search for: map_foreign

As you know, HVM save/restore broke recently because restored config miss guest memsize that used by xc_hvm_restore to locate some pfn. After discussion, we decided to remove the pfn deduction logic from restore side by adding a general memory layout. I have a patch for it. But then qemu broke, because it also require the memsize to locate the share page. We can''t use the previous

...ERROR("Max batch size exceeded. Giving up."); + goto out; + } + + if (!read_exact(io_fd, region_pfn_type, j*sizeof(unsigned long))) { + ERROR("Error when reading region pfn types"); + goto out; + } + + region_base = xc_map_foreign_batch( + xc_handle, dom, PROT_WRITE, region_pfn_type, j); + + for ( i = 0; i < j; i++ ) + { + void *page; + + pfn = region_pfn_type[i]; + if ( pfn > max_pfn ) + { + ERROR("pfn out of range"); +...