[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] about: XENMEM_machphys_mfn_list
Lin.Yu wrote: XENMEM_machphys_mfn_list command is used to acquire the mapping between the pseudo-physical to machine. And the hypercall will fill in the struct xen_machphys_mfn_list.I do not understand "This table is an array of pseudo-physical frame numbers of the start of 2MB extents, corresponding to 2MB rangs in the pseudo-physical address space"."This table" means the array pointed by xen_machphys_mfn_list.extent_start. I am reading the code about this struct, still in confusion. :-) Who can help me? AFAIU, here "table" is nothing more than an array of xen_pfn_ts. Only complication is, mfns returned are `base-mfns' for 2MB memory regions.For example, if mfn 100 is returned, it means mfns 100-612 hold the 2MB region (612 = 100 + 512; 512 pages make 2MB) -- bvk-chaitanya _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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