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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49254C4707F for ; Thu, 27 May 2021 11:40:46 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 01F0E61355 for ; Thu, 27 May 2021 11:40:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 01F0E61355 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EKpaOBVWG10888w9jDUzZDHw9E7asqD5o0Qdu8YuDgE=; b=nqeAsclPZTQjpE gRawMqk9Q6OBkIZx6cbnrvILjs6BrMdBr/OyHA/2LM67pxT7VkvCCcEoFeNPPOVyf0A/xVOx8phdy jKvEIZPgp1OMQQepvIxcsbAB4Uygo8d2zDL7Tgovm0vNikNOHxyQ51UUpDVsTiU0WhqHffW7zXi0s 0kbfHxiJmtr4ClXLaDgyPRRaDpvg/DNHQ6OZ7YamP7gPmIcX0SKtFISHktnLRrMLI9UtUadvKgCsO 0FsVXtJeeOgdXC7tqFKnI7KtkITj4KGunMVRPf9d7eb2BbBQFhiJKLIkvD+Qr816uoSm7I41cS/Fo ZdMGx7BnvPIciVvM293Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lmENQ-005N8N-15; Thu, 27 May 2021 11:40:36 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lmENN-005N68-2C for linux-nvme@lists.infradead.org; Thu, 27 May 2021 11:40:34 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id D266468AFE; Thu, 27 May 2021 13:40:29 +0200 (CEST) Date: Thu, 27 May 2021 13:40:29 +0200 From: Christoph Hellwig To: Kai-Heng Feng Cc: Bjorn Helgaas , Christoph Hellwig , Keith Busch , Koba Ko , Jens Axboe , Sagi Grimberg , linux-nvme , Linux Kernel Mailing List , Henrik Juul Hansen , Bjorn Helgaas , Linux PCI Subject: Re: [PATCH] nvme-pci: Avoid to go into d3cold if device can't use npss. Message-ID: <20210527114029.GC17266@lst.de> References: <20210526150633.GA1291513@bjorn-Precision-5520> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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-20210527_044033_291947_F8481E1F X-CRM114-Status: GOOD ( 12.76 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, May 27, 2021 at 12:24:06AM +0800, Kai-Heng Feng wrote: > Yes, that's exactly what they said. Because Windows Modern Standby > always keep the NVMe at D0, so D3hot is untested by the vendors. So all the problems we've deal with latetly are that platforms cut the power off. So it is not kept always at D0 which would be the right thing, but moved into D3cold. Which makes this patch to disable D3cold rather counterintuitive. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme