Hi all, I've got two questions: 1) What does it mean when the kernel is in state "atomic", i.e. in_atomic()==1? How does it happen and what is allowed and what is not there? 2) Can I say about a given virtual address whether or not it is usable for DMA? My function is called from different places and I want to know if the pointer in its parameter can be used for DMA or if I should copy the data to GFP_DMA-allocated space first. Thanks in advance! Michal Ludvig -- * A mouse is a device used to point at the xterm you want to type in. * Personal homepage - http://www.logix.cz/michal -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
