Younes Manton

Fix JIT System.nanoTime() in checkpoint mode

10

The attached patches 1. Fix the x86 codegen's `System.nanoTime()` implementation to do the right thing in checkpoint mode 2. Disable the Z codegen's implementation in checkpoint mode until it can...

Allow CRIU to be used as non-root (Take 2)

4

We at the OpenJ9 and Open Liberty projects have been experimenting with CRIU to improve JVM and Java web application start-up times, primarily in container deployments.[^1] To that end we've...

compel: Fix ppc64le memory corruption near stack

1

I've been seeing intermittent crashes on ppc64le, tracked back to incorrect parasite stack setup. The ppc64le ABI allows functions to write to their caller's stack frame, so we have to...

pipe: Fall back to write() on vmsplice() EPERM

7

vmsplice can be blocked via seccomp and currently is in Podman containers. CRIU uses vmsplice a lot on the checkpoint side, so it's easier to just run with `seccomp=unconfined` in...

See https://github.com/OpenLiberty/ci.docker/issues/540#issuecomment-2115235532 for details. The problem is caused by the `/proc//systemcfg` file, which we don't require. We should avoid mapping it in checkpoint mode to make life easier for users.

Show the console.log if the `server start` commands in populate_scc.sh fail, otherwise any useful error messages are going to probably be lost.