linux-kernel - Re: [PATCH 1/1] s390/cio: fix virtio-ccw DMA without PV

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Message-Id: <20190930173234.5251bcb8.pasic@linux.ibm.com>
Date:   Mon, 30 Sep 2019 17:32:34 +0200
From:   Halil Pasic <pasic@...ux.ibm.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        Robin Murphy <robin.murphy@....com>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Cornelia Huck <cohuck@...hat.com>,
        Janosch Frank <frankja@...ux.ibm.com>
Subject: Re: [PATCH 1/1] s390/cio: fix virtio-ccw DMA without PV

On Mon, 30 Sep 2019 16:56:07 +0200
Christoph Hellwig <hch@....de> wrote:

> The code looks fine, but I still very much disagree with the workaround
> comments.  The different mask for allocations vs streaming mappings is
> exactly how the DMA API is intended to work.

Thanks for having a look! I already changed this but messed up the
amend with git :( I will send out a v2 shortly.

Regards,
Halil