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clh: runtime: add disable_image_nvdimm support

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Allow users to build using DEFDISABLEIMAGENVDIMM=true if they want to
set disable_image_nvdimm=true in configuration-clh.toml.

disable_image_nvdimm=false is the default config value.

Also, use virtio-blk instead of nvdimm if disable_image_nvdimm=true in
configuration-clh.toml.

Signed-off-by: Dan Mihai <dmihai@microsoft.com>
This commit is contained in:
Dan Mihai 2025-06-10 00:12:19 +00:00
parent 0dd9325264
commit 1aeef52bae
3 changed files with 12 additions and 2 deletions
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6
src/runtime/config/configuration-clh.toml.in
View File

@ -220,6 +220,12 @@ block_device_driver = "virtio-blk"
# Default 1
#hypervisor_loglevel = 1
# If false and nvdimm is supported, use nvdimm device to plug guest image.
# Otherwise virtio-block device is used.
#
# nvdimm is not supported when `confidential_guest = true`.
disable_image_nvdimm = @DEFDISABLEIMAGENVDIMM@
# Enable hot-plugging of VFIO devices to a root-port.
# The default setting is "no-port"
#hot_plug_vfio = "root-port"

1
src/runtime/pkg/katautils/config.go
View File

@ -1095,6 +1095,7 @@ func newClhHypervisorConfig(h hypervisor) (vc.HypervisorConfig, error) {
BlockDeviceCacheDirect: h.BlockDeviceCacheDirect,
EnableIOThreads: h.EnableIOThreads,
Msize9p: h.msize9p(),
DisableImageNvdimm: h.DisableImageNvdimm,
ColdPlugVFIO: h.coldPlugVFIO(),
HotPlugVFIO: h.hotPlugVFIO(),
PCIeRootPort: h.pcieRootPort(),

7
src/runtime/virtcontainers/clh.go
View File

@ -570,7 +570,10 @@ func (clh *cloudHypervisor) CreateVM(ctx context.Context, id string, network Net
// Set initial amount of cpu's for the virtual machine
clh.vmconfig.Cpus = chclient.NewCpusConfig(int32(clh.config.NumVCPUs()), int32(clh.config.DefaultMaxVCPUs))
params, err := getNonUserDefinedKernelParams(hypervisorConfig.RootfsType, clh.config.ConfidentialGuest, !clh.config.ConfidentialGuest, clh.config.Debug, clh.config.ConfidentialGuest, clh.config.IOMMU)
disableNvdimm := (clh.config.DisableImageNvdimm || clh.config.ConfidentialGuest)
enableDax := !disableNvdimm
params, err := getNonUserDefinedKernelParams(hypervisorConfig.RootfsType, disableNvdimm, enableDax, clh.config.Debug, clh.config.ConfidentialGuest, clh.config.IOMMU)
if err != nil {
return err
}
@ -590,7 +593,7 @@ func (clh *cloudHypervisor) CreateVM(ctx context.Context, id string, network Net
}
if assetType == types.ImageAsset {
if clh.config.ConfidentialGuest {
if clh.config.DisableImageNvdimm || clh.config.ConfidentialGuest {
disk := chclient.NewDiskConfig(assetPath)
disk.SetReadonly(true)