-mm maintainer? WAS Re: [PATCH v6 0/8] Emulated coherent graphics memory take 2

[Thomas HellstrÃm (VMware)]

Hi, All,

On 10/14/19 3:22 PM, Thomas HellstrÃm (VMware) wrote:
> From: Thomas HellstrÃm <thellstrom@xxxxxxxxxx>
>
> Graphics APIs like OpenGL 4.4 and Vulkan require the graphics driver
> to provide coherent graphics memory, meaning that the GPU sees any
> content written to the coherent memory on the next GPU operation that
> touches that memory, and the CPU sees any content written by the GPU
> to that memory immediately after any fence object trailing the GPU
> operation is signaled.
>
> Paravirtual drivers that otherwise require explicit synchronization
> needs to do this by hooking up dirty tracking to pagefault handlers
> and buffer object validation.
>
> Provide mm helpers needed for this and that also allow for huge pmd-
> and pud entries (patch 1-3), and the associated vmwgfx code (patch 4-7).
>
> The code has been tested and exercised by a tailored version of mesa
> where we disable all explicit synchronization and assume graphics memory
> is coherent. The performance loss varies of course; a typical number is
> around 5%.
>
> I would like to merge this code through the DRM tree, so an ack to include
> the new mm helpers in that merge would be greatly appreciated.

I'm a bit confused as how to get this merged? Is there an -mm maintainer 
or who is supposed to ack -mm patches and get them into the kernel?

Any input appreciated,

Thanks,

Thomas