> Jianxiong Gao, before spending more time on this, could you also try > Chanho Park's patch? > https://lore.kernel.org/linux-iommu/20210510091816.GA2084@xxxxxx/T/#m0d0df6490350a08dcc24c9086c8edc165b402d6f > I have tested Chanho Parks's patch and it works for us. The NVMe driver performs correctly with the patch. I have teste the patch on 06af8679449d -- Jianxiong Gao
