From: Filippo Sironi <sironi@amazon.de>
To: Christoph Hellwig <hch@lst.de>
Cc: <serebrin@amazon.com>, <dwmw@amazon.co.uk>, <benh@amazon.com>,
<kbusch@kernel.org>, <axboe@fb.com>, <sagi@grimberg.me>,
<linux-nvme@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] nvme: Add 48-bit DMA address quirk for Amazon NVMe controllers
Date: Wed, 10 Feb 2021 10:13:17 +0100 [thread overview]
Message-ID: <8a375a50-1aad-96c5-2743-f91120fbc6f9@amazon.de> (raw)
In-Reply-To: <20210210073759.GA23269@lst.de>
On 2/10/21 8:37 AM, Christoph Hellwig wrote:
>
> On Wed, Feb 10, 2021 at 01:39:42AM +0100, Filippo Sironi wrote:
>> Amazon NVMe controllers do not support 64-bit DMA addresses; they are
>> limited to 48-bit DMA addresses. Let's add a quirk to ensure that we
>> make use of 48-bit DMA addresses to avoid misbehavior.
>
> This should probably say some, and mention that they do not follow
> the spec. But I can fix this up when applying the patch.
>
Thanks!
Filippo
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879
WARNING: multiple messages have this Message-ID (diff)
From: Filippo Sironi <sironi@amazon.de>
To: Christoph Hellwig <hch@lst.de>
Cc: benh@amazon.com, sagi@grimberg.me, serebrin@amazon.com,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
axboe@fb.com, kbusch@kernel.org, dwmw@amazon.co.uk
Subject: Re: [PATCH v2] nvme: Add 48-bit DMA address quirk for Amazon NVMe controllers
Date: Wed, 10 Feb 2021 10:13:17 +0100 [thread overview]
Message-ID: <8a375a50-1aad-96c5-2743-f91120fbc6f9@amazon.de> (raw)
In-Reply-To: <20210210073759.GA23269@lst.de>
On 2/10/21 8:37 AM, Christoph Hellwig wrote:
>
> On Wed, Feb 10, 2021 at 01:39:42AM +0100, Filippo Sironi wrote:
>> Amazon NVMe controllers do not support 64-bit DMA addresses; they are
>> limited to 48-bit DMA addresses. Let's add a quirk to ensure that we
>> make use of 48-bit DMA addresses to avoid misbehavior.
>
> This should probably say some, and mention that they do not follow
> the spec. But I can fix this up when applying the patch.
>
Thanks!
Filippo
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879
_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-02-10 9:17 UTC|newest]
Thread overview: 20+ 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 9:43 ` Filippo Sironi
2021-02-03 9:51 ` Christoph Hellwig
2021-02-03 9:51 ` Christoph Hellwig
2021-02-03 11:12 ` Filippo Sironi
2021-02-03 11:12 ` Filippo Sironi
2021-02-03 11:15 ` Christoph Hellwig
2021-02-03 11:15 ` Christoph Hellwig
2021-02-03 11:22 ` Filippo Sironi
2021-02-03 11:22 ` Filippo Sironi
2021-02-03 11:26 ` Christoph Hellwig
2021-02-03 11:26 ` Christoph Hellwig
2021-02-03 16:57 ` Keith Busch
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 0:39 ` Filippo Sironi
2021-02-10 7:37 ` Christoph Hellwig
2021-02-10 7:37 ` Christoph Hellwig
2021-02-10 9:13 ` Filippo Sironi [this message]
2021-02-10 9:13 ` Filippo Sironi
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