On 10/06/2012 10:57 AM, Andi Kleen wrote: > > Maybe it's just me, but that's somehow sad for one if() and a su > btraction > > BTW __pa used to be a simple subtraction, the if () was just added to > handle the few call sites for x86-64 that do __pa(&text_symbol). > Maybe we should just go back to the old __pa_symbol() for those cases, > then __pa could be the simple subtraction it used to was again > and it could be inlined and everyone would be happy. > I wonder how much the double-mapping actually buys us, if we could get a PIE-type memory model that doesn't try to create GOT references. We would unambiguously lose out the cases where we currently can do symbol(index) but I wonder how much the impact actually is. The advantage would be that it would give us way more room to do kernel space ASR. -hpa _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
