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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 X-Rspamd-Queue-Id: 02F1F1A0008 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 1tp3abh5z1twn4gkx4aw8or7gwrowkgq X-HE-Tag: 1720003377-241314 X-HE-Meta: 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 hCy4NL72 Q6CReuS2r+G6nct3rnMveszK5097TDDBbQwtUe6A0sxK0WHpbN0APangZe6rFx+ZDW1wgpN30WCzj816+HAb5InfiN1QBn5nDXqQbldyOmGO7eycZKrKl8xVKO+g+rZIR8/NDHZR+WgddhjaLGg8TOSvfhA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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. >