Sorry, pressing "send" button to send. Imagine if data copied span between those pages, then data on the second page will be left out because DMA operation thinks in physical address while the second page might not be physically adjacent. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ