From: hch@infradead.org (Christoph Hellwig)
Subject: [PATCH v3] nvme: add quirk to force medium priority for SQ creation
Date: Tue, 8 May 2018 21:40:14 -0700 [thread overview]
Message-ID: <20180509044014.GA10650@infradead.org> (raw)
In-Reply-To: <672a97be-7fbf-b21e-9f75-2c18e64ccf8f@kernel.dk>
On Tue, May 08, 2018@10:25:15AM -0600, Jens Axboe wrote:
> Some P3100 drives have a bug where they think WRRU (weighted round
> robin) is always enabled, even though the host doesn't set it. Since
> they think it's enabled, they also look at the submission queue
> creation priority. We used to set that to MEDIUM by default,
> but that was removed in commit 81c1cd98351b. This causes various
> issues on that drive. Add a quick to still set MEDIUM priority
> for that controller.
And this really isn't something that could be fixed with a trivial
firmware uptodate? I'd really hate to pile on hacks like this if we
can somehow avoid it.
next prev parent reply other threads:[~2018-05-09 4:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-08 16:25 [PATCH v3] nvme: add quirk to force medium priority for SQ creation Jens Axboe
2018-05-08 16:35 ` Keith Busch
2018-05-11 17:02 ` Keith Busch
2018-05-11 21:05 ` Jens Axboe
[not found] ` <4feb7a21-14b1-be61-a88e-8c7841fae96c@huawei.com>
2018-05-15 15:23 ` Question about stream number Jens Axboe
2018-05-09 4:40 ` Christoph Hellwig [this message]
2018-05-09 14:05 ` [PATCH v3] nvme: add quirk to force medium priority for SQ creation Keith Busch
2018-05-09 14:16 ` Jens Axboe
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