For the jdk:java/foreign tests we often have to check if java.lang.foreign.Linker is supported on the current platform. This is currently done with a complex @requires expression in the test definitions:

@requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64" | os.arch == "riscv64"

It seems useful to replace this with a dedicated property in VMProps.java