linux-kernel - Re: dma_zalloc_coherent broken with 57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7

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Date:   Tue, 27 Mar 2018 18:45:05 +0200
From:   Christoph Hellwig <hch@....de>
To:     Sebastian Ott <sebott@...ux.vnet.ibm.com>
Cc:     Christoph Hellwig <hch@....de>,
        Jesper Nilsson <jesper.nilsson@...s.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org
Subject: Re: dma_zalloc_coherent broken with
        57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7

On Tue, Mar 27, 2018 at 05:24:10PM +0200, Sebastian Ott wrote:
> What do you mean by current implementations? Arch specific code? At least
> on s390 we don't do that. dma-mapping.h doesn't do it either.

The arch implementations should do it.  Seems like s390 and potentially
a few others don't.  I'm a little slow due to a cast on one arm, but I'll
do an audit and will fix up anything I'll find.