LGTM!

I'll approve to run the CI, but don’t forget to sign off your commit!

There are two questions:

1. We might also need to update the documentation regarding the supported architectures:
   https://github.com/zhaixiaojuan/runc/blob/be0377ce139f0a406d3d0f472d5c1b1f7e625053/docs/spec-conformance.md?plain=1#L14
2. Relatedly, have you actually tested this support on a LoongArch64 (loong64) machine?

2. Relatedly, have you actually tested this support on a LoongArch64 (loong64) machine?

For LoongArch, since there is no Ubuntu system, we tested it on the Debian system and it can be used normally. Debian upstream has already released runc package: http://ftp.ports.debian.org/debian-ports/pool-loong64/main/r/runc/

Here are links for submitting LoongArch runc patches to Debian upstream:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1069166
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1095452

LoongArch runc packages have also been released for OpenEuler and Anolis systems:
https://repo.openeuler.org/openEuler-24.03-LTS/OS/loongarch64/Packages/
https://mirrors.openanolis.cn/anolis/23.2/os/loongarch64/os/Packages/

@lifubang
Hi, I checked the test failures for "test (ubuntu-24.04, 1.25.x, criu-dev)" and it seems to be unrelated to the modified code.

Hi,

I noticed that the following patch appears to be missing from the release:v1.4.0

• Add loong64 support in seccomp and PIE #4938

It seems that this patch was referenced or intended to be included, but it does not appear in the v1.4.0 build or commit history.
Could you confirm whether this was intentionally excluded or if it was accidentally omitted?

Thanks.

I think we should add a 1.4.x milestone to this PR; otherwise, it won’t be included in any release.

Could you please open a backport PR against the release-1.4 branch? If not, I’ll go ahead and create one when I get a chance.