fn read_config(&self, offset: u64, _data: &mut [u8]) -> Result<()> {
        bail!(
            "Reading device config space for rng is not supported, offset: {}",
            offset
        );
    }
/// Read data of config from guest.
Read data of config from guest.
Read data of config from guest .
fn read_config(&self, offset: u64, _data: &mut [u8]) -> Result<()> {
        bail!(
            "Reading device config space for rng is not supported, offset: {}",
            offset
        );
    }
fn read_config ( & self , offset : u64 , _data : & mut [ u8 ] ) -> Result < ( ) > { bail ! ( " " offset ) ; }
Read data of config from guest.
Read data of config from guest .
&self
offset
u64
_data
&mut [u8]
&self
offset
u64
_data
&mut [u8]