linux-kernel - Re: [PATCH 5/5] iommu/sun50i: Invalidate iova at map and unmap

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Message-ID: <3161965.AJdgDx1Vlc@kista>
Date:   Thu, 13 Oct 2022 20:17:36 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     maxime@...no.tech, joro@...tes.org, will@...nel.org,
        robin.murphy@....com, wens@...e.org, samuel@...lland.org
Cc:     iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] iommu/sun50i: Invalidate iova at map and unmap

Dne četrtek, 13. oktober 2022 ob 20:12:20 CEST je Jernej Skrabec napisal(a):
> Mapped and unmapped iova addresses needs to be invalidated immediately
> or otherwise they might or might not work when used by master device.
> 
> This was discovered when running video decoder conformity test with
> Cedrus. Some videos were now and then decoded incorrectly and generated
> page faults.
> 
> Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver")
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...il.com>

Please ignore this patch. It's same as next one, with slightly different commit 
message.