On Fri, May 10, 2019 at 02:12:40PM -0700, Frank Rowand wrote: > However, the reply is incorrect. Kselftest in-kernel tests (which > is the context here) can be configured as built in instead of as > a module, and built in a UML kernel. The UML kernel can boot, > running the in-kernel tests before UML attempts to invoke the > init process. Um, Citation needed? I don't see any evidence for this in the kselftest documentation, nor do I see any evidence of this in the kselftest Makefiles. There exists test modules in the kernel that run before the init scripts run --- but that's not strictly speaking part of kselftests, and do not have any kind of infrastructure. As noted, the kselftests_harness header file fundamentally assumes that you are running test code in userspace. - Ted
