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 5AF6BC433FE for ; Tue, 10 May 2022 05:49:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236804AbiEJFxK (ORCPT ); Tue, 10 May 2022 01:53:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232053AbiEJFxE (ORCPT ); Tue, 10 May 2022 01:53:04 -0400 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 548B82B09EE for ; Mon, 9 May 2022 22:49:08 -0700 (PDT) Received: by verein.lst.de (Postfix, from userid 2407) id 5617168AFE; Tue, 10 May 2022 07:49:04 +0200 (CEST) Date: Tue, 10 May 2022 07:49:04 +0200 From: Christoph Hellwig To: zhenwei pi Cc: kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, axboe@fb.com, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] nvme: introduce bit 5 of smart critical warning Message-ID: <20220510054904.GA10460@lst.de> References: <20220507065026.260306-1-pizhenwei@bytedance.com> <20220507065026.260306-2-pizhenwei@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220507065026.260306-2-pizhenwei@bytedance.com> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 07, 2022 at 02:50:24PM +0800, zhenwei pi wrote: > According to NVM Express v1.4, Section 5.14.1.2 ("SMART / Health > Information"), introduce bit 5 for "Persistent Memory Region has become > read-only or unreliable". Given that Linux does not support the PMR, do we really need this?