From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-174.mta1.migadu.com (out-174.mta1.migadu.com [95.215.58.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC57D17D8BB for ; Wed, 3 Jul 2024 10:42:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720003379; cv=none; b=K3GfNR9JV+DDYGsnuzu5za6u+HZyWQHXVyqBr7XNqhPjtNmlpM8jQotNAy/KZNFOsQJ4V2VzsxEYf8Dt/ui0b8YuQwSsa6ClEmGyRK4nvi3suDg1WkBV/nTNc1TOoW6/zOSk6IHcnWF2hG5aPtl5qp7nBvGzAsmuqlTISFT/Gck= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720003379; c=relaxed/simple; bh=5x7iVFmmOCeg7gmKXakTIO88Klmb/Ljrt+SWcudmyj8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Ya0a095iXeRKEjyjAMUu+IjJQdnqzfxqh0x7hhM7OnMHo2TMVn+0q9sYT8SWAVtEfKyrRmz+HK6EzRlIuJhh575q9Bl4jUf7Oi4txbB9Z1Hw04IIfb0y+eOfmD+J/DLHCQaAaZbHtRWgHgSbQBDH1qCnqe2r78wlrfB8p2yDc3k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=UGo3+dYa; arc=none smtp.client-ip=95.215.58.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="UGo3+dYa" X-Envelope-To: hch@lst.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1720003375; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VQ0x5M8745iJdoh6tHN0tzYonslhz7xwJWvLxeue+x0=; b=UGo3+dYatV3+LHOqZstdITsJeOnkGNrjjKudxHxps7f66nrP6L2jPec8eQh+kgocd01E++ 5ZH9rxoshew0yf6Kc3Deyv+ijw/nOCWKOnj/sPJHL/iD1p19uxG1dh3GI+QQiruFD8TsYh lVwQS8zKiifLTR0s/1tHh0utloLHppM= X-Envelope-To: leon@kernel.org X-Envelope-To: axboe@kernel.dk X-Envelope-To: jgg@ziepe.ca X-Envelope-To: robin.murphy@arm.com X-Envelope-To: joro@8bytes.org X-Envelope-To: will@kernel.org X-Envelope-To: kbusch@kernel.org X-Envelope-To: oak.zeng@intel.com X-Envelope-To: kch@nvidia.com X-Envelope-To: sagi@grimberg.me X-Envelope-To: bhelgaas@google.com X-Envelope-To: logang@deltatee.com X-Envelope-To: yishaih@nvidia.com X-Envelope-To: shameerali.kolothum.thodi@huawei.com X-Envelope-To: kevin.tian@intel.com X-Envelope-To: alex.williamson@redhat.com X-Envelope-To: m.szyprowski@samsung.com X-Envelope-To: jglisse@redhat.com X-Envelope-To: akpm@linux-foundation.org X-Envelope-To: linux-block@vger.kernel.org X-Envelope-To: linux-kernel@vger.kernel.org X-Envelope-To: linux-rdma@vger.kernel.org X-Envelope-To: iommu@lists.linux.dev X-Envelope-To: linux-nvme@lists.infradead.org X-Envelope-To: linux-pci@vger.kernel.org X-Envelope-To: kvm@vger.kernel.org X-Envelope-To: linux-mm@kvack.org Message-ID: Date: Wed, 3 Jul 2024 18:42:42 +0800 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [RFC PATCH v1 00/18] Provide a new two step DMA API mapping API To: Christoph Hellwig , Leon Romanovsky 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 , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , 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 References: <20240703054238.GA25366@lst.de> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zhu Yanjun In-Reply-To: <20240703054238.GA25366@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 在 2024/7/3 13:42, Christoph Hellwig 写道: > 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 I also confronted this problem.IMO, if intel_iommu=off, the driver of drivers/iommu can not be used. If I remember correctly, some guys in the first version can fix this problem. I will check the mails. To me, I just revert this commit because I do not use this commit about nvme. Zhu Yanjun > it go away. >