linux-kernel - Re: [PATCH] iommu/io-pgtable-dart: Only set subpage protection disable for DART 1

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Message-Id: <d6f24197-7f2b-4c12-9014-94e31a9aa6aa@app.fastmail.com>
Date: Wed, 19 Feb 2025 16:39:34 +0100
From: "Sven Peter" <sven@...npeter.dev>
To: "Sasha Finkelstein" <fnkl.kernel@...il.com>,
 "Alyssa Rosenzweig" <alyssa@...enzweig.io>, "Joerg Roedel" <joro@...tes.org>,
 "Will Deacon" <will@...nel.org>, "Robin Murphy" <robin.murphy@....com>,
 "Hector Martin" <marcan@...can.st>, "Rob Herring" <robh@...nel.org>,
 "Janne Grunau" <j@...nau.net>
Cc: "Joerg Roedel" <jroedel@...e.de>, asahi@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
 linux-kernel@...r.kernel.org, "Asahi Lina" <lina@...hilina.net>
Subject: Re: [PATCH] iommu/io-pgtable-dart: Only set subpage protection disable for
 DART 1



On Wed, Feb 19, 2025, at 10:13, Sasha Finkelstein via B4 Relay wrote:
> From: Asahi Lina <lina@...hilina.net>
>
> Subpage protection can't be disabled on t6000-style darts,
> as such the disable flag no longer applies, and probably
> even affects something else.
>
> Fixes: dc09fe1c5edd ("iommu/io-pgtable-dart: Add DART PTE support for t6000")
> Signed-off-by: Asahi Lina <lina@...hilina.net>
> Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
> ---

Reviewed-by: Sven Peter <sven@...npeter.dev>


Thanks,


Sven