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 07A6AC3ABAB for ; Tue, 29 Apr 2025 14:13:37 +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=RfGirvq3Z4ov8T9sFHKLNvN85Dwpz08FqY7lI54ZqBc=; b=mvp2Hug0EqKHkpSTQR7GIZQ++G IuobB5D2HgcXxh/g1WccIv1NEIozbJqP3gcf2NQAbaGAAf6PCEzMtuxADlOlEqk3ULW5SXxrMdImj SBcHk1HyOk8k+87xE/ump1BO11iFqV7VY1BYFtj8/08422MxEhjMfWzA5kB//lnnCtew717PZlGoz GwF82y5muHxsUne2G6lTXM+NHZ4ksq3NSB6fmZK+h1mu03ewaUExL6WRlVjffwLih6dSGrL7DN5Gx +KtDz3i43O+sGJhsAHuFMAOC9473/c0IVXP64X2/fcSzQCVv2XQVZDE1393dPtDcRgUFUhl9nRu/O PrpZB17w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9liJ-00000009shq-0IQa; Tue, 29 Apr 2025 14:13:35 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9kW3-00000009haZ-2fKq for linux-nvme@lists.infradead.org; Tue, 29 Apr 2025 12:56:52 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 4E69A68B05; Tue, 29 Apr 2025 14:56:48 +0200 (CEST) Date: Tue, 29 Apr 2025 14:56:48 +0200 From: Christoph Hellwig To: Niklas Cassel Cc: Wilfred Mallawa , linux-nvme@lists.infradead.org, Keith Busch , Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni , dlemoal@kernel.org, alistair.francis@wdc.com, Wilfred Mallawa Subject: Re: [PATCH 0/5] pci: nvmet: support completion queue sharing by multiple submission queues Message-ID: <20250429125648.GB13574@lst.de> References: <20250424051352.7980-2-wilfred.opensource@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii 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-20250429_055651_811508_AB1627B7 X-CRM114-Status: GOOD ( 13.48 ) 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 Thu, Apr 24, 2025 at 03:16:54PM +0200, Niklas Cassel wrote: > Perhaps it is a bit too harsh to say that we are non-spec compliant. It is not too harsh but simply a true statement. If the spec compliance matters or not might be a different question. > We don't implement every feature in the NVMe spec in the Linux drivers > on purpose, because there is a lot of feature creep in NVMe. That is a valid point for optional features. Sharing a CQ for multiple SQs is a mandatory feature in PCIe. This should also get us to the point of running verification test suite on the PCIe nvmet code, which I'm really looking forward to.