On Tue 08-12-15 18:25:31, Sebastian Frias wrote: > Hi, > > We are porting a driver from Linux 3.4.39+ to 4.1.13+, CPU is Cortex-A9. > > The driver maps kmalloc'ed memory to user space. This sounds like a terrible idea to me. Why don't you simply use the page allocator directly? Try to imagine what would happen if you mmaped a kmalloc with a size which is not page aligned? mmaped memory uses whole page granularity. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>