On Tue, Jun 27, 2006 at 12:52:03PM -0600, Jim Cromie wrote: > > its been mentioned repeatedly on LKML, > where they all know, and dont need it spelled out. > > Assuming I understand the answer, Ill add it to glossary. Message Signaled Interrupts. It's a mode of PCI that turns "interrupts" into a virtual thing that is delivered to the driver and is not assigned to a physical pin in the processor. It allows drivers to request lots of them, for different things on their devices, so there is not a single large interrupt handler. I'm sure there's a better description of it on Wikipedia somewhere... Ah yeah: http://en.wikipedia.org/wiki/Message_Signaled_Interrupts Hope this helps, greg k-h -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/