I have some additional information on this problem: the memory mapped region almost seems to work:
if I write to the region from the kernel, the user task can see the written values but if I write to the region from the user task, the user task can read back the written values but the kernel can't it's almost as if the region needs to be flushed back out to the underlying file Jim Tsillas Andover Engineering Enterasys Networks 978-684-1633 ----------------------------- A preposition is a terrible thing to end a sentence with. -----Original Message----- From: Jeff Dike [mailto:[EMAIL PROTECTED] Sent: Saturday, March 19, 2005 3:16 PM To: Tsillas, Demetrios J Cc: user-mode-linux-devel@lists.sourceforge.net Subject: Re: [uml-devel] remap_page_range [EMAIL PROTECTED] said: > The kernel tries to read the value using the virtual address (offset > from 0x271f0000) and gets back zeros. I've also tried look at the phys > addr (offset from 0x1f1f0000) and that too is zeros. Have a look at the process /proc/<pid>/maps on the host to see what it has mapped in at 0x404e9000. The offset column is the offset into the VM file, which is the physical address mapped in to that virtual address. Jeff ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
