search for: xen_ident_map_isa

Hi, I am bit confused about the do_update_va_mapping call that dom0 makes in xen_ident_map_ISA() to map ffff8800000a0000 to mfn a0. The mfn belongs to DOMID_IO. Before the mfn is mapped, the l1 entry is not empty: 0000000139d08500: 00100001380a0027 After the mapping: 0000000139d08500: 00100000000a0467 as expected. However, the mfn 1380a0 still seems to belong to dom0. Shouldn''...

Hi Ingo, Here''s the chunk of patches to add Xen Dom0 support (it''s probably worth creating a new xen/dom0 topic branch for it). A dom0 Xen domain is basically the same as a normal domU domain, but it has extra privileges to directly access hardware. There are two issues to deal with: - translating to and from the domain''s pseudo-physical addresses and real machine