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runc/docs/spec-conformance.md
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Akihiro Suda 653161f6d8 docs/spec-conformance.md: update for spec v1.3.0
ref: opencontainers/runtime-spec PR 1302

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
2025-11-12 20:15:54 +11:00

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# Spec conformance
This branch of runc implements the [OCI Runtime Spec v1.3.0](https://github.com/opencontainers/runtime-spec/tree/v1.3.0)
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)
v1.3.0 | Clarified interpretation of `linux.intelRdt` | [#3832](https://github.com/opencontainers/runc/pull/3832)
v1.3.0 | Fail on a failure of a poststart hook. | [#4348](https://github.com/opencontainers/runc/pull/4348)
## 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`
`loong64` | `SCMP_ARCH_LOONGARCH64`
The runc binary might be compilable for i386, big-endian PPC64,
and several MIPS variants too, but these architectures are not officially supported.