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Date:   Wed, 3 Feb 2021 10:51:48 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Filippo Sironi <sironi@amazon.de>
Cc:     serebrin@amazon.com, dwmw@amazon.co.uk, kbusch@kernel.org,
        axboe@fb.com, hch@lst.de, sagi@grimberg.me,
        linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] nvme: Add 48-bit DMA address quirk
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References: <20210203094338.19473-1-sironi@amazon.de>
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On Wed, Feb 03, 2021 at 10:43:38AM +0100, Filippo Sironi wrote:
> Certain NVMe controllers don't support 64-bit DMA addresses.  Instead,
> they are limited to 48-bit DMA addresses.  Let's add a quirk to use them
> properly.

WTF?  This is such a grave NVMe spec compiance bug that I do not think
we should support this buggy mess in Linux.