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gpu: Cold Plug VFIO toml setting

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Added the cold_plug_vfio setting to the qemu-toml.in with some
epxlanation

Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>
This commit is contained in:
Zvonko Kaiser 2023-04-27 09:59:47 +00:00
parent f7ad75cb12
commit 138ada049c
2 changed files with 14 additions and 2 deletions
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5
src/runtime/config/configuration-qemu.toml.in
View File

@ -352,6 +352,11 @@ pflashes = []
# Default false
#hotplug_vfio_on_root_bus = true
# In a confidential compute environment hot-plugging can compromise
# security. Enable cold-plugging of VFIO devices to a root-port.
# The default setting is "no-port", which means disabled.
#cold_plug_vfio = "root-port"
# Before hot plugging a PCIe device, you need to add a pcie_root_port device.
# Use this parameter when using some large PCI bar devices, such as Nvidia GPU
# The value means the number of pcie_root_port

11
src/runtime/pkg/katautils/config_test.go
View File

@ -19,6 +19,7 @@ import (
"testing"
"github.com/kata-containers/kata-containers/src/runtime/pkg/govmm"
hv "github.com/kata-containers/kata-containers/src/runtime/pkg/hypervisors"
ktu "github.com/kata-containers/kata-containers/src/runtime/pkg/katatestutils"
"github.com/kata-containers/kata-containers/src/runtime/pkg/oci"
vc "github.com/kata-containers/kata-containers/src/runtime/virtcontainers"
@ -70,7 +71,7 @@ func createAllRuntimeConfigFiles(dir, hypervisor string) (config testRuntimeConf
if hypervisor == "" {
return config, fmt.Errorf("BUG: need hypervisor")
}
var coldPlugVFIO hv.PCIePort
hypervisorPath := path.Join(dir, "hypervisor")
kernelPath := path.Join(dir, "kernel")
kernelParams := "foo=bar xyz"
@ -85,6 +86,7 @@ func createAllRuntimeConfigFiles(dir, hypervisor string) (config testRuntimeConf
enableIOThreads := true
hotplugVFIOOnRootBus := true
pcieRootPort := uint32(2)
coldPlugVFIO = hv.RootPort
disableNewNetNs := false
sharedFS := "virtio-9p"
virtioFSdaemon := path.Join(dir, "virtiofsd")
@ -107,6 +109,7 @@ func createAllRuntimeConfigFiles(dir, hypervisor string) (config testRuntimeConf
EnableIOThreads: enableIOThreads,
HotplugVFIOOnRootBus: hotplugVFIOOnRootBus,
PCIeRootPort: pcieRootPort,
ColdPlugVFIO: coldPlugVFIO,
DisableNewNetNs: disableNewNetNs,
DefaultVCPUCount: defaultVCPUCount,
DefaultMaxVCPUCount: defaultMaxVCPUCount,
@ -170,6 +173,7 @@ func createAllRuntimeConfigFiles(dir, hypervisor string) (config testRuntimeConf
EnableIOThreads: enableIOThreads,
HotplugVFIOOnRootBus: hotplugVFIOOnRootBus,
PCIeRootPort: pcieRootPort,
ColdPlugVFIO: coldPlugVFIO,
Msize9p: defaultMsize9p,
MemSlots: defaultMemSlots,
EntropySource: defaultEntropySource,
@ -564,6 +568,7 @@ func TestMinimalRuntimeConfig(t *testing.T) {
VirtioFSCache: defaultVirtioFSCacheMode,
BlockDeviceAIO: defaultBlockDeviceAIO,
DisableGuestSeLinux: defaultDisableGuestSeLinux,
ColdPlugVFIO: defaultColdPlugVFIO,
}
expectedAgentConfig := vc.KataAgentConfig{
@ -597,7 +602,7 @@ func TestMinimalRuntimeConfig(t *testing.T) {
func TestNewQemuHypervisorConfig(t *testing.T) {
dir := t.TempDir()
var coldPlugVFIO hv.PCIePort
hypervisorPath := path.Join(dir, "hypervisor")
kernelPath := path.Join(dir, "kernel")
imagePath := path.Join(dir, "image")
@ -606,6 +611,7 @@ func TestNewQemuHypervisorConfig(t *testing.T) {
enableIOThreads := true
hotplugVFIOOnRootBus := true
pcieRootPort := uint32(2)
coldPlugVFIO = hv.RootPort
orgVHostVSockDevicePath := utils.VHostVSockDevicePath
blockDeviceAIO := "io_uring"
defer func() {
@ -625,6 +631,7 @@ func TestNewQemuHypervisorConfig(t *testing.T) {
EnableIOThreads: enableIOThreads,
HotplugVFIOOnRootBus: hotplugVFIOOnRootBus,
PCIeRootPort: pcieRootPort,
ColdPlugVFIO: coldPlugVFIO,
RxRateLimiterMaxRate: rxRateLimiterMaxRate,
TxRateLimiterMaxRate: txRateLimiterMaxRate,
SharedFS: "virtio-fs",