nvme_is_64bit_reg - Man Page

bool nvme_is_64bit_reg (__u32 offset );

offset

Offset of controller register field in bytes

This function does not care about transport so that the offset is not going to be checked inside of this function for the unsupported fields in a specific transport. For example, BPMBL(Boot Partition Memory Buffer Location) register is not supported by fabrics, but it can be checked here.

true if given offset is 64bit register, otherwise it returns false.