[igt-dev] [PATCH i-g-t 3/3] tools/aubdump: For gen10+ support addresses up to 4GB

[Scott D Phillips]

Jordan Justen <jordan.l.justen at intel.com> writes:

> For gen10, we now add mappings for buffers as they are needed.
>
> Instead of doing this dynamically, we could always map the entire 4GB.
> With 4KB pages, the tables would take up 8MB in every AUB. AUBs are
> often quite huge compared to 8MB, but they can also be just a few
> hundred KB.
>
> This should allow the AUB to create up to about 4GB of allocated
> buffers, whereas before we were limited to about 64MB.
>
> While it is unlikely that we'll try to capture AUBs that generate
> buffers up to 4GB in size, this change also should allow pinned
> buffers to be used anywhere in the first 4GB. (I tested a pinned
> buffer at 0xf0000000.)
>
> Cc: Scott D Phillips <scott.d.phillips at intel.com>
> Cc: Kenneth Graunke <kenneth at whitecape.org>
> Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>

Reviewed-by: Scott D Phillips <scott.d.phillips at intel.com>