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 42380C30653 for ; Wed, 3 Jul 2024 10:53:03 +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=OP6M/6puZZYAtzxWxYhbePS6Z+ry0FzEZ2Qz5InwK/8=; b=cVAbZq0niyLwpRIiKm8cLTvQ2f 8yYE6yOBLziODNZk0WQFEEdCpD7WcRYXxSrKpuepDSL4tQSURPi87MdBJnG3CT+ixYND7dj3VLANL /iGE26bhR/xa8e+IB7h5pYp/vKD4+cCXJJCe1MGa0AVd1IzjJ+SENDE3SI1Lhr+xTtTXB3qqAQAmj pp1/fkvjVFDu0oGGRzg0Ek21t5L7rJ2cgARrnqX5tDNMhdKdGp+4MczVBfLJ4s8Q1N1Qyl+qHGw0N 0bXlAN3rkkujWDwTfO4f0xVEfGyVFR+GtF/aRseop8TXPCVhIOtFmMYntovr8DF8rSlBTraPnjxUJ T4dVlhFA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOxbi-00000009t8y-15rS; Wed, 03 Jul 2024 10:53:02 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOxbf-00000009t7L-3hGl for linux-nvme@lists.infradead.org; Wed, 03 Jul 2024 10:53:01 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 9D9F8621CD; Wed, 3 Jul 2024 10:52:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 836CAC4AF0B; Wed, 3 Jul 2024 10:52:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720003978; bh=pPz+aKLXZOghQ7VtjQHusi+fj+NpFq4VHkcVX8X3bH8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nYd4RQLPNWY78pIbNAILafDzME2V0q1JxD04RIMzYEVRTvt89jlLKvJriZcMCuH2T w96uRRv/Q4LrMA7qbS+tVVzGZ8TbYD4a7uxMEPOOXtyhfAZjqiLtWvl7qwC+YZD5Ba v6Hluy8LaijXySSMoswEpGvrCLN3gkwpFP2bG31B2uIuuhMWFdHvJ6hmi9njK5bywp geNwo4OuHZBuA495qG+lQBMrzBgxPLYgn8KinCmvDBq9hmAZenc9g0C6DeVOsibSX2 IVVgir3Al85xqpIrwp6ua76xZvzC0FWDuHMKCBDh5k2QhOV31v4/Nqa/LhITpDNtHG 1wsaj+G6o4oiw== Date: Wed, 3 Jul 2024 13:52:53 +0300 From: Leon Romanovsky To: Christoph Hellwig Cc: Jens Axboe , Jason Gunthorpe , Robin Murphy , Joerg Roedel , Will Deacon , Keith Busch , "Zeng, Oak" , Chaitanya Kulkarni , Sagi Grimberg , Bjorn Helgaas , Logan Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Marek Szyprowski , =?iso-8859-1?B?Suly9G1l?= Glisse , Andrew Morton , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC PATCH v1 00/18] Provide a new two step DMA API mapping API Message-ID: <20240703105253.GA95824@unreal> References: <20240703054238.GA25366@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240703054238.GA25366@lst.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240703_035300_007317_18C2F458 X-CRM114-Status: GOOD ( 12.79 ) 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, Jul 03, 2024 at 07:42:38AM +0200, Christoph Hellwig wrote: > I just tried to boot this on my usual qemu test setup with emulated > nvme devices, and it dead-loops with messages like this fairly late > in the boot cycle: > > [ 43.826627] iommu: unaligned: iova 0xfff7e000 pa 0x000000010be33650 size 0x1000 min_pagesz 0x1000 > [ 43.826982] dma_mapping_error -12 > > passing intel_iommu=off instead of intel_iommu=on (expectedly) makes > it go away. Can you please share your kernel command line and qemu? On my and Chaitanya setups it works fine. Thanks