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 10F66C19F32 for ; Wed, 5 Mar 2025 15:18:10 +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=gsblZq4Vy1D5xhsmIckbMgxJiA3763x8Y9bms9Mn7QU=; b=2lQxMm3nau+ZzxynuyJ8s8L5nu U5G55MePTQz6GWz1K/IWvl82ev22kQaB1rFAQc7thLvLq3upVLfrwCzcPIrdTAPJK5vrn5hh6sDoZ L24woc20bXnxyngxfjfcYHbZiYaeks6ae6TqBJXylnqVpBgoEx8UXNBUjCfY+ntUIiJVo/RXjdSbR TX7tabVJG5mtd5C7ZaO6T89Alry8oOLJoc+h6qyyVFHakL9E3QefuT4KSu3uYmI54jmJh7+/3tLUY y9X+QdhnINItcRPCfncCXYWR6frhhD6gf+eAPI/fkDdaFnlDd6FlP5h3ta4SSMxwSbnhXbgiaxaWR 5cDmaZIA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tpqVb-00000008V4i-3rnB; Wed, 05 Mar 2025 15:18:07 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tpqVZ-00000008V4C-0Hhh for linux-nvme@lists.infradead.org; Wed, 05 Mar 2025 15:18:06 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 927745C5C20; Wed, 5 Mar 2025 15:15:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5474FC4CED1; Wed, 5 Mar 2025 15:18:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741187882; bh=4/XUH4d6qHByGlAYL7Gr+YXKagxCHVRhwdzC2f31ZOA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Nl73jgPhaTVbXFF+Cs/OL3fP5WkoaXbJnkKhHT1HzgT8uZk5UPXw4o+Im78AtGGDJ Px7Jc5A4uaG7Zl2iCzQufMeMhuuKYsWAP1d0euB7b/JNV9RqZZuNlh6Am5fnsNlE0H 6dvl/rAe2U8UwfTiXqWJTNuX8LF8+vvlw/NFKnSSfDTvbJfdMcq9z68iLxRmGC+L1f P43xWh+eNdUF9nxofS6ZRejz4Y8JFHRjNW2Iy/gsX0PUKjbGjVPPuBKoKlkFXS1t4o eKodc7Y7es0UkWalQR6lijVH75ldm014ztpzev4pBB2IoFeMBSfP9tgV9avVrVeE/i ATHAmOyB72t1A== Date: Wed, 5 Mar 2025 08:17:59 -0700 From: Keith Busch To: Christoph Hellwig Cc: Hannes Reinecke , Sagi Grimberg , Nilay Shroff , John Meneghini , bmarzins@redhat.com, Bryan Gurney , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Marco Patalano , axboe@kernel.dk Subject: Re: [PATCH] nvme: remove multipath module parameter Message-ID: References: <20250204211158.43126-1-bgurney@redhat.com> <7c588344-f019-4939-8a93-0a450481d4bc@redhat.com> <8a1730a1-1faf-4722-99e1-c3a85257b6f4@redhat.com> <2ff87386-c6db-4f2e-be91-213504d99a78@linux.ibm.com> <0656b66c-dd9c-495d-b1fc-4f09e763fa66@grimberg.me> <91ae613a-7b56-4ca0-b91c-6bc1eee798b8@suse.de> <20250305141554.GA18065@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250305141554.GA18065@lst.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250305_071805_148920_836EDA34 X-CRM114-Status: GOOD ( 11.34 ) 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 Wed, Mar 05, 2025 at 03:15:54PM +0100, Christoph Hellwig wrote: > On Wed, Feb 26, 2025 at 10:55:21AM +0100, Hannes Reinecke wrote: > > Plus there are some NVMe devices out there which _despite_ being PCIe do > > report NMIC and CMIC set (I won't name names, if you came across them > > you'll know) > > ????? > > NMIC and CMIC is perfectly normal and expected for multiported PCIe. > WTF are you talking about? Obviously he's not talking about multiported PCIe. And he's right, the behavior of a PCIe hot plug is very different and often undesirable when it's under native multipath.