Il 24/09/2014 21:47, Alex Williamson ha scritto: > So the opregion is mapped by a config write on the IGD device itself and > the other 3 regions, that we know about so far, are mapped via writes to > the host bridge.
AFAIU the opregion is mapped by the (host) BIOS, that writes the address to a well-known scratch dword in the configuration space. The host reads from the dword and finds the opregion that way. Paolo _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
