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=-5.8 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 C9641C433E0 for ; Wed, 10 Feb 2021 07:38:15 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 475C064DF2 for ; Wed, 10 Feb 2021 07:38:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 475C064DF2 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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject: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=+Zz5QsRwBSTD+3oXLecAmXssVaXxp48u8ZUS4MjuPwo=; b=sFmgDcts7AqAeFQ0q0az/9JJ9 ipHMv8Vq5ygJML7G/d3H4RLV7Fd9t8zDGuKhzOaiosdwiLzEYAs4uW+L5rwR3qwCTZtzYsL5vOWW5 S9oiep8iMVCiUZfAAPZCMVDrl32YL5+g/Vy1RHTGNdjhFrS6Se+sF3S+hT011Pa/PqpQHmg5BdhAy e3Z4f3dSof7No+KZFXZpnkECdM5O4tlfp6hSCDmX3KiVh7t7MmNEqwpE99Q0ToPVyj01qAFUd6uMc lwgivbG4mfq+5DRax4q9gPX+bX8glmPTnVJka+z+s7UQod1DyYaEuqtV6R82/UiRpgzXLrPF94knB QdnLnnQLg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l9k4d-0007B3-Qu; Wed, 10 Feb 2021 07:38:07 +0000 Received: from verein.lst.de ([213.95.11.211]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l9k4Y-0007Ah-Nd for linux-nvme@lists.infradead.org; Wed, 10 Feb 2021 07:38:03 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id EACAD67373; Wed, 10 Feb 2021 08:37:59 +0100 (CET) Date: Wed, 10 Feb 2021 08:37:59 +0100 From: Christoph Hellwig To: Filippo Sironi Subject: Re: [PATCH v2] nvme: Add 48-bit DMA address quirk for Amazon NVMe controllers Message-ID: <20210210073759.GA23269@lst.de> References: <20210203094338.19473-1-sironi@amazon.de> <20210210003942.25700-1-sironi@amazon.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210210003942.25700-1-sironi@amazon.de> 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-20210210_023802_900683_BBD7F4E3 X-CRM114-Status: GOOD ( 10.63 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: benh@amazon.com, sagi@grimberg.me, serebrin@amazon.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, axboe@fb.com, kbusch@kernel.org, hch@lst.de, dwmw@amazon.co.uk 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 Wed, Feb 10, 2021 at 01:39:42AM +0100, Filippo Sironi wrote: > Amazon NVMe controllers do not support 64-bit DMA addresses; they are > limited to 48-bit DMA addresses. Let's add a quirk to ensure that we > make use of 48-bit DMA addresses to avoid misbehavior. This should probably say some, and mention that they do not follow the spec. But I can fix this up when applying the patch. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme