[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: 64bit xen relocation
On 11/9/08 11:49, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote: > One question is, why are 0-1M frames also copied to high end > which are then clobbered immediately? It looks like unnecessary > if just for leaving a guard range from stray pointers... > > move_memory(e, 0, __pa(&_end) - xen_phys_start); > > /* Poison low 1MB to detect stray pointers to physical 0-1MB. */ > memset(maddr_to_bootstrap_virt(e), 0x55, 1U<<20); Sure. I suppose it makes the move_memory() arguments a bit simpler than they'd be if we started at 0x100000. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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