Vault Support on IBM Platforms

Seeking information about Hashicorp vault agent support on 3 distinct IBM hardware platforms.
First platform is RedHat Linux on IBM hardware (S390X) architecture; where consumers need secrets management for

  1. Podman/K8S containers running natively
  2. Containers running within Openshift (OCP) under z/Linux

Second platform is a unix guest running under legacy IBM Mainframe z/OS. Unix guest is referred to as Unix System Services.

Where do i find out if and when hashicorp vault-agent will run on these specific platform/environments?

Thank you!