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2011 Jun 27
9
Is there a way to map pv guest pseudo physical address into dom0?
Hi, all I''m reading the code of QEMU''s virtio infrastructure (hw/virtio.c) and Linux''s virtio driver (virtio_blk.c, virtio_net.c). Virtio drivers utilize scatter gather infrastructure in the Linux kernel. It stores the physical addresses in scatter list. In Xen''s hvm case, QEMU can access guest address space with cpu_physical_memory_map. However, in