linux-kernel - Re: [PATCH] nvme-pci: Shutdown the device if D3Cold is allowed by the user

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Message-ID: <20241219063052.GA20003@lst.de>
Date: Thu, 19 Dec 2024 07:30:52 +0100
From: Christoph Hellwig <hch@....de>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>, Christoph Hellwig <hch@....de>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Bjorn Helgaas <helgaas@...nel.org>, kbusch@...nel.org,
	axboe@...nel.dk, sagi@...mberg.me, linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	andersson@...nel.org, konradybcio@...nel.org,
	Len Brown <len.brown@...el.com>, linux-pm@...r.kernel.org
Subject: Re: [PATCH] nvme-pci: Shutdown the device if D3Cold is allowed by
 the user

On Mon, Dec 16, 2024 at 11:22:10PM +0530, Manivannan Sadhasivam wrote:
> > So what technically is the problem?
> > 
> 
> NVMe wear out is the problem.

Btw, it's not just the PE cycles, it's also the sheer time a clean
shutdown can take (or the time for an unclean enable if we don't wait
long enough).