie-root, that "proper place" would be a - * dmi-to-pci-bridge". So, to give the pci-bridge a place - * to connect, we increase the count of buses to add, - * while also incrementing the bus number in the address - * for the device (since the pci-bridge will now be at an - * index 1 higher than the caller had anticipated). + /* if there aren't yet any buses that will accept a + * pci-bridge, and the caller is asking for one, we'll need to + * add a dmi-to-pci-bridge first. */ - add++; - addr->bus++; + needDMIToPCIBridge = true; + for (i = 0; i < addrs->nbuses; i++) { + if (addrs->buses[i].flags & VIR_PCI_CONNECT_TYPE_PCI_BRIDGE) { + needDMIToPCIBridge = false; + break; + } + } + if (needDMIToPCIBridge && add == 1) { + /* We need to add a single pci-bridge to provide the bus + * our legacy PCI device will be plugged into; however, we + * have also determined that there isn't yet any proper + * place to connect that pci-bridge we're about to add (on + * a system with pcie-root, that "proper place" would be a + * dmi-to-pci-bridge". So, to give the pci-bridge a place + * to connect, we increase the count of buses to add, + * while also incrementing the bus number in the address + * for the device (since the pci-bridge will now be at an + * index 1 higher than the caller had anticipated). + */ + add++; + addr->bus++; + } } } else if (flags & VIR_PCI_CONNECT_TYPE_PCI_BRIDGE && addrs->buses[0].model == VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT) { diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h index 7704061..1849d2b 100644 --- a/src/conf/domain_addr.h +++ b/src/conf/domain_addr.h @@ -108,6 +108,8 @@ struct _virDomainPCIAddressSet { size_t nbuses; bool dryRun; /* on a dry run, new buses are auto-added and addresses aren't saved in device infos */ + /* If true, the guest can have multiple pci-root controllers */ + bool multipleRootsSupported; }; typedef struct _virDomainPCIAddressSet virDomainPCIAddressSet; typedef virDomainPCIAddressSet *virDomainPCIAddressSetPtr; diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c index 9585fe5..08773c0 100644 --- a/src/qemu/qemu_domain_address.c +++ b/src/qemu/qemu_domain_address.c @@ -1056,6 +1056,10 @@ qemuDomainPCIAddressSetCreate(virDomainDefPtr def, addrs->dryRun = dryRun; + /* pSeries domains support multiple pci-root controllers */ + if (qemuDomainIsPSeries(def)) + addrs->multipleRootsSupported = true; + for (i = 0; i < def->ncontrollers; i++) { virDomainControllerDefPtr cont = def->controllers[i]; size_t idx = cont->idx; diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-buses-1.args b/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-buses-1.args index bf78fc1..eb5ccbd 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-buses-1.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-buses-1.args @@ -18,5 +18,5 @@ QEMU_AUDIO_DRV=none \ server,nowait \ -mon chardev=charmonitor,id=monitor,mode=readline \ -boot c \ --device pci-bridge,chassis_nr=1,id=pci.1,bus=pci.0,addr=0x1 \ --device virtio-scsi-pci,id=scsi0,bus=pci.1,addr=0x1 +-device spapr-pci-host-bridge,index=1,id=pci.1 \ +-device virtio-scsi-pci,id=scsi0,bus=pci.1.0,addr=0x1 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-devices.args b/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-devices.args index 1db4533..f20bc52 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-devices.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-pseries-many-devices.args @@ -18,36 +18,36 @@ QEMU_AUDIO_DRV=none \ server,nowait \ -mon chardev=charmonitor,id=monitor,mode=readline \ -boot c \ --device pci-bridge,chassis_nr=1,id=pci.1,bus=pci.0,addr=0x1 \ --device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 \ --device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x3 \ --device virtio-scsi-pci,id=scsi2,bus=pci.0,addr=0x4 \ --device virtio-scsi-pci,id=scsi3,bus=pci.0,addr=0x5 \ --device virtio-scsi-pci,id=scsi4,bus=pci.0,addr=0x6 \ --device virtio-scsi-pci,id=scsi5,bus=pci.0,addr=0x7 \ --device virtio-scsi-pci,id=scsi6,bus=pci.0,addr=0x8 \ --device virtio-scsi-pci,id=scsi7,bus=pci.0,addr=0x9 \ --device virtio-scsi-pci,id=scsi8,bus=pci.0,addr=0xa \ --device virtio-scsi-pci,id=scsi9,bus=pci.0,addr=0xb \ --device virtio-scsi-pci,id=scsi10,bus=pci.0,addr=0xc \ --device virtio-scsi-pci,id=scsi11,bus=pci.0,addr=0xd \ --device virtio-scsi-pci,id=scsi12,bus=pci.0,addr=0xe \ --device virtio-scsi-pci,id=scsi13,bus=pci.0,addr=0xf \ --device virtio-scsi-pci,id=scsi14,bus=pci.0,addr=0x10 \ --device virtio-scsi-pci,id=scsi15,bus=pci.0,addr=0x11 \ --device virtio-scsi-pci,id=scsi16,bus=pci.0,addr=0x12 \ --device virtio-scsi-pci,id=scsi17,bus=pci.0,addr=0x13 \ --device virtio-scsi-pci,id=scsi18,bus=pci.0,addr=0x14 \ --device virtio-scsi-pci,id=scsi19,bus=pci.0,addr=0x15 \ --device virtio-scsi-pci,id=scsi20,bus=pci.0,addr=0x16 \ --device virtio-scsi-pci,id=scsi21,bus=pci.0,addr=0x17 \ --device virtio-scsi-pci,id=scsi22,bus=pci.0,addr=0x18 \ --device virtio-scsi-pci,id=scsi23,bus=pci.0,addr=0x19 \ --device virtio-scsi-pci,id=scsi24,bus=pci.0,addr=0x1a \ --device virtio-scsi-pci,id=scsi25,bus=pci.0,addr=0x1b \ --device virtio-scsi-pci,id=scsi26,bus=pci.0,addr=0x1c \ --device virtio-scsi-pci,id=scsi27,bus=pci.0,addr=0x1d \ --device virtio-scsi-pci,id=scsi28,bus=pci.0,addr=0x1e \ --device virtio-scsi-pci,id=scsi29,bus=pci.0,addr=0x1f \ --device virtio-scsi-pci,id=scsi30,bus=pci.1,addr=0x1 \ --device virtio-scsi-pci,id=scsi31,bus=pci.1,addr=0x2 +-device spapr-pci-host-bridge,index=1,id=pci.1 \ +-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x1 \ +-device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=0x2 \ +-device virtio-scsi-pci,id=scsi2,bus=pci.0,addr=0x3 \ +-device virtio-scsi-pci,id=scsi3,bus=pci.0,addr=0x4 \ +-device virtio-scsi-pci,id=scsi4,bus=pci.0,addr=0x5 \ +-device virtio-scsi-pci,id=scsi5,bus=pci.0,addr=0x6 \ +-device virtio-scsi-pci,id=scsi6,bus=pci.0,addr=0x7 \ +-device virtio-scsi-pci,id=scsi7,bus=pci.0,addr=0x8 \ +-device virtio-scsi-pci,id=scsi8,bus=pci.0,addr=0x9 \ +-device virtio-scsi-pci,id=scsi9,bus=pci.0,addr=0xa \ +-device virtio-scsi-pci,id=scsi10,bus=pci.0,addr=0xb \ +-device virtio-scsi-pci,id=scsi11,bus=pci.0,addr=0xc \ +-device virtio-scsi-pci,id=scsi12,bus=pci.0,addr=0xd \ +-device virtio-scsi-pci,id=scsi13,bus=pci.0,addr=0xe \ +-device virtio-scsi-pci,id=scsi14,bus=pci.0,addr=0xf \ +-device virtio-scsi-pci,id=scsi15,bus=pci.0,addr=0x10 \ +-device virtio-scsi-pci,id=scsi16,bus=pci.0,addr=0x11 \ +-device virtio-scsi-pci,id=scsi17,bus=pci.0,addr=0x12 \ +-device virtio-scsi-pci,id=scsi18,bus=pci.0,addr=0x13 \ +-device virtio-scsi-pci,id=scsi19,bus=pci.0,addr=0x14 \ +-device virtio-scsi-pci,id=scsi20,bus=pci.0,addr=0x15 \ +-device virtio-scsi-pci,id=scsi21,bus=pci.0,addr=0x16 \ +-device virtio-scsi-pci,id=scsi22,bus=pci.0,addr=0x17 \ +-device virtio-scsi-pci,id=scsi23,bus=pci.0,addr=0x18 \ +-device virtio-scsi-pci,id=scsi24,bus=pci.0,addr=0x19 \ +-device virtio-scsi-pci,id=scsi25,bus=pci.0,addr=0x1a \ +-device virtio-scsi-pci,id=scsi26,bus=pci.0,addr=0x1b \ +-device virtio-scsi-pci,id=scsi27,bus=pci.0,addr=0x1c \ +-device virtio-scsi-pci,id=scsi28,bus=pci.0,addr=0x1d \ +-device virtio-scsi-pci,id=scsi29,bus=pci.0,addr=0x1e \ +-device virtio-scsi-pci,id=scsi30,bus=pci.0,addr=0x1f \ +-device virtio-scsi-pci,id=scsi31,bus=pci.1.0,addr=0x1 diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 7a6acd5..296c93b 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1706,12 +1706,10 @@ mymain(void) DO_TEST("pseries-many-devices", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, - QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_VIRTIO_SCSI); DO_TEST("pseries-many-buses-1", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, - QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_VIRTIO_SCSI); DO_TEST("pseries-many-buses-2", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-buses-1.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-buses-1.xml index 010a3be..1b2845d 100644 --- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-buses-1.xml +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-buses-1.xml @@ -22,10 +22,9 @@ <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/> </controller> <controller type='usb' index='0' model='none'/> - <controller type='pci' index='1' model='pci-bridge'> - <model name='pci-bridge'/> - <target chassisNr='1'/> - <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> + <controller type='pci' index='1' model='pci-root'> + <model name='spapr-pci-host-bridge'/> + <target index='1'/> </controller> <memballoon model='none'/> <panic model='pseries'/> diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-devices.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-devices.xml index 336373b..5a78590 100644 --- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-devices.xml +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-many-devices.xml @@ -19,106 +19,105 @@ <target index='0'/> </controller> <controller type='scsi' index='0' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> </controller> <controller type='scsi' index='1' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </controller> <controller type='scsi' index='2' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </controller> <controller type='scsi' index='3' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> <controller type='scsi' index='4' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </controller> <controller type='scsi' index='5' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <controller type='scsi' index='6' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <controller type='scsi' index='7' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> <controller type='scsi' index='8' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </controller> <controller type='scsi' index='9' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </controller> <controller type='scsi' index='10' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/> </controller> <controller type='scsi' index='11' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/> </controller> <controller type='scsi' index='12' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/> </controller> <controller type='scsi' index='13' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/> </controller> <controller type='scsi' index='14' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/> </controller> <controller type='scsi' index='15' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x11' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/> </controller> <controller type='scsi' index='16' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x12' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x11' function='0x0'/> </controller> <controller type='scsi' index='17' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x13' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x12' function='0x0'/> </controller> <controller type='scsi' index='18' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x14' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x13' function='0x0'/> </controller> <controller type='scsi' index='19' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x15' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x14' function='0x0'/> </controller> <controller type='scsi' index='20' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x16' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x15' function='0x0'/> </controller> <controller type='scsi' index='21' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x17' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x16' function='0x0'/> </controller> <controller type='scsi' index='22' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x18' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x17' function='0x0'/> </controller> <controller type='scsi' index='23' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x19' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x18' function='0x0'/> </controller> <controller type='scsi' index='24' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1a' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x19' function='0x0'/> </controller> <controller type='scsi' index='25' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1a' function='0x0'/> </controller> <controller type='scsi' index='26' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1c' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/> </controller> <controller type='scsi' index='27' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1c' function='0x0'/> </controller> <controller type='scsi' index='28' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0'/> </controller> <controller type='scsi' index='29' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/> </controller> <controller type='scsi' index='30' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x0'/> </controller> <controller type='scsi' index='31' model='virtio-scsi'> - <address type='pci' domain='0x0000' bus='0x01' slot='0x02' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/> </controller> <controller type='usb' index='0' model='none'/> - <controller type='pci' index='1' model='pci-bridge'> - <model name='pci-bridge'/> - <target chassisNr='1'/> - <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> + <controller type='pci' index='1' model='pci-root'> + <model name='spapr-pci-host-bridge'/> + <target index='1'/> </controller> <memballoon model='none'/> <panic model='pseries'/> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index b75807c..15ac744 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -680,12 +680,10 @@ mymain(void) DO_TEST("pseries-many-devices", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, - QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_VIRTIO_SCSI); DO_TEST("pseries-many-buses-1", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, - QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_VIRTIO_SCSI); DO_TEST("pseries-many-buses-2", QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG, -- 2.7.5