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References: <20220916094152.87137-1-j@jannau.net> <20220916094152.87137-4-j@jannau.net>
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From: Rob Herring <robh@kernel.org>
Date: Fri, 16 Sep 2022 06:57:26 -0500
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Subject: Re: [PATCH v5 3/5] iommu/io-pgtable: Add DART subpage protection support
To: Janne Grunau <j@jannau.net>
Cc: iommu@lists.linux.dev, Konrad Dybcio <konrad.dybcio@somainline.org>, 
	asahi@lists.linux.dev, Sven Peter <sven@svenpeter.dev>, 
	Alyssa Rosenzweig <alyssa@rosenzweig.io>, Hector Martin <marcan@marcan.st>, Joerg Roedel <joro@8bytes.org>, 
	Will Deacon <will@kernel.org>, Linux IOMMU <iommu@lists.linux-foundation.org>, 
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, 
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"

On Fri, Sep 16, 2022 at 4:43 AM Janne Grunau <j@jannau.net> wrote:
>
> From: Sven Peter <sven@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@svenpeter.dev>
> Signed-off-by: Janne Grunau <j@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@kernel.org>