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=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 DB2BCC433ED for ; Thu, 8 Apr 2021 16:47:24 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 70688610D1 for ; Thu, 8 Apr 2021 16:47:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 70688610D1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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=desiato.20200630; 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=/FY9fB/QrfZYxHf/FtHjplkeMJxqyw6Xd7driv8YNeI=; b=jXR6/aBVOu3HpSK/Hy/ReDxzL yysphv3enVB0ItIJuYEXjQ6ake/DxDetIL0LOjQRwIr0TyI1DhB/Y3Eijqk3vjRG3TvN3TV5XogVh ji5VLWKaS6K8jQI3OPQ4fsbjdoMfVZ3OILhdcWf7MVXGrIVRCi2Kt9jo+hCorYqricj38q3wyhZuF 6oCbigWrB84WAIm5YyUnF95bmJR1AxbnhrvUcwH7/vnqObDAbpJ3dOBs+Gb911w4r28PplbHOjuz5 KbT3jEhjxgV55Bz3dg1ugNsXTrcSzTbrERJJckA4y1Klaes/Eu3AivICq59skV215Kd+rs0Vtw7U5 s+WbgAn7w==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lUXoC-008g6v-HA; Thu, 08 Apr 2021 16:47:08 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lUXnx-008g4n-SL for linux-nvme@lists.infradead.org; Thu, 08 Apr 2021 16:46:56 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2E228610D1; Thu, 8 Apr 2021 16:46:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617900412; bh=jQD8OgVB2CA/DKZIlztRGKpj1cjD5D4UlxdzlzYHeCY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=HbRfttNm/7H7NF3KSYWhc4hfxXvmVyP2aN+KF1GcfRmYwSimDkCHucBUsttopqJQT Ur+/YUJ34BtbuGTp5Q4Wyn8MgBMIQl5S6AILyvSulvFUbL4WUGKvzlrZJHiU20Vd41 vgaZLABEo0DC0ylc16DbTZ+ludJImWOJ5YAwxFNoUjUY3F3Y9srU0yeVeqJwnQ0pw6 fyI48QZ/JA0205Ryu/4B7cawkxj3KXEfRGDWVql8nXfFqIJO0hVmKUuXjGjx4MypCN eZMi27LPLUe9OH0Q/zOTs2Ls9FjSlj1AIss+796s+os3DtxGvZq8wVFxGMlS4CPRFe Nps7VYhCSp1Aw== Date: Fri, 9 Apr 2021 01:46:45 +0900 From: Keith Busch To: Padmakar Kalghatgi Cc: Chaitanya.Kulkarni@wdc.com, linux-nvme@lists.infradead.org, tasleson@redhat.com, tbzatek@redhat.com, prakash.v@samsung.com, d.palani@samsung.com, javier.gonz@samsung.com, k.jensen@samsung.com, mohit.kap@samsung.com, krish.reddy@samsung.com Subject: Re: libnvme questions Message-ID: <20210408164645.GA3667@redsun51.ssa.fujisawa.hgst.com> References: <20210312161824.GA3953@redsun51.ssa.fujisawa.hgst.com> <20210407123806.23253-1-p.kalghatgi@samsung.com> <20210407233706.GB32309@redsun51.ssa.fujisawa.hgst.com> <20210408075126.GC12847@test-zns> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210408075126.GC12847@test-zns> User-Agent: Mutt/1.12.1 (2019-06-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_174654_601143_8B197D74 X-CRM114-Status: GOOD ( 11.91 ) 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, Apr 08, 2021 at 01:21:26PM +0530, Padmakar Kalghatgi wrote: > On Thu, Apr 08, 2021 at 08:37:06AM +0900, Keith Busch wrote: > > On Wed, Apr 07, 2021 at 06:08:06PM +0530, Padmakar Kalghatgi wrote: > > > Since most of the companies who develop SSDs, use MI(sideband) channel, we think this will be a good enhancement to the existing functionality which the nvme-cli provides. > > > > Can we even use this from a Linux host? I thought the sideband channel > > was typically connected to the baseboard management controller. > > > Yes, this can be used from Linux host by having additional hardwares, like TotalPhase's aardvark, Corelis etc, which are connected to the NVMe device. That doesn't sound something for end users, but okay. Can we see the nvme-mi bus driver before considering tools and emulation? _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme