Hi, I am fighting with a little problem here. I have reserved a chunk of physical memory for my personnal use and out of the kernel scope (linux mem=1024M). I have now to handle this reserved memory by myself with a simple scheme (I need BIG contiguous memory chunks (over 64Megs, and only few of them). My idea was to create a driver for that memory & mmap() in it. So far so good, I can mmap() from user side, driver works fine as far as remap_page_range() is concerned. Now comes the freeing/unmapping of those regions. I have implemented my personnal vm_operations_struct to take care of house keeping.... BUT the close(struct vm_area_struct *vma) only gives me back a virtual address, and a call to virt_to_phys(vma->start) doesn't point back to the physical address I gave when mmaping. As I have multiple processes, I cannot associate (virt addr, phys addr) [2 processes could have the same virt addr pointing to 2 different physical areas]. I am wondering if there is something totally obvious I am missing there in the process (i.e., is there unmap_page_range taking the virtual address as input... ;) ) Thanks in advance... Christophe Beaumont Sr Software Engineer Phone: 626-744-2078 Paracel, Inc. Fax: 626-744-2001 1055 East Colorado Blvd, email: [EMAIL PROTECTED] Pasadena, CA 91106-2341 www: www.paracel.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
