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Date:   Fri, 3 May 2019 16:26:17 +0200
From:   Heiko Carstens <>
To:     Arnd Bergmann <>
Cc:     Martin Schwidefsky <>,,
        Nick Desaulniers <>,
        Nathan Chancellor <>,,
        Masahiro Yamada <>,
        Vasily Gorbik <>,
        Philipp Rudo <>,
        Tony Krowiak <>,
        Ursula Braun <>,
Subject: Re: [PATCH v2 3/4] s390: drop CONFIG_VIRT_TO_BUS

On Mon, Apr 15, 2019 at 10:35:53AM +0200, Arnd Bergmann wrote:
> VIRT_TO_BUS is only used for legacy device PCI and ISA drivers using
> virt_to_bus() instead of the streaming DMA mapping API, and the
> remaining drivers generally don't work on 64-bit architectures.
> Two of these drivers also cause a build warning on s390, so instead
> of trying to fix that, let's just disable the option as we do on
> most architectures now.
> Signed-off-by: Arnd Bergmann <>
> ---
>  arch/s390/Kconfig | 1 -
>  1 file changed, 1 deletion(-)

Applied, thanks.

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