Andi Kleen píše v Čt 14. 05. 2009 v 16:02 +0200: > > Sorry, this doesn't work, because the function is inlined. And even if > > it wasn't, the vDSO must be self-contained by definition. User-space > > cannot simply call into kernel-space. > > Wrong, it can call into vsyscall space. Ah, yes, you're right. The vsyscall is always mapped and it is a special case for the instruction replacement code already. So, is there any reason not to put the rdtsc_barrier() around vget_cycles() in vread_tsc() ? Petr Tesarik -- To unsubscribe from this list: send the line "unsubscribe linux-x86_64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
