On 12/14/2012 12:14 PM, Yinghai Lu wrote: > On Fri, Dec 14, 2012 at 12:08 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: >> On Fri, Dec 14, 2012 at 12:04 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: >>> On Fri, Dec 14, 2012 at 11:46 AM, H. Peter Anvin <hpa@xxxxxxxxx> wrote: >>>> >>>> I suspect we don't need init_level4_pgt at all and should just plan to >>>> get rid of it. Is there any reason we can't just build the proper >>>> kernel page table set in pagetable_init() and switch to it there? >>> >>> then how to pass the info to AP? >> >> also we should merge early_level4_pgt with init_level4_pgt. >> >> and #PE handler could just extend to use BRK ... >> >> but need to make sure BRK get mapped at first, and BRK could cross the >> 1G, 512G boundary ... >> >> that could make things less impact to all. > > your current switchover setup in arch/x86/kernel/head_64.S could > handle above 512g and cross boundary? > Yes, that's the purpose of the funny aliasing games I play there. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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