[PATCH] drm/mgag200: Fix caching setup for remapped video memory

[Jocelyn Falempe]

Hi,

On 05/01/2024 09:25, Thomas Zimmermann wrote:
> I/O video memory for the framebuffer supports write-combine caching
> mode. Simplify the driver's code that sets up the caching mode.
> 
>   * Map video memory with ioremap_wc(), which automatically sets up
> the PAT entry with write-combine caching.
> 
>   * Remove the now obsolete call to devm_arch_io_reserve_memtype_wc().
> It is only required to mmap the video memory to user space, which the
> driver doesn't do.
> 
>   * According to the PAT documentation, arch_phys_wc_add() is best
> called after remapping I/O memory, so move it after ioremap.
> 

Thanks a lot for taking some time to look at the latency issue.
This looks good to me.

Reviewed-by: Jocelyn Falempe <jfalempe at redhat.com>

-- 

Jocelyn