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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2324EECAAA1 for ; Mon, 5 Sep 2022 05:50:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235900AbiIEFuM (ORCPT ); Mon, 5 Sep 2022 01:50:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234698AbiIEFuG (ORCPT ); Mon, 5 Sep 2022 01:50:06 -0400 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F34813E83 for ; Sun, 4 Sep 2022 22:50:02 -0700 (PDT) Received: by verein.lst.de (Postfix, from userid 2407) id B2ECB68AFE; Mon, 5 Sep 2022 07:49:58 +0200 (CEST) Date: Mon, 5 Sep 2022 07:49:58 +0200 From: "hch@lst.de" To: Sungup Moon Cc: "kbusch@kernel.org" , "axboe@fb.com" , "hch@lst.de" , "sagi@grimberg.me" , "linux-nvme@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v2] drivers/nvme/host: Fix namespace duplication check rule Message-ID: <20220905054958.GA1069@lst.de> References: <20220901004941epcms2p4e5e1c53484889619f050a02d8e671eca@epcms2p4> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220901004941epcms2p4e5e1c53484889619f050a02d8e671eca@epcms2p4> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 01, 2022 at 09:49:41AM +0900, Sungup Moon wrote: > Some NVMe device, use EUI64 and NGUID, has fixed value EUI64 on a > sub-system because of the bit size of ID. Huh? Fixed value of a EUI64 is brokem, so we must warn and ignore those. The whole point of the EUI64/NGUID/UUID is that they are uniqueu per namespace.