[PATCH v5 3/5] iommu/io-pgtable: Add DART subpage protection support

[Rob Herring]

On Fri, Sep 16, 2022 at 4:43 AM Janne Grunau <j at jannau.net> wrote:
>
> From: Sven Peter <sven at svenpeter.dev>
>
> DART allows to only expose a subpage to the device. While this is an
> optional feature on the M1 DARTs the new ones present on the Pro/Max
> models require this field in every PTE.
>
> Signed-off-by: Sven Peter <sven at svenpeter.dev>
> Signed-off-by: Janne Grunau <j at jannau.net>
>
> ---
>
> (no changes since v3)
>
> Changes in v3:
> - apply change to io-pgtable-dart.c
>
>  drivers/iommu/io-pgtable-dart.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Reviewed-by: Rob Herring <robh at kernel.org>