[igt-dev] [PATCH i-g-t 3/7] lib/rendercopy: Set the upper 32bits of surface base address on gen8+

[Chris Wilson]

Quoting Ville Syrjala (2018-07-04 17:16:42)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> gen8 introduces 48 bit virtual addresses. Set both dwords correctly
> as otherwise the presumed_offset will not match what we actually
> have stored in the surface state if the buffer is located somewhere
> above 4GiB.
> 
> I guess we're not currently using 48bit addresses with rendercopy?

If you don't ask for 48b, you don't get 48b.
-Chris