On Fri, Aug 17, 2012 at 08:06:07AM +0100, Arnd Bergmann wrote: > Sorry for the dumb question, but why do you even need PTRACE_GET_THREAD_AREA > for 64 bit tasks? I thought the thread pointer is a GPR, or is this just > for compat tasks?
The TLS is stored in a co-processor register which is read-only for userspace. However, it's banked, so accessing the TLS of your child (the guy you're ptracing) requires a system call. Will -- 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/
