Re: [PATCH v2 4/6] drm/panfrost: Add support for AARCH64_4K page table format

[AngeloGioacchino Del Regno]

Il 14/03/25 18:38, Ariel D'Alessandro ha scritto:
> Currently, Panfrost only supports MMU configuration in "LEGACY" (as
> Bifrost calls it) mode, a (modified) version of LPAE "Large Physical
> Address Extension", which in Linux we've called "mali_lpae".
>
> This commit adds support for conditionally enabling AARCH64_4K page
> table format. To achieve that, a "GPU optional quirks" field was added
> to `struct panfrost_features` with the related flag.
>
> Note that, in order to enable AARCH64_4K mode, the GPU variant must have
> the HW_FEATURE_AARCH64_MMU feature flag present.
>
> Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@xxxxxxxxxxxxx>

I would've preferred the LEGACY format to be a quirk, instead of AARCH64, but
okay.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>