From: kbusch@kernel.org (Keith Busch)
Subject: [PATCH] drivers/nvme: save/restore HMB on suspend/resume
Date: Tue, 30 Jul 2019 14:48:29 -0600 [thread overview]
Message-ID: <20190730204829.GI13948@localhost.localdomain> (raw)
In-Reply-To: <362aad7f1cf547c2a73e1c4f564984db@AUSX13MPS303.AMER.DELL.COM>
On Tue, Jul 30, 2019@08:09:15PM +0000, Charles.Hyde@dellteam.com wrote:
> LiteOn CL1 devices allocate host memory buffer at initialization.
> This patch saves and restores the host memory buffer allocation
> for any NVMe device which has HMB. Devices which have on-board
> memory buffers are not impacted. This patch has been tested locally
> with the following devices: LiteOn CL1 and CA3, Hynix BC511 and
> PC601, WDC SN520 and SN720. This patch has also been tested by
> our partners at Wistron and Compal.
Please explain why you're doing this rather than what you're doing. We
previously concluded that NVMe power states have no spec defined impact
on HMB, so changing driver behavior requires justification.
next prev parent reply other threads:[~2019-07-30 20:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 20:09 [PATCH] drivers/nvme: save/restore HMB on suspend/resume Charles.Hyde
2019-07-30 20:48 ` Keith Busch [this message]
2019-07-30 20:59 ` Charles.Hyde
2019-07-30 21:10 ` Keith Busch
2019-07-30 21:32 ` Charles.Hyde
2019-07-30 21:34 ` Keith Busch
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