From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 13E5DE77184 for ; Thu, 19 Dec 2024 06:34:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Gr2nnRf08BH+7FEnQSZE5n2RoDYnI28xYSQNeQVE/3w=; b=4tszvnA/iuPdTCP2Xz9caP4v/p 0HtZLax4IpzLBgBB0sQHqvu0m+VTBfyLuo3285/7gphcIRO0QyPeNcPIOXyPT5wCPfypialUsF1dF c/Qmx7gnT4eWhZ5eGwno0zi0k4nyjHxO5APhIGNBUYTc41eFt0jc2nyLR7fUMdQxh188qUtv47WAQ zHRfH6kksd+T0iHdUkUWHxmy8wc8K4neO8Be48Trbd61aDf2/sP5yyy8i2b0a59HdSk0iTaI8AyFx w4BZ+HH4ksc9x7QD98rcWU1jtJyUrC6vCJKTzvI/wcJtuUltCfDs7fl7xFoOOvOlJXFnezhfBjsH0 GP0Mvv6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tOA73-00000000z1d-0XUW; Thu, 19 Dec 2024 06:34:21 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tOA3m-00000000yJv-144L for linux-nvme@lists.infradead.org; Thu, 19 Dec 2024 06:30:59 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id C555B68BFE; Thu, 19 Dec 2024 07:30:52 +0100 (CET) Date: Thu, 19 Dec 2024 07:30:52 +0100 From: Christoph Hellwig To: Manivannan Sadhasivam Cc: "Rafael J. Wysocki" , Christoph Hellwig , Ulf Hansson , "Rafael J. Wysocki" , Bjorn Helgaas , kbusch@kernel.org, axboe@kernel.dk, sagi@grimberg.me, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, andersson@kernel.org, konradybcio@kernel.org, Len Brown , linux-pm@vger.kernel.org Subject: Re: [PATCH] nvme-pci: Shutdown the device if D3Cold is allowed by the user Message-ID: <20241219063052.GA20003@lst.de> References: <20241212055920.GB4825@lst.de> <13662231.uLZWGnKmhe@rjwysocki.net> <20241212151354.GA7708@lst.de> <20241214063023.4tdvjbqd2lrylb7o@thinkpad> <20241216171108.6ssulem3276rkycb@thinkpad> <20241216175210.mnc5kp6646sq7vzm@thinkpad> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241216175210.mnc5kp6646sq7vzm@thinkpad> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241218_223058_430576_42E1DE6C X-CRM114-Status: GOOD ( 13.14 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org 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).