On 06/25/2013 12:03 PM, Yinghai Lu wrote: >> It is worth experimenting with but the big question would be, >> if it still avoids the very expensive "memmap_init_zone" and >> it's sub-functions using huge expanses of memory. I'll do some >> experimenting as soon as I can. Our 32TB system is being >> brought back to 16TB (we found a number of problems as we >> get closer and closer to the 64TB limit), but that's still >> a significant size. > > According to Intel SDM, CPU could support 52bits physical addressing. > > So how linux kernel will handle it? as we only have 48bits virtual addressing. > The Linux kernel will not support more than V-2 bits of physical address space for any number V of virtual address bits. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
