search for: sl2mfn

Dear All: I am pretty new to xen-devel, please correct me in the following. Assume we have the following terms GPT: guest page table SPT: shadow page table (Question a) When guest OS is running, is it always using SPT for address translation? If it is the case, how does guest OS refer and modify its own GPT content? It seems that there is a page table entry in SPT for the GPT page. (Question

...a & ~PAGE_MASK) / sizeof(l1_pgentry_t)] = mk_l1_pgentry(spte); + spl1e[(pa & ~PAGE_MASK) / sizeof(l1_pgentry_t)] = spte; } -void shadow_l2_normal_pt_update(unsigned long pa, unsigned long gpde) +void shadow_l2_normal_pt_update(unsigned long pa, l2_pgentry_t gpde) { - unsigned long sl2mfn, spde = 0; - l2_pgentry_t *spl2e; + unsigned long sl2mfn; + l2_pgentry_t *spl2e, spde = mk_l2_pgentry(0); unsigned long sl1mfn; /* N.B. To get here, we know the l2 page *must* be shadowed. */ - SH_VVLOG("shadow_l2_normal_pt_update pa=%p, gpde=%p",pa,gpde); + SH_...