On Sun, 2013-09-22 at 14:39 +1000, Benjamin Herrenschmidt wrote: > How do you do your per-cpu on x86 ? On powerpc we struggle because we > try to dedicate a register (r13) to this PACA (the per-cpu offset hangs > off it), but we constantly run into issues where gcc copies r13 to > another register and then indexes off that, even accross > preempt_enable/disable sections, or worst such as saving/restoring from > the stack. We can't seem to get the compiler to treat it appropriately > as volatile.
Also, do you have a half-decent way of getting to per-cpu from asm ? Cheers, Ben. -- 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/
