2014/1/24 Will Deacon <will.dea...@arm.com>: > Are you sure about this? The value we write is actually task_pid_nr, which I > believe to be globally unique.
You are right: the task_pid_nr is unique in the system. However when using namespaces, the so called "PID" is the virtual number that processes in different namespaces can share. This PID is the one visible by user-space tasks, in particular user-space tracers and debuggers. These programs would expect to find the PID of the traced process in the Context ID reg, while it is not. I think it is better to remove confusion by making PID_IN_CONTEXTIDR and PID_NS incompatible. What do you think? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
