Have you used __pa() and __va() fucntions?? Important point to be taken care is . Allocating contiguous memory(pci_alloc_consistent is very much advisable) reserve the vm area, which your going to use it. Iqbal. On Tue, 2003-01-21 at 04:54, John Navil Joseph wrote: > Hi, > > I am trying to create a new virtual memory area for a process (struct vm_area_struct) > that is not mapped to a file (ie, vma->vm_file = NULL). > > I already managed to create a VMA by mapping a file using the do_mmap() function similiar to what is > done in SYSV IPC shared memory implementation. > > But i dont want to create a VMA by memory mapping a file. > > I want to allocate physical pages by using alloc_pages() and associating those pages with the > the VMA that I created. > > i know how to create a VMA and add it to the process address space, i also know how to allocate physical pages. > > but not sure of how to setup the physical-virtual page mappings.. > > could anyone tell me what i am missing here and kernel functions for doing the same. > > john > > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
