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Date:   Thu, 11 Apr 2019 10:23:40 +0200
From:   Simon Horman <>
To:     Geert Uytterhoeven <>
Cc:     Joerg Roedel <>,
        Magnus Damm <>,
        Laurent Pinchart <>,,,
Subject: Re: [PATCH v2 2/6] iommu/ipmmu-vmsa: Prepare to handle 40-bit error

On Wed, Apr 03, 2019 at 08:21:44PM +0200, Geert Uytterhoeven wrote:
> On R-Car Gen3, the faulting virtual address is a 40-bit address, and
> comprised of two registers.  Read the upper address part, and combine
> both parts, when running on a 64-bit system.
> Signed-off-by: Geert Uytterhoeven <>
> ---
> Apart from this, the driver doesn't support 40-bit IOVA addresses yet.

None the less this seems like progress.

Reviewed-by: Simon Horman <>

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