From: Christoph Hellwig <hch@lst.de>
To: Jongpil Jung <jongpuls@gmail.com>
Cc: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
gloria.tsai@ssstc.com, jongpil19.jung@samsung.com,
jongheony.kim@samsung.com, dj54.sohn@samsung.com
Subject: Re: [PATCH V3 1/1] nvme: Add quirk for LiteON CL1 devices running FW 220TQ,22001
Date: Wed, 28 Oct 2020 18:17:26 +0100 [thread overview]
Message-ID: <20201028171726.GA9897@lst.de> (raw)
In-Reply-To: <20201028091421.GA667673@image-900X5T-900X5U>
On Wed, Oct 28, 2020 at 06:14:21PM +0900, Jongpil Jung wrote:
> LiteON(SSSTC) CL1 device running FW 220TQ,22001 has bugs with simple
> suspend.
>
> When NVMe device receive D3hot from host, NVMe firmware will do
> garbage collection. While NVMe device do Garbage collection,
> firmware has chance to going incorrect address.
I'm still lost on what this means. The device doesn't receive 'D3hot'
from the host, it receives a shutdown request. And we don't just do
that when hibernating, but also when doing an actual shutdown, a suspend
to disk, unbinding the driver, etc. So if the device has a problem
with shutdowns we really are in trouble.
next prev parent reply other threads:[~2020-10-28 22:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 9:14 [PATCH V3 1/1] nvme: Add quirk for LiteON CL1 devices running FW 220TQ,22001 Jongpil Jung
2020-10-28 17:17 ` Christoph Hellwig [this message]
2020-10-29 2:20 ` Gloria Tsai
2020-10-29 2:33 ` Keith Busch
2020-10-29 3:15 ` Keith Busch
2020-10-29 3:21 ` Gloria Tsai
2020-10-29 14:55 ` Christoph Hellwig
2020-11-02 18:13 ` Christoph Hellwig
2020-11-03 2:21 ` Gloria Tsai
2020-11-03 9:23 ` Christoph Hellwig
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