File: spec-conformance.md

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# Spec conformance

This branch of runc implements the [OCI Runtime Spec v1.2.1](https://github.com/opencontainers/runtime-spec/tree/v1.2.1)
for the `linux` platform.

The following features are not implemented yet:

Spec version | Feature                                        | PR
-------------|------------------------------------------------|----------------------------------------------------------
v1.1.0       | `SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV`       | [#3862](https://github.com/opencontainers/runc/pull/3862)

## Architectures

The following architectures are supported:

runc binary  | seccomp
-------------|-------------------------------------------------------
`amd64`      | `SCMP_ARCH_X86`, `SCMP_ARCH_X86_64`, `SCMP_ARCH_X32`
`arm64`      | `SCMP_ARCH_ARM`, `SCMP_ARCH_AARCH64`
`armel`      | `SCMP_ARCH_ARM`
`armhf`      | `SCMP_ARCH_ARM`
`ppc64le`    | `SCMP_ARCH_PPC64LE`
`riscv64`    | `SCMP_ARCH_RISCV64`
`s390x`      | `SCMP_ARCH_S390`, `SCMP_ARCH_S390X`

The runc binary might be compilable for i386, big-endian PPC64,
and several MIPS variants too, but these architectures are not officially supported.