linux-kernel - Re: [PATCH] iommu/rockchip: Fix PAGE_DESC_HI

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Message-ID: <YZ5pm2kFM41OOu+Y@8bytes.org>
Date:   Wed, 24 Nov 2021 17:34:35 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     Alex Bee <knaerzche@...il.com>
Cc:     Will Deacon <will@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/rockchip: Fix PAGE_DESC_HI_MASKs for RK3568

On Wed, Nov 24, 2021 at 03:13:25AM +0100, Alex Bee wrote:
> With the submission of iommu driver for RK3568 a subtle bug was
> introduced: PAGE_DESC_HI_MASK1 and PAGE_DESC_HI_MASK2 have to be
> the other way arround - that leads to random errors, especially when
> addresses beyond 32 bit are used.
> 
> Fix it.
> 
> Fixes: c55356c534aa ("iommu: rockchip: Add support for iommu v2")
> Signed-off-by: Alex Bee <knaerzche@...il.com>

Applied for v5.16, thanks.