Re: [PATCH v12 06/22] gpu: nova-core: Blackwell: use correct sysmem flush registers

[Eliot Courtney]

On Tue Jun 2, 2026 at 12:20 PM JST, John Hubbard wrote:
> Blackwell GPUs moved the sysmem flush page registers away from the
> Ampere/Ada location. GB10x routes the flush through a pair of HSHUB0
> register sets (primary and egress) that must both be programmed to
> the same address. GB20x routes it through FBHUB0.
>
> Define these registers relative to their HSHUB0 and FBHUB0 bases, as
> Open RM does, and implement the flush paths in the GB10x and GB20x
> framebuffer HALs.
>
> Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
> ---

This patch looks correct so:

Reviewed-by: Eliot Courtney <ecourtney@xxxxxxxxxx>

But it only updates the sysmem flush stuff for Blackwell. It looks like
Hopper also uses different registers, so I think we should update it
too (separate patch seems ok to me).