Commit Graph

579 Commits

Author SHA1 Message Date
Fabiano Fidêncio
0a73638744 runtime: add configurable kubelet root dir
Different kubernetes distributions, such as k0s, use a different kubelet
root dir location instead of the default /var/lib/kubelet, so ConfigMap
and Secret volume propagation were failing.

This adds a kubelet_root_dir config option that the go runtime uses when
matching volume paths and kata-deploy now sets it automatically for k0s
via a drop-in file.

runtime-rs does not need this option: it identifies ConfigMap/Secret,
projected, and downward-api volumes by volume-type path segment
(kubernetes.io~configmap, etc.), not by kubelet root prefix.

Signed-off-by: Fabiano Fidêncio <ffidencio@nvidia.com>
2026-02-27 14:10:57 +01:00
Steve Horsman
3442fc7d07 Merge pull request #12477 from kata-containers/workflow-improvements
workflow: Recommended improvements
2026-02-27 11:57:22 +00:00
Hyounggyu Choi
be5ae7d1e1 Merge pull request #12573 from BbolroC/support-memory-hotplug-go-runtime-s390x
runtime: Support memory hotplug via virtio-mem on s390x
2026-02-27 09:59:40 +01:00
Hyounggyu Choi
b9f3d5aa67 runtime: Support memory hotplug with virtio-mem on s390x
This commit adds logic to properly handle memory hotplug
for QemuCCWVirtio in the ExecMemdevAdd() path.

The new logic is triggered only when virtio-mem is enabled.

Signed-off-by: Hyounggyu Choi <Hyounggyu.Choi@ibm.com>
2026-02-26 14:21:34 +01:00
stevenhorsman
1b2ca678e5 runtime: Fix identifier names
Fix identifiers that are non compliant with go's conventions
e.g. not capitalising initialisations

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
e86338c9c0 runtime: Remove explicit types in variable declarations
QF1011 - use the short declaration as the type can be inferred

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
f60ee411f0 runtime: Update poorly chosen Duration names
ST1011 - having time.Duration values with variable names of MS/Secs
is misleading

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
a0ccb63f47 runtime: Use ReplaceAll over Replace
strings.ReplaceAll was introduced in Go 1.12 as a more readable and self-documenting way to say "replace everything".

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
a78d212dfc kata-monitor: Switch to switch statements
Resolve: `QF1003: could use tagged switch`

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
6f438bfb19 runtime: Improve receiver name
Update from `this` to fix:
```
ST1006: receiver name should be a reflection of its identity; don't use generic names such as "this" or "self" (staticcheck)
```

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
f1960103d1 runtime: Improve split statement
strings.SplitN(s, sep, -1) is functionally identical to strings.Split(s, sep)
as -1 says to return all substrings, so choose the more concise version

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
8cd3aa8c84 runtime: Remove embedded field from selector
GenericDevice is an embedded (anonymous) field in the device struct, so its fields
and methods are "promoted" to the outer struct, so we go straight to it.

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
4351a61f67 runtime: Fix error string formatting
Resolve `ST1005: error strings should not end with punctuation or newlines (staticcheck)`

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
312567a137 runtime: Fix double imports
Remove one of the double imports to tidy up the code

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:33:04 +00:00
stevenhorsman
cff8994336 runtime: Switch to switch statements
Resolve: `QF1003: could use tagged switch on major (staticcheck)`
Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 14:22:10 +00:00
stevenhorsman
5ca4c34a34 kata-monitor: Fix golangci-lint warning
QF1012: Use fmt.Fprintf(...) instead of Write([]byte(fmt.Sprintf(...))) (staticcheck)
Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-24 10:02:48 +00:00
Balint Tobik
295a6a81d0 runtime: refactor hypervisor devices cgroup creation
Separatly added hypervisor devices to cgroup to
omit not relevant warnings and fail if none of them
are available.
Also fix a testcase reload removed kernel modules to later testcases
and skip some tests on ARM because lack of virtualization support
Fixes #6656

Signed-off-by: Balint Tobik <btobik@redhat.com>
2026-02-13 09:23:08 +01:00
stevenhorsman
c5aadada98 workflows: Pin all actions
Previously zizmor only mandated pinning of third-party actions,
but has recommended rolling this out to all actions now.

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2026-02-12 16:26:45 +00:00
Konstantin Khlebnikov
5d99a141d9 runtime: add hypervisor options for NUMA topology
With enable_numa=true hypervisor will expose host NUMA topology as is:
map vm NUMA nodes to host 1:1 and bind vpus to relates CPUS.

Option "numa_mapping" allows to redefine NUMA nodes mapping:
- map each vm node to particular host node or several numa nodes
- emulate numa on host without numa (useful for tests)

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Co-authored-by: Zvonko Kaiser <zkaiser@nvidia.com>
2026-02-09 20:09:25 +01:00
Manuel Huber
7958be8634 runtime: Make kernel_verity_params overwritable
Similar to the kernel_params annotation, add a
kernel_verity_params annotation and add logic to make these
parameters overwritable. For instance, this can be used in test
logic to provide bogus dm-verity hashes for negative tests.

Signed-off-by: Manuel Huber <manuelh@nvidia.com>
2026-02-05 23:04:35 +01:00
Manuel Huber
f639c3fa17 runtime: Enable kernelinit dm-verity variant
This change introduces the kernel_verity_parameters knob to the
Go based shim, picking up dm-verity information in a new config
field (the corresponding build variable is already produced by
the shim build). The change extends the shim to parse dm-verity
information from this parameter and to construct the kernel command
line appropriately, based on the indicated initramfs or kernelinit
build variant.

Signed-off-by: Manuel Huber <manuelh@nvidia.com>
2026-02-05 23:04:35 +01:00
Pradipta Banerjee
8a449d358f shim: Add CRI-O annotation support for device cold plug
Add support for CRI-O annotations when fetching pod identifiers for
device cold plug. The code now checks containerd CRI annotations first,
then falls back to CRI-O annotations if they are empty.

This enables device cold plug to work with both containerd and CRI-O
container runtimes.

Annotations supported:
- containerd: io.kubernetes.cri.sandbox-name, io.kubernetes.cri.sandbox-namespace
- CRI-O: io.kubernetes.cri-o.KubeName, io.kubernetes.cri-o.Namespace

Signed-off-by: Pradipta Banerjee <pradipta.banerjee@gmail.com>
2026-02-03 04:51:15 +00:00
LandonTClipp
b50a73912d runtime: Config test extension for IOMMUFDID
Adding additional cases for the IOMMUFDID method to check for
non-IOMMUFD paths are passed. The method should do the right
thing.

Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
2025-12-10 15:46:28 +01:00
LandonTClipp
d5e4cf6b4d runtime: Add test for ExecuteVFIODeviceAdd
Copilot made a good point that we should have a test for this.
Thus, this commit.

Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
2025-12-10 15:46:28 +01:00
LandonTClipp
137866f793 runtime: Allow QMP commands to be logged in debug level
Logging the QMP commands gives us a lot of flexibility to
troubleshoot issues with what is being sent to QEMU.

Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
2025-12-10 15:46:28 +01:00
LandonTClipp
a3b5764f67 runtime: Fix import cycle and add unit test for IOMMUFDID()
An import cycle was introduced because of a mutual need
for the constant that describes the prefix of IOMMUFD files.
We need to extract this out into a higher-level package.

Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
2025-12-10 15:46:28 +01:00
LandonTClipp
09438fd54f runtime: Add IOMMUFD Object Creation for QEMU QMP Commands
The QMP commands sent to QEMU did not properly set up
IOMMUFD objects in the codepath that handles VFIO device
hot-plugging. This is mainly relevant in the Kubernetes
use-case where the VFIO devices are not available when
QEMU is first launched.

Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
2025-12-10 15:46:28 +01:00
Zvonko Kaiser
f8ad17499d gpu: VFIO handling container vs sandbox
If the sandbox has cold-plugged a IOMMUFD device but the
device-plugins sends us a /dev/vfio/<NUM> device we need to
check if the IOMMUFD device and the  VFIO device are the same
We have the sibling.BDF we now need to extract the BDF of the
devPath that is either /dev/vfio/<NUM> or /dev/vfio/devices/vfio<NUM>

Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
2025-12-05 16:53:31 +01:00
Fabiano Fidêncio
5ca4f2b9ff runtimes: annotations: Fix kernel param handling
We need to ensure that we do not blindly append nor blindly override the
kernel parameters set by default, but rather modify the values in case
they exist, and append in case they do not.

Now we're actually making golang and rust runtime behave the same, as so
far they were behaving differently, each version wrong in its own way.
:-p.

Signed-off-by: Fabiano Fidêncio <ffidencio@nvidia.com>
2025-11-25 16:04:52 +01:00
Joji Mekkattuparamban
5aa184925a shim: Support device cold plug with Kubernetes
Utilize Kubelet's Pod Resource API to determine device allocations
for the Pod during sandbox creation. Use CDI files to translate the device
IDs to corresponding device paths and perform device injection.

Fixes #12009

Signed-off-by: Joji Mekkattuparamban <jojim@nvidia.com>
2025-11-20 10:58:55 +01:00
zhangchen.kidd
fea954df7a runtime: qemu: qmp: Add iothread args for QMP ExecutePCIDeviceAdd
Qemu already support the device_add with iothread args.
Make KATA have ability to hotplug PCI device with IOThreads.
Currently, just support QEMU as the hypervisor, not sure it
works for stratovirt.

Signed-off-by: zhangchen.kidd <zhangchen.kidd@jd.com>
2025-11-17 15:55:03 +08:00
zhangchen.kidd
c3d3684f81 runtime: Introduce independent IOThreads framework
Introduce independent IOThread framework for Kata container.

What is the indep_iothreads:
This new feature introduce a way to pre-alloc IOThreads
for QEMU hypervisor (maybe other hypervisor can support too).
Independent IOThreads enables IO to be processed in a separate thread.
To generally improve the performance of each module, avoid them
running in the QEMU main loop.

Why need indep_iothreads:
In Kata container implementation, many devices based on hotplug
mechanism. The real workload container may not sync the same
lifecycle with the VM. It may require to hotplug/unplug new disks
or other devices without destroying the VM. So we can keep the
IOThread with the VM as a IOThread pool(some devices need multi iothreads
for performance like virtio-blk vq-mapping), the hotplug devices
can attach/detach with the IOThread according to business needs.
At the same time, QEMU also support the "x-blockdev-set-iothread"
to change iothreads(but it need stop VM for data secure).
Current QEMU have many devices support iothread, virtio-blk,
virtio-scsi, virtio-balloon, monitor, colo-compare...etc...

How it works:
Add new item in hypervisor struct named "indep_iothreads" in toml.
The default value is 0, it reused the original "enable_iothreads" as
the switch. If the "indep_iothreads" != 0 and "enable_iothreads" = true
it will add qmp object -iothread indepIOThreadsPrefix_No when VM startup.
The first user is the virtio-blk, it will attach the indep_iothread_0
as default when enable iothread for virtio-blk.

Thanks
Chen

Signed-off-by: zhangchen.kidd <zhangchen.kidd@jd.com>
2025-11-17 15:55:01 +08:00
Manuel Huber
1561d7fbba runtime: Clear outer CDI annotations
Pod annotations from the outer runtime are being used for cold-plugging
CDI devices. We need to ensure that these annotations don't leak into
the inner runtime for which specific container (sibling) annotations
are being created. Without this change, the inner runtime receives both
annotations, leading to failing CDI injection as an outer runtime
annotation observed in the guest translates to an unresolvable CDI
device, for example, cdi.k8s.io/gpu: "nvidia.com/pgpu=0".

Signed-off-by: Manuel Huber <manuelh@nvidia.com>
2025-11-04 23:18:00 +01:00
Kevin Zhao
af919686ab Kata-deploy: Add CCA firmware build support
runtime: pass firmware to CCA Realm

Signed-off-by: Kevin Zhao <kevin.zhao@linaro.org>
2025-10-16 17:24:45 +08:00
Kevin Zhao
bfa7f2486d runtime: Add Arm64 CCA confidential Guest Support
This commit add the support for Arm CCA/RME support in golang runtime.
The guest kernel is support since Linux 6.13.

The host kernel which Kata is running is picked from: https://gitlab.arm.com/linux-arm/linux-cca
branch: cca-host/v8 which is currently very stable and reviewed for a while, and it is
expecting to merged this year.

The Qemu support is picked up from: https://git.codelinaro.org/linaro/dcap/qemu.git, branch: cca/2025-05-28,
The Qemu support will be merged to upstream after the CCA host support official support in linux kernel.

More info regarding the CCA software stack dev and test, please refer to link:
https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/Building+an+RME+stack+for+QEMU

Signed-off-by: Kevin Zhao <kevin.zhao@linaro.org>
2025-10-16 17:23:54 +08:00
Sergei Puzyrev
62b12953c7 runtime: fix "num-queues expects uint64" error with virtio-blk
Unneeded type-conversion was removed.

Fixes #11887

Signed-off-by: Sergei Puzyrev <spuzirev@gmail.com>
2025-10-08 17:09:22 -05:00
Mikko Ylinen
6f45a7f937 runtime: config: allow TDX QGS port=0
85f3391bc added the support for TDX QGS port=0 but missed
defaultQgsPort in the default config. defaultQgsPort overrides
user provided tdx_quote_generation_service_socket_port=0.

After this change, defaultQgsPort is not needed anymore since
there's no default: any positive integer is OK and negative or
unset value becomes a parse error.

QEMUTDXQUOTEGENERATIONSERVICESOCKETPORT in the Makefile is used
to provide a sane default when tdx_quote_generation_service_socket_port
gets set in the configuration.

Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>
2025-09-30 09:47:05 +02:00
Aurélien Bombo
433e59de1f gha: zizmor: fix "workflow or action definition without a name" error
This fixes that error everywhere by adding a `name:` field to all jobs that
were missing it. We keep the same name as the job ID to ensure no
disturbance to the required job names.

Signed-off-by: Aurélien Bombo <abombo@microsoft.com>
2025-09-25 23:34:40 -05:00
Saul Paredes
252d4486f1 runtime: delete initdata annotation
Delete annotation from OCI spec and sandbox config. This is done after the optional initdata annotation value has been read.

Signed-off-by: Saul Paredes <saulparedes@microsoft.com>
2025-09-15 11:34:26 -07:00
stevenhorsman
16dd1de0ab kata-monitor: Update deprecated use of grpc functions
In google.golang.org/grpc v1.72.0, `DialContext`, is deprecated, so
switch to use `NewClient` instead.
`grpc.WithBlock()` is deprecated and not recommend, so remove this

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2025-09-15 14:29:06 +01:00
stevenhorsman
b9ff5ffc21 kata-monitor: Replace use of deprecated expfmt.FmtText
In `github.com/prometheus/common v0.62.0` expfmt.FmtText
is deprecated, so replace with `expfmt.NewFormat(expfmt.TypeTextPlain)`.

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2025-09-15 14:29:06 +01:00
stevenhorsman
7f86b967d1 runtime: Replace use of deprecated expfmt.FmtText
In `github.com/prometheus/common v0.62.0` expfmt.FmtText
is deprecated, so replace with `expfmt.NewFormat(expfmt.TypeTextPlain)`.

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2025-09-15 14:29:06 +01:00
Fabiano Fidêncio
08d2ba1969 cgroups: Fix "." parent cgroup special case
ef642fe890 added a special case to avoid
moving cgroups that are on the "default" slice in case of deletion.

However, this special check should be done in the Parent() method
instead, which ensures that the default resource controller ID is
returned, instead of ".".

Fixes: #11599

Signed-off-by: Fabiano Fidêncio <fidencio@northflank.com>
2025-08-27 08:15:15 +02:00
Fabiano Fidêncio
fd1b8ceed1 runtime: qemu: Add reclaim_guest_freed_memory [BACKPORT]
Similar to what we've done for Cloud Hypervisor in the commit
9f76467cb7, we're backporting a runtime-rs
feature that would be benificial to have as part of the go runtime.

This allows users to use virito-balloon for the hypervisor to reclaim
memory freed by the guest.

Signed-off-by: Fabiano Fidêncio <fidencio@northflank.com>
2025-08-22 23:56:47 +02:00
stevenhorsman
8cbb1a4357 runtime: Fix non constant Errorf formatting
As part of the go 1.24.6 bump there are errors about the incorrect
use of a errorf, so switch to the non-formatting version, or add
the format string as appropriate

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2025-08-22 10:44:15 +02:00
Hyounggyu Choi
93ec470928 runtime/tests: Update annotation for initdata
Let's rename the runtime-rs initdata annotation from
`io.katacontainers.config.runtime.cc_init_data` to
`io.katacontainers.config.hypervisor.cc_init_data`.

Rationale:
- initdata itself is a hypervisor-specific feature
- the new name aligns with the annotation handling logic:
c92bb1aa88/src/libs/kata-types/src/annotations/mod.rs (L514-L968)

This commit updates the annotation for go-runtime and tests accordingly.

Signed-off-by: Hyounggyu Choi <Hyounggyu.Choi@ibm.com>
2025-08-19 15:17:01 +02:00
Paul Meyer
5635410dd3 runtime: make SNP guest policy configurable
Dependening on the platform configuration, users might want to
set a more secure policy than the QEMU default.

Signed-off-by: Paul Meyer <katexochen0@gmail.com>
2025-08-13 09:06:36 +02:00
Christophe de Dinechin
ec480dc438 qemu: Respect the JSON schema for hot plug
When hot-plugging CPUs on QEMU, we send a QMP command with JSON
arguments. QEMU 9.2 recently became more strict[1] enforcing the
JSON schema for QMP parameters. As a result, running Kata Containers
with QEMU 9.2 results in a message complaining that the core-id
parameter is expected to be an integer:

```
qmp hotplug cpu, cpuID=cpu-0 socketID=1, error:
QMP command failed:
Invalid parameter type for 'core-id', expected: integer
```

Fix that by changing the core-id, socket-id and thread-id to be
integer values.

[1]: be93fd5372

Fixes: #11633

Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
2025-08-07 09:13:57 +02:00
Fabiano Fidêncio
17ce44083c runtime: Remove reference to sev package
Otherwise it'll just break static checks.

Signed-off-by: Fabiano Fidêncio <fidencio@northflank.com>
2025-07-18 12:49:54 +02:00
Arvind Kumar
ecac3d2d28 runtime: Removing runtime logic for SEV
Removing runtime SEV functionality,
such as the kbs, ovmf, VMSA handling,
and SEV configs as part of deprecating
SEV from kata.

Co-authored-by: Adithya Krishnan Kannan <AdithyaKrishnan.Kannan@amd.com>
Signed-off-by: Arvind Kumar <arvinkum@amd.com>
2025-07-07 11:17:32 -05:00