Hi Pankaj, On 2019/12/15 23:12, Pankaj Bansal wrote: > As per http://infocenter.arm.com/help/topic/com.arm.doc.den0049d/DEN0049D_IO_Remapping_Table.pdf > in ID mappings: > Number of IDs = The number of IDs in the range minus one. Hmm, the spec is confusing, the spec may need to be updated, for example, for a PCI bus, device ID + function ID will take 8 bits and will be 256 IDs for that PCI bus, not sure why we need to minus one. > > Therefore, it's valid for ID mapping to contain single device mapping which > would have Number of IDs field 0. Why not use single mapping flag for this case? Thanks Hanjun
