On Mon, Oct 29, 2007 at 05:06:31PM +0200, Yoav Artzi wrote: > I don't know what befell me. I realized the foolishness of the questions > a second after clicking the send button. > > > Now, I just wonder what will happen when people will need more then > 2^46bytes of memory. Any idea?
The CPU needs to be extended then beyond 48bit VA. (actually it could be extended to 2^46.5 or so) > > Another two issues: > > 1. I see vmalloc() doesn't cover the entire possible space. Why is that? It needs an reserved space for its virtual mappings. > > 2. How come user space gets 47bits and kernel only gets 46bits in direct > mapping? Half of the kernel space is reserved for special purposes (vmalloc, ioremap etc.) That is not fixed and could be varied. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
