> > Can you give me a pointer in the kernel sources? I > > think buddy allcator is responsible for it. i.e. > is it > > done at mm initialization phase or not? > > The virtual address coresponding to a physical > address for the kernel > module is always the same ..... that doesn't depends > on the contexts > ...... I think the __va and __pa are well self > explainatory > or I m not > getting what you can't understand or want to know > ..... if you call kmalloc, it gives you a virtual addr. That address is constructed by adding PAGE_OFFSET to the founded phys addr. and kmalloc returns this addr to the caller. I looked at kmalloc func. and didnt see this "adding stuff". Perhaps there is a different mechanism instead of adding. I dont know. I am wondering only this adding stuff. Mark __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
