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Thanks, Fan On 11/11/2025 5:01 PM, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=220776 > > chenyi.qiang@intel.com changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |chenyi.qiang@intel.com > > --- Comment #1 from chenyi.qiang@intel.com --- > After some bisect, it is found that this issue is introduced by the support of > dma_map_file in iommufd [1][2]. With hugetlbfs as backend, it will go to the > path of IOMMU_IOAS_MAP_FILE ioctl. If we fallback to the IOMMU_IOAS_MAP ioctl, > there's no such problem. > > [1] > https://lore.kernel.org/qemu-devel/1751493538-202042-9-git-send-email-steven.sistare@oracle.com/ > [2] > https://lore.kernel.org/all/1729861919-234514-1-git-send-email-steven.sistare@oracle.com/ >