From: Christoph Hellwig <hch@lst.de>
To: Filippo Sironi <sironi@amazon.de>
Cc: sagi@grimberg.me, serebrin@amazon.com,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
axboe@fb.com, kbusch@kernel.org, hch@lst.de, dwmw@amazon.co.uk
Subject: Re: [PATCH] nvme: Add 48-bit DMA address quirk
Date: Wed, 3 Feb 2021 10:51:48 +0100 [thread overview]
Message-ID: <20210203095148.GA8897@lst.de> (raw)
In-Reply-To: <20210203094338.19473-1-sironi@amazon.de>
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.
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next prev parent reply other threads:[~2021-02-03 9:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 9:43 [PATCH] nvme: Add 48-bit DMA address quirk Filippo Sironi
2021-02-03 9:51 ` Christoph Hellwig [this message]
2021-02-03 11:12 ` Filippo Sironi
2021-02-03 11:15 ` Christoph Hellwig
2021-02-03 11:22 ` Filippo Sironi
2021-02-03 11:26 ` Christoph Hellwig
2021-02-03 16:57 ` Keith Busch
2021-02-10 0:39 ` [PATCH v2] nvme: Add 48-bit DMA address quirk for Amazon NVMe controllers Filippo Sironi
2021-02-10 7:37 ` Christoph Hellwig
2021-02-10 9:13 ` Filippo Sironi
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