Merge pull request #1954 from marcel-apf/remove-pc

Remove the pc machine

docs/use-cases/Intel-GPU-passthrough-and-Kata.md

@@ -65,8 +65,8 @@ configuration in the Kata `configuration.toml` file as shown below.
 $ sudo sed -i -e 's/^# *\(hotplug_vfio_on_root_bus\).*=.*$/\1 = true/g' /usr/share/defaults/kata-containers/configuration.toml
 ```
 
-Make sure you are using the `pc` machine type by verifying `machine_type = "pc"` is
-set in the `configuration.toml`.
+Make sure you are using the `q35` machine type by verifying `machine_type = "q35"` is
+set in the `configuration.toml`. Make sure `pcie_root_port` is set to a positive value.
 
 ## Build Kata Containers kernel with GPU support
 

docs/use-cases/Nvidia-GPU-passthrough-and-Kata.md

@@ -75,13 +75,6 @@ To use non-large BARs devices (for example, Nvidia Tesla T4), you need Kata vers
 Follow the [Kata Containers setup instructions](../install/README.md)
 to install the latest version of Kata.
 
-The following configuration in the Kata `configuration.toml` file as shown below can work:
-```
-machine_type = "pc"
-
-hotplug_vfio_on_root_bus = true
-```
-
 To use large BARs devices (for example, Nvidia Tesla P100), you need Kata version 1.11.0 or above.
 
 The following configuration in the Kata `configuration.toml` file as shown below can work:

src/runtime/cli/config/configuration-fc.toml.in

@@ -178,7 +178,7 @@ block_device_driver = "@DEFBLOCKSTORAGEDRIVER_FC@"
 # VFIO devices are hotplugged on a bridge by default.
 # Enable hotplugging on root bus. This may be required for devices with
 # a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge. This value is valid for "pc" machine type.
+# a bridge.
 # Default false
 #hotplug_vfio_on_root_bus = true
 

src/runtime/cli/config/configuration-qemu.toml.in

@@ -277,7 +277,7 @@ pflashes = []
 # VFIO devices are hotplugged on a bridge by default.
 # Enable hotplugging on root bus. This may be required for devices with
 # a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge. This value is valid for "pc" machine type.
+# a bridge.
 # Default false
 #hotplug_vfio_on_root_bus = true
 

src/runtime/go.mod

@@ -31,7 +31,7 @@ require (
 	github.com/gogo/protobuf v1.3.1
 	github.com/hashicorp/go-multierror v1.0.0
 	github.com/intel-go/cpuid v0.0.0-20210602155658-5747e5cec0d9
-	github.com/kata-containers/govmm v0.0.0-20210520142420-eb57f004d89f
+	github.com/kata-containers/govmm v0.0.0-20210622075516-263136e69ac8
 	github.com/mdlayher/vsock v0.0.0-20191108225356-d9c65923cb8f
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/opencontainers/runc v1.0.0-rc9.0.20200102164712-2b52db75279c

src/runtime/go.sum

@@ -274,6 +274,8 @@ github.com/kata-containers/govmm v0.0.0-20210428163604-f0e9a35308ee h1:M4N7AdSHg
 github.com/kata-containers/govmm v0.0.0-20210428163604-f0e9a35308ee/go.mod h1:VmAHbsL5lLfzHW/MNL96NVLF840DNEV5i683kISgFKk=
 github.com/kata-containers/govmm v0.0.0-20210520142420-eb57f004d89f h1:jXMZY7GIz5kSv3/Rdiesg1WMvgXJKNOk3KxwxgNWAVk=
 github.com/kata-containers/govmm v0.0.0-20210520142420-eb57f004d89f/go.mod h1:VmAHbsL5lLfzHW/MNL96NVLF840DNEV5i683kISgFKk=
+github.com/kata-containers/govmm v0.0.0-20210622075516-263136e69ac8 h1:ZQ/qgoFsgmvk7AikgW1pI4dFaXfkUEVn+KK63ju3vgU=
+github.com/kata-containers/govmm v0.0.0-20210622075516-263136e69ac8/go.mod h1:VmAHbsL5lLfzHW/MNL96NVLF840DNEV5i683kISgFKk=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=

src/runtime/pkg/katautils/config-settings.go.in

@@ -20,7 +20,7 @@ var defaultCPUFeatures = ""
 var systemdUnitName = "kata-containers.target"
 
 const defaultKernelParams = ""
-const defaultMachineType = "pc"
+const defaultMachineType = "q35"
 
 const defaultVCPUCount uint32 = 1
 const defaultMaxVCPUCount uint32 = 0

src/runtime/vendor/modules.txt

@@ -143,8 +143,6 @@ github.com/coreos/go-systemd/dbus
 github.com/cri-o/cri-o/pkg/annotations
 # github.com/davecgh/go-spew v1.1.1
 github.com/davecgh/go-spew/spew
-# github.com/dlespiau/covertool v0.0.0-20180314162135-b0c4c6d0583a
-## explicit
 # github.com/docker/distribution v2.7.1+incompatible
 ## explicit
 github.com/docker/distribution/digestset
@@ -224,7 +222,7 @@ github.com/hashicorp/go-multierror
 # github.com/intel-go/cpuid v0.0.0-20210602155658-5747e5cec0d9
 ## explicit
 github.com/intel-go/cpuid
-# github.com/kata-containers/govmm v0.0.0-20210520142420-eb57f004d89f
+# github.com/kata-containers/govmm v0.0.0-20210622075516-263136e69ac8
 ## explicit
 github.com/kata-containers/govmm/qemu
 # github.com/konsorten/go-windows-terminal-sequences v1.0.1

src/runtime/virtcontainers/qemu.go

@@ -708,7 +708,7 @@ func (q *qemu) getMemArgs() (bool, string, string, error) {
 	return share, target, memoryBack, nil
 }
 
-func (q *qemu) setupVirtioMem() error {
+func (q *qemu) setupVirtioMem(ctx context.Context) error {
 	maxMem, err := q.hostMemMB()
 	if err != nil {
 		return err
@@ -724,7 +724,19 @@ func (q *qemu) setupVirtioMem() error {
 	if err = q.qmpSetup(); err != nil {
 		return err
 	}
-	err = q.qmpMonitorCh.qmp.ExecMemdevAdd(q.qmpMonitorCh.ctx, memoryBack, "virtiomem", target, sizeMB, share, "virtio-mem-pci", "virtiomem0")
+
+	addr, bridge, err := q.arch.addDeviceToBridge(ctx, "virtiomem-dev", types.PCI)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		if err != nil {
+			q.arch.removeDeviceFromBridge("virtiomem-dev")
+		}
+	}()
+
+	err = q.qmpMonitorCh.qmp.ExecMemdevAdd(q.qmpMonitorCh.ctx, memoryBack, "virtiomem", target, sizeMB, share, "virtio-mem-pci", "virtiomem0", addr, bridge.ID)
 	if err == nil {
 		q.config.VirtioMem = true
 		q.Logger().Infof("Setup %dMB virtio-mem-pci success", sizeMB)
@@ -832,7 +844,7 @@ func (q *qemu) startSandbox(ctx context.Context, timeout int) error {
 	}
 
 	if q.config.VirtioMem {
-		err = q.setupVirtioMem()
+		err = q.setupVirtioMem(ctx)
 	}
 
 	return err
@@ -2095,8 +2107,6 @@ func genericBridges(number uint32, machineType string) []types.Bridge {
 	case QemuQ35:
 		// currently only pci bridges are supported
 		// qemu-2.10 will introduce pcie bridges
-		fallthrough
-	case QemuPC:
 		bt = types.PCI
 	case QemuVirt:
 		bt = types.PCI

src/runtime/virtcontainers/qemu_amd64.go

@@ -29,7 +29,7 @@ type qemuAmd64 struct {
 const (
 	defaultQemuPath = "/usr/bin/qemu-system-x86_64"
 
-	defaultQemuMachineType = QemuPC
+	defaultQemuMachineType = QemuQ35
 
 	defaultQemuMachineOptions = "accel=kvm,kernel_irqchip"
 
@@ -44,7 +44,6 @@ const (
 
 var qemuPaths = map[string]string{
 	QemuPCLite:  "/usr/bin/qemu-lite-system-x86_64",
-	QemuPC:      defaultQemuPath,
 	QemuQ35:     defaultQemuPath,
 	QemuMicrovm: defaultQemuPath,
 }
@@ -71,10 +70,6 @@ var supportedQemuMachines = []govmmQemu.Machine{
 		Type:    QemuPCLite,
 		Options: defaultQemuMachineOptions,
 	},
-	{
-		Type:    QemuPC,
-		Options: defaultQemuMachineOptions,
-	},
 	{
 		Type:    QemuQ35,
 		Options: defaultQemuMachineOptions,
@@ -158,8 +153,7 @@ func newQemuArch(config HypervisorConfig) (qemuArch, error) {
 func (q *qemuAmd64) capabilities() types.Capabilities {
 	var caps types.Capabilities
 
-	if q.qemuMachine.Type == QemuPC ||
-		q.qemuMachine.Type == QemuQ35 ||
+	if q.qemuMachine.Type == QemuQ35 ||
 		q.qemuMachine.Type == QemuVirt {
 		caps.SetBlockDeviceHotplugSupport()
 	}

src/runtime/virtcontainers/qemu_amd64_test.go

@@ -42,38 +42,22 @@ func TestQemuAmd64BadMachineType(t *testing.T) {
 func TestQemuAmd64Capabilities(t *testing.T) {
 	assert := assert.New(t)
 
-	amd64 := newTestQemu(assert, QemuPC)
+	amd64 := newTestQemu(assert, QemuQ35)
 	caps := amd64.capabilities()
 	assert.True(caps.IsBlockDeviceHotplugSupported())
 
-	amd64 = newTestQemu(assert, QemuQ35)
-	caps = amd64.capabilities()
-	assert.True(caps.IsBlockDeviceHotplugSupported())
-
 	amd64 = newTestQemu(assert, QemuMicrovm)
 	caps = amd64.capabilities()
 	assert.False(caps.IsBlockDeviceHotplugSupported())
 }
 
 func TestQemuAmd64Bridges(t *testing.T) {
 	assert := assert.New(t)
-	amd64 := newTestQemu(assert, QemuPC)
 	len := 5
 
+	amd64 := newTestQemu(assert, QemuMicrovm)
 	amd64.bridges(uint32(len))
 	bridges := amd64.getBridges()
-	assert.Len(bridges, len)
-
-	for i, b := range bridges {
-		id := fmt.Sprintf("%s-bridge-%d", types.PCI, i)
-		assert.Equal(types.PCI, b.Type)
-		assert.Equal(id, b.ID)
-		assert.NotNil(b.Devices)
-	}
-
-	amd64 = newTestQemu(assert, QemuMicrovm)
-	amd64.bridges(uint32(len))
-	bridges = amd64.getBridges()
 	assert.Nil(bridges)
 
 	amd64 = newTestQemu(assert, QemuQ35)
@@ -91,7 +75,7 @@ func TestQemuAmd64Bridges(t *testing.T) {
 
 func TestQemuAmd64CPUModel(t *testing.T) {
 	assert := assert.New(t)
-	amd64 := newTestQemu(assert, QemuPC)
+	amd64 := newTestQemu(assert, QemuQ35)
 
 	expectedOut := defaultCPUModel
 	model := amd64.cpuModel()
@@ -108,7 +92,7 @@ func TestQemuAmd64CPUModel(t *testing.T) {
 
 func TestQemuAmd64MemoryTopology(t *testing.T) {
 	assert := assert.New(t)
-	amd64 := newTestQemu(assert, QemuPC)
+	amd64 := newTestQemu(assert, QemuQ35)
 	memoryOffset := uint64(1024)
 
 	hostMem := uint64(100)
@@ -139,7 +123,7 @@ func TestQemuAmd64AppendImage(t *testing.T) {
 	machinesCopy := make([]govmmQemu.Machine, len(supportedQemuMachines))
 	assert.Equal(len(supportedQemuMachines), copy(machinesCopy, supportedQemuMachines))
 
-	cfg := qemuConfig(QemuPC)
+	cfg := qemuConfig(QemuQ35)
 	cfg.ImagePath = f.Name()
 	cfg.DisableImageNvdimm = false
 	amd64, err := newQemuArch(cfg)
@@ -189,41 +173,18 @@ func TestQemuAmd64AppendBridges(t *testing.T) {
 	var devices []govmmQemu.Device
 	assert := assert.New(t)
 
-	// check PC
-	amd64 := newTestQemu(assert, QemuPC)
-
-	amd64.bridges(1)
-	bridges := amd64.getBridges()
-	assert.Len(bridges, 1)
-
-	devices = amd64.appendBridges(devices)
-	assert.Len(devices, 1)
-
-	expectedOut := []govmmQemu.Device{
-		govmmQemu.BridgeDevice{
-			Type:    govmmQemu.PCIBridge,
-			Bus:     defaultPCBridgeBus,
-			ID:      bridges[0].ID,
-			Chassis: 1,
-			SHPC:    true,
-			Addr:    "2",
-		},
-	}
-
-	assert.Equal(expectedOut, devices)
-
 	// Check Q35
-	amd64 = newTestQemu(assert, QemuQ35)
+	amd64 := newTestQemu(assert, QemuQ35)
 
 	amd64.bridges(1)
-	bridges = amd64.getBridges()
+	bridges := amd64.getBridges()
 	assert.Len(bridges, 1)
 
 	devices = []govmmQemu.Device{}
 	devices = amd64.appendBridges(devices)
 	assert.Len(devices, 1)
 
-	expectedOut = []govmmQemu.Device{
+	expectedOut := []govmmQemu.Device{
 		govmmQemu.BridgeDevice{
 			Type:    govmmQemu.PCIBridge,
 			Bus:     defaultBridgeBus,
@@ -240,7 +201,7 @@ func TestQemuAmd64AppendBridges(t *testing.T) {
 func TestQemuAmd64WithInitrd(t *testing.T) {
 	assert := assert.New(t)
 
-	cfg := qemuConfig(QemuPC)
+	cfg := qemuConfig(QemuQ35)
 	cfg.InitrdPath = "dummy-initrd"
 	amd64, err := newQemuArch(cfg)
 	assert.NoError(err)
@@ -282,7 +243,7 @@ func TestQemuAmd64AppendProtectionDevice(t *testing.T) {
 	var devices []govmmQemu.Device
 	assert := assert.New(t)
 
-	amd64 := newTestQemu(assert, QemuPC)
+	amd64 := newTestQemu(assert, QemuQ35)
 
 	id := amd64.(*qemuAmd64).devLoadersCount
 	firmware := "tdvf.fd"

src/runtime/virtcontainers/qemu_arch_base.go

@@ -212,9 +212,6 @@ const (
 	// QemuPCLite is the QEMU pc-lite machine type for amd64
 	QemuPCLite = "pc-lite"
 
-	// QemuPC is the QEMU pc machine type for amd64
-	QemuPC = "pc"
-
 	// QemuQ35 is the QEMU Q35 machine type for amd64
 	QemuQ35 = "q35"
 

src/runtime/virtcontainers/qemu_arch_base_test.go

@@ -28,7 +28,7 @@ const (
 )
 
 var qemuArchBaseMachine = govmmQemu.Machine{
-	Type: "pc",
+	Type: "q35",
 }
 
 var qemuArchBaseQemuPaths = map[string]string{
@@ -143,7 +143,7 @@ func TestQemuAddDeviceToBridge(t *testing.T) {
 
 	// addDeviceToBridge successfully
 	q := newQemuArchBase()
-	q.qemuMachine.Type = QemuPC
+	q.qemuMachine.Type = QemuQ35
 
 	q.bridges(1)
 	for i := uint32(1); i <= types.PCIBridgeMaxCapacity; i++ {
@@ -559,10 +559,6 @@ func TestQemuArchBaseAppendIOMMU(t *testing.T) {
 			CachingMode: true,
 		},
 	}
-	// Test IOMMU is not appended to PC machine type
-	qemuArchBase.qemuMachine.Type = QemuPC
-	devices, err = qemuArchBase.appendIOMMU(devices)
-	assert.Error(err)
 
 	qemuArchBase.qemuMachine.Type = QemuQ35
 	devices, err = qemuArchBase.appendIOMMU(devices)

src/runtime/virtcontainers/qemu_test.go

@@ -362,7 +362,7 @@ func TestQemuQemuPath(t *testing.T) {
 	qemuConfig.HypervisorPath = expectedPath
 	qkvm := &qemuArchBase{
 		qemuMachine: govmmQemu.Machine{
-			Type:    "pc",
+			Type:    "q35",
 			Options: "",
 		},
 		qemuExePath: expectedPath,